Tag zfs-2.1.12

META file and changelog updated.

Signed-off-by: Tony Hutter <hutter2@llnl.gov>

.github/workflows/build-dependencies.txt

@@ -0,0 +1,57 @@
+acl
+alien
+attr
+autoconf
+bc
+build-essential
+curl
+dbench
+debhelper-compat
+dh-python
+dkms
+fakeroot
+fio
+gdb
+gdebi
+git
+ksh
+lcov
+libacl1-dev
+libaio-dev
+libattr1-dev
+libblkid-dev
+libcurl4-openssl-dev
+libdevmapper-dev
+libelf-dev
+libffi-dev
+libmount-dev
+libpam0g-dev
+libselinux1-dev
+libssl-dev
+libtool
+libudev-dev
+linux-headers-generic
+lsscsi
+mdadm
+nfs-kernel-server
+pamtester
+parted
+po-debconf
+python3
+python3-all-dev
+python3-cffi
+python3-dev
+python3-packaging
+python3-pip
+python3-setuptools
+python3-sphinx
+rng-tools-debian
+rsync
+samba
+sysstat
+uuid-dev
+watchdog
+wget
+xfslibs-dev
+xz-utils
+zlib1g-dev

.github/workflows/checkstyle-dependencies.txt

@@ -0,0 +1,2 @@
+pax-utils
+shellcheck

.github/workflows/checkstyle.yaml

@@ -6,20 +6,27 @@ on:
 
 jobs:
   checkstyle:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     steps:
     - uses: actions/checkout@v3
       with:
         ref: ${{ github.event.pull_request.head.sha }}
     - name: Install dependencies
       run: |
-        sudo apt-get update
+        # https://github.com/orgs/community/discussions/47863
-        sudo apt-get install --yes -qq build-essential autoconf libtool gawk alien fakeroot linux-headers-$(uname -r)
+        sudo apt-mark hold grub-efi-amd64-signed
-        sudo apt-get install --yes -qq zlib1g-dev uuid-dev libattr1-dev libblkid-dev libselinux-dev libudev-dev libssl-dev python-dev python-setuptools python-cffi python3 python3-dev python3-setuptools python3-cffi
+        sudo apt-get update --fix-missing
-        # packages for tests
+        sudo apt-get upgrade
-        sudo apt-get install --yes -qq parted lsscsi ksh attr acl nfs-kernel-server fio
+        sudo xargs --arg-file=${{ github.workspace }}/.github/workflows/build-dependencies.txt apt-get install -qq
-        sudo apt-get install --yes -qq mandoc cppcheck pax-utils devscripts
+        sudo xargs --arg-file=${{ github.workspace }}/.github/workflows/checkstyle-dependencies.txt apt-get install -qq
-        sudo -E pip --quiet install flake8
+        sudo python3 -m pip install --quiet flake8
+        sudo apt-get clean
+
+        # confirm that the tools are installed
+        # the build system doesn't fail when they are not
+        flake8 --version
+        scanelf --version
+        shellcheck --version
     - name: Prepare
       run: |
         sh ./autogen.sh

.github/workflows/scripts/reclaim_disk_space.sh

@@ -0,0 +1,23 @@
+#!/bin/sh
+
+set -eu
+
+# remove 4GiB of images
+sudo systemd-run docker system prune --force --all --volumes
+
+# remove unused software
+sudo systemd-run --wait rm -rf \
+  "$AGENT_TOOLSDIRECTORY" \
+  /opt/* \
+  /usr/local/* \
+  /usr/share/az* \
+  /usr/share/dotnet \
+  /usr/share/gradle* \
+  /usr/share/miniconda \
+  /usr/share/swift \
+  /var/lib/gems \
+  /var/lib/mysql \
+  /var/lib/snapd
+
+# trim the cleaned space
+sudo fstrim /

.github/workflows/zfs-tests-functional.yml

@@ -9,7 +9,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [20.04]
+        os: [20.04, 22.04]
     runs-on: ubuntu-${{ matrix.os }}
     steps:
     - uses: actions/checkout@v3
@@ -17,17 +17,12 @@ jobs:
         ref: ${{ github.event.pull_request.head.sha }}
     - name: Install dependencies
       run: |
-        sudo apt-get update
+        # https://github.com/orgs/community/discussions/47863
-        sudo apt-get install --yes -qq build-essential autoconf libtool gdb lcov \
+        sudo apt-mark hold grub-efi-amd64-signed
-          git alien fakeroot wget curl bc fio acl \
+        sudo apt-get update --fix-missing
-          sysstat mdadm lsscsi parted gdebi attr dbench watchdog ksh \
+        sudo apt-get upgrade
-          nfs-kernel-server samba rng-tools xz-utils \
+        sudo xargs --arg-file=${{ github.workspace }}/.github/workflows/build-dependencies.txt apt-get install -qq
-          zlib1g-dev uuid-dev libblkid-dev libselinux-dev \
+        sudo apt-get clean
-          xfslibs-dev libattr1-dev libacl1-dev libudev-dev libdevmapper-dev \
-          libssl-dev libffi-dev libaio-dev libelf-dev libmount-dev \
-          libpam0g-dev pamtester python-dev python-setuptools python-cffi \
-          python3 python3-dev python3-setuptools python3-cffi python3-packaging \
-          libcurl4-openssl-dev
     - name: Autogen.sh
       run: |
         sh autogen.sh
@@ -56,12 +51,13 @@ jobs:
             sudo udevadm control --reload-rules
           fi
         fi
-        # Workaround to provide additional free space for testing.
+    - name: Clear the kernel ring buffer
-        #   https://github.com/actions/virtual-environments/issues/2840
+      run: |
-        sudo rm -rf /usr/share/dotnet
+        sudo dmesg -c >/var/tmp/dmesg-prerun
-        sudo rm -rf /opt/ghc
+    - name: Reclaim and report disk space
-        sudo rm -rf "/usr/local/share/boost"
+      run: |
-        sudo rm -rf "$AGENT_TOOLSDIRECTORY"
+        ${{ github.workspace }}/.github/workflows/scripts/reclaim_disk_space.sh
+        df -h /
     - name: Tests
       run: |
         /usr/share/zfs/zfs-tests.sh -vR -s 3G
@@ -71,7 +67,7 @@ jobs:
       run: |
         RESULTS_PATH=$(readlink -f /var/tmp/test_results/current)
         sudo dmesg > $RESULTS_PATH/dmesg
-        sudo cp /var/log/syslog $RESULTS_PATH/
+        sudo cp /var/log/syslog /var/tmp/dmesg-prerun $RESULTS_PATH/
         sudo chmod +r $RESULTS_PATH/*
         # Replace ':' in dir names, actions/upload-artifact doesn't support it
         for f in $(find /var/tmp/test_results -name '*:*'); do mv "$f" "${f//:/__}"; done
@@ -79,5 +75,7 @@ jobs:
       if: failure()
       with:
         name: Test logs Ubuntu-${{ matrix.os }}
-        path: /var/tmp/test_results/20*/
+        path: |
+          /var/tmp/test_results/*
+          !/var/tmp/test_results/current
         if-no-files-found: ignore

.github/workflows/zfs-tests-sanity.yml

@@ -6,24 +6,19 @@ on:
 
 jobs:
   tests:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     steps:
     - uses: actions/checkout@v3
       with:
         ref: ${{ github.event.pull_request.head.sha }}
     - name: Install dependencies
       run: |
-        sudo apt-get update
+        # https://github.com/orgs/community/discussions/47863
-        sudo apt-get install --yes -qq build-essential autoconf libtool gdb lcov \
+        sudo apt-mark hold grub-efi-amd64-signed
-          git alien fakeroot wget curl bc fio acl \
+        sudo apt-get update --fix-missing
-          sysstat mdadm lsscsi parted gdebi attr dbench watchdog ksh \
+        sudo apt-get upgrade
-          nfs-kernel-server samba rng-tools xz-utils \
+        sudo xargs --arg-file=${{ github.workspace }}/.github/workflows/build-dependencies.txt apt-get install -qq
-          zlib1g-dev uuid-dev libblkid-dev libselinux-dev \
+        sudo apt-get clean
-          xfslibs-dev libattr1-dev libacl1-dev libudev-dev libdevmapper-dev \
-          libssl-dev libffi-dev libaio-dev libelf-dev libmount-dev \
-          libpam0g-dev pamtester python-dev python-setuptools python-cffi \
-          python3 python3-dev python3-setuptools python3-cffi python3-packaging \
-          libcurl4-openssl-dev
     - name: Autogen.sh
       run: |
         sh autogen.sh
@@ -52,12 +47,13 @@ jobs:
             sudo udevadm control --reload-rules
           fi
         fi
-        # Workaround to provide additional free space for testing.
+    - name: Clear the kernel ring buffer
-        #   https://github.com/actions/virtual-environments/issues/2840
+      run: |
-        sudo rm -rf /usr/share/dotnet
+        sudo dmesg -c >/var/tmp/dmesg-prerun
-        sudo rm -rf /opt/ghc
+    - name: Reclaim and report disk space
-        sudo rm -rf "/usr/local/share/boost"
+      run: |
-        sudo rm -rf "$AGENT_TOOLSDIRECTORY"
+        ${{ github.workspace }}/.github/workflows/scripts/reclaim_disk_space.sh
+        df -h /
     - name: Tests
       run: |
         /usr/share/zfs/zfs-tests.sh -vR -s 3G -r sanity
@@ -67,13 +63,15 @@ jobs:
       run: |
         RESULTS_PATH=$(readlink -f /var/tmp/test_results/current)
         sudo dmesg > $RESULTS_PATH/dmesg
-        sudo cp /var/log/syslog $RESULTS_PATH/
+        sudo cp /var/log/syslog /var/tmp/dmesg-prerun $RESULTS_PATH/
         sudo chmod +r $RESULTS_PATH/*
         # Replace ':' in dir names, actions/upload-artifact doesn't support it
         for f in $(find /var/tmp/test_results -name '*:*'); do mv "$f" "${f//:/__}"; done
     - uses: actions/upload-artifact@v3
       if: failure()
       with:
-        name: Test logs
+        name: Test logs Ubuntu-${{ matrix.os }}
-        path: /var/tmp/test_results/20*/
+        path: |
+          /var/tmp/test_results/*
+          !/var/tmp/test_results/current
         if-no-files-found: ignore

.github/workflows/zloop.yml

@@ -6,7 +6,7 @@ on:
 
 jobs:
   tests:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     env:
       TEST_DIR: /var/tmp/zloop
     steps:
@@ -15,15 +15,12 @@ jobs:
         ref: ${{ github.event.pull_request.head.sha }}
     - name: Install dependencies
       run: |
-        sudo apt-get update
+        # https://github.com/orgs/community/discussions/47863
-        sudo apt-get install --yes -qq build-essential autoconf libtool gdb \
+        sudo apt-mark hold grub-efi-amd64-signed
-          git alien fakeroot \
+        sudo apt-get update --fix-missing
-          zlib1g-dev uuid-dev libblkid-dev libselinux-dev \
+        sudo apt-get upgrade
-          xfslibs-dev libattr1-dev libacl1-dev libudev-dev libdevmapper-dev \
+        sudo xargs --arg-file=${{ github.workspace }}/.github/workflows/build-dependencies.txt apt-get install -qq
-          libssl-dev libffi-dev libaio-dev libelf-dev libmount-dev \
+        sudo apt-get clean
-          libpam0g-dev \
-          python-dev python-setuptools python-cffi python-packaging \
-          python3 python3-dev python3-setuptools python3-cffi python3-packaging
     - name: Autogen.sh
       run: |
         sh autogen.sh
@@ -44,8 +41,9 @@ jobs:
     - name: Tests
       run: |
         sudo mkdir -p $TEST_DIR
-        # run for 20 minutes to have a total runner time of 30 minutes
+        # run for 10 minutes or at most 2 iterations for a maximum runner
-        sudo /usr/share/zfs/zloop.sh -t 1200 -l -m1 -- -T 120 -P 60
+        #   time of 20 minutes.
+        sudo /usr/share/zfs/zloop.sh -t 600 -I 2 -l -m1 -- -T 120 -P 60
     - name: Prepare artifacts
       if: failure()
       run: |

META

@@ -1,10 +1,10 @@
 Meta:          1
 Name:          zfs
 Branch:        1.0
-Version:       2.1.9
+Version:       2.1.12
 Release:       1
 Release-Tags:  relext
 License:       CDDL
 Author:        OpenZFS
-Linux-Maximum: 6.1
+Linux-Maximum: 6.3
 Linux-Minimum: 3.10

cmd/arc_summary/Makefile.am

@@ -1,13 +1,8 @@
 bin_SCRIPTS = arc_summary
 
 CLEANFILES = arc_summary
-EXTRA_DIST = arc_summary2 arc_summary3
+EXTRA_DIST = arc_summary3
-
-if USING_PYTHON_2
-SCRIPT = arc_summary2
-else
 SCRIPT = arc_summary3
-endif
 
 arc_summary: $(SCRIPT)
 	cp $< $@

cmd/arc_summary/arc_summary3

@@ -191,21 +191,13 @@ elif sys.platform.startswith('linux'):
         # there, so we fall back on modinfo
         command = ["/sbin/modinfo", request, "-0"]
 
-        # The recommended way to do this is with subprocess.run(). However,
-        # some installed versions of Python are < 3.5, so we offer them
-        # the option of doing it the old way (for now)
         info = ''
 
         try:
 
-            if 'run' in dir(subprocess):
+            info = subprocess.run(command, stdout=subprocess.PIPE,
-                info = subprocess.run(command, stdout=subprocess.PIPE,
+                                  check=True, universal_newlines=True)
-                                      universal_newlines=True)
+            raw_output = info.stdout.split('\0')
-                raw_output = info.stdout.split('\0')
-            else:
-                info = subprocess.check_output(command,
-                                               universal_newlines=True)
-                raw_output = info.split('\0')
 
         except subprocess.CalledProcessError:
             print("Error: Descriptions not available",

cmd/arcstat/arcstat.in

@@ -47,7 +47,7 @@
 # @hdr is the array of fields that needs to be printed, so we
 # just iterate over this array and print the values using our pretty printer.
 #
-# This script must remain compatible with Python 2.6+ and Python 3.4+.
+# This script must remain compatible with Python 3.6+.
 #
 
 import sys

cmd/dbufstat/dbufstat.in

@@ -27,7 +27,7 @@
 # Copyright (C) 2013 Lawrence Livermore National Security, LLC.
 # Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
 #
-# This script must remain compatible with Python 2.6+ and Python 3.4+.
+# This script must remain compatible with and Python 3.6+.
 #
 
 import sys

cmd/zdb/zdb.c

@@ -3102,13 +3102,22 @@ dump_znode_sa_xattr(sa_handle_t *hdl)
 	(void) printf("\tSA xattrs: %d bytes, %d entries\n\n",
 	    sa_xattr_size, sa_xattr_entries);
 	while ((elem = nvlist_next_nvpair(sa_xattr, elem)) != NULL) {
+		boolean_t can_print = !dump_opt['P'];
 		uchar_t *value;
 		uint_t cnt, idx;
 
 		(void) printf("\t\t%s = ", nvpair_name(elem));
 		nvpair_value_byte_array(elem, &value, &cnt);
+
 		for (idx = 0; idx < cnt; ++idx) {
-			if (isprint(value[idx]))
+			if (!isprint(value[idx])) {
+				can_print = B_FALSE;
+				break;
+			}
+		}
+
+		for (idx = 0; idx < cnt; ++idx) {
+			if (can_print)
 				(void) putchar(value[idx]);
 			else
 				(void) printf("\\%3.3o", value[idx]);

cmd/zed/agents/zfs_agents.c

@@ -80,6 +80,7 @@ zfs_agent_iter_vdev(zpool_handle_t *zhp, nvlist_t *nvl, void *arg)
 	char *path = NULL;
 	uint_t c, children;
 	nvlist_t **child;
+	uint64_t vdev_guid;
 
 	/*
 	 * First iterate over any children.
@@ -100,7 +101,7 @@ zfs_agent_iter_vdev(zpool_handle_t *zhp, nvlist_t *nvl, void *arg)
 	    &child, &children) == 0) {
 		for (c = 0; c < children; c++) {
 			if (zfs_agent_iter_vdev(zhp, child[c], gsp)) {
-				gsp->gs_vdev_type = DEVICE_TYPE_L2ARC;
+				gsp->gs_vdev_type = DEVICE_TYPE_SPARE;
 				return (B_TRUE);
 			}
 		}
@@ -109,7 +110,7 @@ zfs_agent_iter_vdev(zpool_handle_t *zhp, nvlist_t *nvl, void *arg)
 	    &child, &children) == 0) {
 		for (c = 0; c < children; c++) {
 			if (zfs_agent_iter_vdev(zhp, child[c], gsp)) {
-				gsp->gs_vdev_type = DEVICE_TYPE_SPARE;
+				gsp->gs_vdev_type = DEVICE_TYPE_L2ARC;
 				return (B_TRUE);
 			}
 		}
@@ -126,6 +127,21 @@ zfs_agent_iter_vdev(zpool_handle_t *zhp, nvlist_t *nvl, void *arg)
 		    &gsp->gs_vdev_expandtime);
 		return (B_TRUE);
 	}
+	/*
+	 * Otherwise, on a vdev guid match, grab the devid and expansion
+	 * time. The devid might be missing on removal since its not part
+	 * of blkid cache and L2ARC VDEV does not contain pool guid in its
+	 * blkid, so this is a special case for L2ARC VDEV.
+	 */
+	else if (gsp->gs_vdev_guid != 0 && gsp->gs_devid == NULL &&
+	    nvlist_lookup_uint64(nvl, ZPOOL_CONFIG_GUID, &vdev_guid) == 0 &&
+	    gsp->gs_vdev_guid == vdev_guid) {
+		(void) nvlist_lookup_string(nvl, ZPOOL_CONFIG_DEVID,
+		    &gsp->gs_devid);
+		(void) nvlist_lookup_uint64(nvl, ZPOOL_CONFIG_EXPANSION_TIME,
+		    &gsp->gs_vdev_expandtime);
+		return (B_TRUE);
+	}
 
 	return (B_FALSE);
 }
@@ -148,13 +164,13 @@ zfs_agent_iter_pool(zpool_handle_t *zhp, void *arg)
 	/*
 	 * if a match was found then grab the pool guid
 	 */
-	if (gsp->gs_vdev_guid) {
+	if (gsp->gs_vdev_guid && gsp->gs_devid) {
 		(void) nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID,
 		    &gsp->gs_pool_guid);
 	}
 
 	zpool_close(zhp);
-	return (gsp->gs_vdev_guid != 0);
+	return (gsp->gs_devid != NULL && gsp->gs_vdev_guid != 0);
 }
 
 void
@@ -195,11 +211,13 @@ zfs_agent_post_event(const char *class, const char *subclass, nvlist_t *nvl)
 		uint64_t pool_guid = 0, vdev_guid = 0;
 		guid_search_t search = { 0 };
 		device_type_t devtype = DEVICE_TYPE_PRIMARY;
+		char *devid = NULL;
 
 		class = "resource.fs.zfs.removed";
 		subclass = "";
 
 		(void) nvlist_add_string(payload, FM_CLASS, class);
+		(void) nvlist_lookup_string(nvl, DEV_IDENTIFIER, &devid);
 		(void) nvlist_lookup_uint64(nvl, ZFS_EV_POOL_GUID, &pool_guid);
 		(void) nvlist_lookup_uint64(nvl, ZFS_EV_VDEV_GUID, &vdev_guid);
 
@@ -209,20 +227,24 @@ zfs_agent_post_event(const char *class, const char *subclass, nvlist_t *nvl)
 		(void) nvlist_add_int64_array(payload, FM_EREPORT_TIME, tod, 2);
 
 		/*
+		 * If devid is missing but vdev_guid is available, find devid
+		 * and pool_guid from vdev_guid.
 		 * For multipath, spare and l2arc devices ZFS_EV_VDEV_GUID or
 		 * ZFS_EV_POOL_GUID may be missing so find them.
 		 */
-		if (pool_guid == 0 || vdev_guid == 0) {
+		if (devid == NULL || pool_guid == 0 || vdev_guid == 0) {
-			if ((nvlist_lookup_string(nvl, DEV_IDENTIFIER,
+			if (devid == NULL)
-			    &search.gs_devid) == 0) &&
+				search.gs_vdev_guid = vdev_guid;
-			    (zpool_iter(g_zfs_hdl, zfs_agent_iter_pool, &search)
+			else
-			    == 1)) {
+				search.gs_devid = devid;
-				if (pool_guid == 0)
+			zpool_iter(g_zfs_hdl, zfs_agent_iter_pool, &search);
-					pool_guid = search.gs_pool_guid;
+			if (devid == NULL)
-				if (vdev_guid == 0)
+				devid = search.gs_devid;
-					vdev_guid = search.gs_vdev_guid;
+			if (pool_guid == 0)
-				devtype = search.gs_vdev_type;
+				pool_guid = search.gs_pool_guid;
-			}
+			if (vdev_guid == 0)
+				vdev_guid = search.gs_vdev_guid;
+			devtype = search.gs_vdev_type;
 		}
 
 		/*
@@ -235,7 +257,9 @@ zfs_agent_post_event(const char *class, const char *subclass, nvlist_t *nvl)
 		    search.gs_vdev_expandtime + 10 > tv.tv_sec) {
 			zed_log_msg(LOG_INFO, "agent post event: ignoring '%s' "
 			    "for recently expanded device '%s'", EC_DEV_REMOVE,
-			    search.gs_devid);
+			    devid);
+			fnvlist_free(payload);
+			free(event);
 			goto out;
 		}
 

cmd/zed/agents/zfs_mod.c

@@ -185,10 +185,12 @@ zfs_process_add(zpool_handle_t *zhp, nvlist_t *vdev, boolean_t labeled)
 	uint64_t wholedisk = 0ULL;
 	uint64_t offline = 0ULL, faulted = 0ULL;
 	uint64_t guid = 0ULL;
+	uint64_t is_spare = 0;
 	char *physpath = NULL, *new_devid = NULL, *enc_sysfs_path = NULL;
 	char rawpath[PATH_MAX], fullpath[PATH_MAX];
 	char devpath[PATH_MAX];
 	int ret;
+	int online_flag = ZFS_ONLINE_CHECKREMOVE | ZFS_ONLINE_UNSPARE;
 	boolean_t is_sd = B_FALSE;
 	boolean_t is_mpath_wholedisk = B_FALSE;
 	uint_t c;
@@ -214,6 +216,7 @@ zfs_process_add(zpool_handle_t *zhp, nvlist_t *vdev, boolean_t labeled)
 	(void) nvlist_lookup_uint64(vdev, ZPOOL_CONFIG_FAULTED, &faulted);
 
 	(void) nvlist_lookup_uint64(vdev, ZPOOL_CONFIG_GUID, &guid);
+	(void) nvlist_lookup_uint64(vdev, ZPOOL_CONFIG_IS_SPARE, &is_spare);
 
 	/*
 	 * Special case:
@@ -304,11 +307,13 @@ zfs_process_add(zpool_handle_t *zhp, nvlist_t *vdev, boolean_t labeled)
 		}
 	}
 
+	if (is_spare)
+		online_flag |= ZFS_ONLINE_SPARE;
+
 	/*
 	 * Attempt to online the device.
 	 */
-	if (zpool_vdev_online(zhp, fullpath,
+	if (zpool_vdev_online(zhp, fullpath, online_flag, &newstate) == 0 &&
-	    ZFS_ONLINE_CHECKREMOVE | ZFS_ONLINE_UNSPARE, &newstate) == 0 &&
 	    (newstate == VDEV_STATE_HEALTHY ||
 	    newstate == VDEV_STATE_DEGRADED)) {
 		zed_log_msg(LOG_INFO,
@@ -527,6 +532,7 @@ typedef struct dev_data {
 	uint64_t		dd_vdev_guid;
 	uint64_t		dd_new_vdev_guid;
 	const char		*dd_new_devid;
+	uint64_t		dd_num_spares;
 } dev_data_t;
 
 static void
@@ -537,6 +543,7 @@ zfs_iter_vdev(zpool_handle_t *zhp, nvlist_t *nvl, void *data)
 	uint_t c, children;
 	nvlist_t **child;
 	uint64_t guid = 0;
+	uint64_t isspare = 0;
 
 	/*
 	 * First iterate over any children.
@@ -562,7 +569,7 @@ zfs_iter_vdev(zpool_handle_t *zhp, nvlist_t *nvl, void *data)
 	}
 
 	/* once a vdev was matched and processed there is nothing left to do */
-	if (dp->dd_found)
+	if (dp->dd_found && dp->dd_num_spares == 0)
 		return;
 	(void) nvlist_lookup_uint64(nvl, ZPOOL_CONFIG_GUID, &guid);
 
@@ -612,6 +619,10 @@ zfs_iter_vdev(zpool_handle_t *zhp, nvlist_t *nvl, void *data)
 		}
 	}
 
+	if (dp->dd_found == B_TRUE && nvlist_lookup_uint64(nvl,
+	    ZPOOL_CONFIG_IS_SPARE, &isspare) == 0 && isspare)
+		dp->dd_num_spares++;
+
 	(dp->dd_func)(zhp, nvl, dp->dd_islabeled);
 }
 
@@ -672,7 +683,9 @@ zfs_iter_pool(zpool_handle_t *zhp, void *data)
 	}
 
 	zpool_close(zhp);
-	return (dp->dd_found);	/* cease iteration after a match */
+
+	/* cease iteration after a match */
+	return (dp->dd_found && dp->dd_num_spares == 0);
 }
 
 /*

cmd/zed/agents/zfs_retire.c

@@ -75,6 +75,8 @@ typedef struct find_cbdata {
 	uint64_t	cb_guid;
 	zpool_handle_t	*cb_zhp;
 	nvlist_t	*cb_vdev;
+	uint64_t	cb_vdev_guid;
+	uint64_t	cb_num_spares;
 } find_cbdata_t;
 
 static int
@@ -140,6 +142,64 @@ find_vdev(libzfs_handle_t *zhdl, nvlist_t *nv, uint64_t search_guid)
 	return (NULL);
 }
 
+static int
+remove_spares(zpool_handle_t *zhp, void *data)
+{
+	nvlist_t *config, *nvroot;
+	nvlist_t **spares;
+	uint_t nspares;
+	char *devname;
+	find_cbdata_t *cbp = data;
+	uint64_t spareguid = 0;
+	vdev_stat_t *vs;
+	unsigned int c;
+
+	config = zpool_get_config(zhp, NULL);
+	if (nvlist_lookup_nvlist(config,
+	    ZPOOL_CONFIG_VDEV_TREE, &nvroot) != 0) {
+		zpool_close(zhp);
+		return (0);
+	}
+
+	if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES,
+	    &spares, &nspares) != 0) {
+		zpool_close(zhp);
+		return (0);
+	}
+
+	for (int i = 0; i < nspares; i++) {
+		if (nvlist_lookup_uint64(spares[i], ZPOOL_CONFIG_GUID,
+		    &spareguid) == 0 && spareguid == cbp->cb_vdev_guid) {
+			devname = zpool_vdev_name(NULL, zhp, spares[i],
+			    B_FALSE);
+			nvlist_lookup_uint64_array(spares[i],
+			    ZPOOL_CONFIG_VDEV_STATS, (uint64_t **)&vs, &c);
+			if (vs->vs_state != VDEV_STATE_REMOVED &&
+			    zpool_vdev_remove_wanted(zhp, devname) == 0)
+				cbp->cb_num_spares++;
+			break;
+		}
+	}
+
+	zpool_close(zhp);
+	return (0);
+}
+
+/*
+ * Given a vdev guid, find and remove all spares associated with it.
+ */
+static int
+find_and_remove_spares(libzfs_handle_t *zhdl, uint64_t vdev_guid)
+{
+	find_cbdata_t cb;
+
+	cb.cb_num_spares = 0;
+	cb.cb_vdev_guid = vdev_guid;
+	zpool_iter(zhdl, remove_spares, &cb);
+
+	return (cb.cb_num_spares);
+}
+
 /*
  * Given a (pool, vdev) GUID pair, find the matching pool and vdev.
  */
@@ -315,6 +375,8 @@ zfs_retire_recv(fmd_hdl_t *hdl, fmd_event_t *ep, nvlist_t *nvl,
 	libzfs_handle_t *zhdl = zdp->zrd_hdl;
 	boolean_t fault_device, degrade_device;
 	boolean_t is_repair;
+	boolean_t l2arc = B_FALSE;
+	boolean_t spare = B_FALSE;
 	char *scheme;
 	nvlist_t *vdev = NULL;
 	char *uuid;
@@ -323,6 +385,8 @@ zfs_retire_recv(fmd_hdl_t *hdl, fmd_event_t *ep, nvlist_t *nvl,
 	boolean_t is_disk;
 	vdev_aux_t aux;
 	uint64_t state = 0;
+	vdev_stat_t *vs;
+	unsigned int c;
 
 	fmd_hdl_debug(hdl, "zfs_retire_recv: '%s'", class);
 
@@ -339,10 +403,26 @@ zfs_retire_recv(fmd_hdl_t *hdl, fmd_event_t *ep, nvlist_t *nvl,
 		char *devtype;
 		char *devname;
 
+		if (nvlist_lookup_string(nvl, FM_EREPORT_PAYLOAD_ZFS_VDEV_TYPE,
+		    &devtype) == 0) {
+			if (strcmp(devtype, VDEV_TYPE_SPARE) == 0)
+				spare = B_TRUE;
+			else if (strcmp(devtype, VDEV_TYPE_L2CACHE) == 0)
+				l2arc = B_TRUE;
+		}
+
+		if (nvlist_lookup_uint64(nvl,
+		    FM_EREPORT_PAYLOAD_ZFS_VDEV_GUID, &vdev_guid) != 0)
+			return;
+
+		if (spare) {
+			int nspares = find_and_remove_spares(zhdl, vdev_guid);
+			fmd_hdl_debug(hdl, "%d spares removed", nspares);
+			return;
+		}
+
 		if (nvlist_lookup_uint64(nvl, FM_EREPORT_PAYLOAD_ZFS_POOL_GUID,
-		    &pool_guid) != 0 ||
+		    &pool_guid) != 0)
-		    nvlist_lookup_uint64(nvl, FM_EREPORT_PAYLOAD_ZFS_VDEV_GUID,
-		    &vdev_guid) != 0)
 			return;
 
 		if ((zhp = find_by_guid(zhdl, pool_guid, vdev_guid,
@@ -351,13 +431,30 @@ zfs_retire_recv(fmd_hdl_t *hdl, fmd_event_t *ep, nvlist_t *nvl,
 
 		devname = zpool_vdev_name(NULL, zhp, vdev, B_FALSE);
 
-		/* Can't replace l2arc with a spare: offline the device */
+		nvlist_lookup_uint64_array(vdev, ZPOOL_CONFIG_VDEV_STATS,
-		if (nvlist_lookup_string(nvl, FM_EREPORT_PAYLOAD_ZFS_VDEV_TYPE,
+		    (uint64_t **)&vs, &c);
-		    &devtype) == 0 && strcmp(devtype, VDEV_TYPE_L2CACHE) == 0) {
+
-			fmd_hdl_debug(hdl, "zpool_vdev_offline '%s'", devname);
+		/*
-			zpool_vdev_offline(zhp, devname, B_TRUE);
+		 * If state removed is requested for already removed vdev,
-		} else if (!fmd_prop_get_int32(hdl, "spare_on_remove") ||
+		 * its a loopback event from spa_async_remove(). Just
-		    replace_with_spare(hdl, zhp, vdev) == B_FALSE) {
+		 * ignore it.
+		 */
+		if (vs->vs_state == VDEV_STATE_REMOVED &&
+		    state == VDEV_STATE_REMOVED)
+			return;
+
+		/* Remove the vdev since device is unplugged */
+		int remove_status = 0;
+		if (l2arc || (strcmp(class, "resource.fs.zfs.removed") == 0)) {
+			remove_status = zpool_vdev_remove_wanted(zhp, devname);
+			fmd_hdl_debug(hdl, "zpool_vdev_remove_wanted '%s'"
+			    ", err:%d", devname, libzfs_errno(zhdl));
+		}
+
+		/* Replace the vdev with a spare if its not a l2arc */
+		if (!l2arc && !remove_status &&
+		    (!fmd_prop_get_int32(hdl, "spare_on_remove") ||
+		    replace_with_spare(hdl, zhp, vdev) == B_FALSE)) {
 			/* Could not handle with spare */
 			fmd_hdl_debug(hdl, "no spare for '%s'", devname);
 		}

cmd/zfs/zfs_main.c

@@ -315,14 +315,14 @@ get_usage(zfs_help_t idx)
 	case HELP_ROLLBACK:
 		return (gettext("\trollback [-rRf] <snapshot>\n"));
 	case HELP_SEND:
-		return (gettext("\tsend [-DnPpRvLecwhb] [-[i|I] snapshot] "
+		return (gettext("\tsend [-DnPpRVvLecwhb] [-[i|I] snapshot] "
 		    "<snapshot>\n"
-		    "\tsend [-DnvPLecw] [-i snapshot|bookmark] "
+		    "\tsend [-DnVvPLecw] [-i snapshot|bookmark] "
 		    "<filesystem|volume|snapshot>\n"
-		    "\tsend [-DnPpvLec] [-i bookmark|snapshot] "
+		    "\tsend [-DnPpVvLec] [-i bookmark|snapshot] "
 		    "--redact <bookmark> <snapshot>\n"
-		    "\tsend [-nvPe] -t <receive_resume_token>\n"
+		    "\tsend [-nVvPe] -t <receive_resume_token>\n"
-		    "\tsend [-Pnv] --saved filesystem\n"));
+		    "\tsend [-PnVv] --saved filesystem\n"));
 	case HELP_SET:
 		return (gettext("\tset <property=value> ... "
 		    "<filesystem|volume|snapshot> ...\n"));
@@ -3474,6 +3474,8 @@ print_header(list_cbdata_t *cb)
 	boolean_t first = B_TRUE;
 	boolean_t right_justify;
 
+	color_start(ANSI_BOLD);
+
 	for (; pl != NULL; pl = pl->pl_next) {
 		if (!first) {
 			(void) printf("  ");
@@ -3500,9 +3502,31 @@ print_header(list_cbdata_t *cb)
 			(void) printf("%-*s", (int)pl->pl_width, header);
 	}
 
+	color_end();
+
 	(void) printf("\n");
 }
 
+/*
+ * Decides on the color that the avail value should be printed in.
+ * > 80% used = yellow
+ * > 90% used = red
+ */
+static const char *
+zfs_list_avail_color(zfs_handle_t *zhp)
+{
+	uint64_t used = zfs_prop_get_int(zhp, ZFS_PROP_USED);
+	uint64_t avail = zfs_prop_get_int(zhp, ZFS_PROP_AVAILABLE);
+	int percentage = (int)((double)avail / MAX(avail + used, 1) * 100);
+
+	if (percentage > 20)
+		return (NULL);
+	else if (percentage > 10)
+		return (ANSI_YELLOW);
+	else
+		return (ANSI_RED);
+}
+
 /*
  * Given a dataset and a list of fields, print out all the properties according
  * to the described layout.
@@ -3565,6 +3589,22 @@ print_dataset(zfs_handle_t *zhp, list_cbdata_t *cb)
 			right_justify = B_FALSE;
 		}
 
+		/*
+		 * zfs_list_avail_color() needs ZFS_PROP_AVAILABLE + USED
+		 * - so we need another for() search for the USED part
+		 * - when no colors wanted, we can skip the whole thing
+		 */
+		if (use_color() && pl->pl_prop == ZFS_PROP_AVAILABLE) {
+			zprop_list_t *pl2 = cb->cb_proplist;
+			for (; pl2 != NULL; pl2 = pl2->pl_next) {
+				if (pl2->pl_prop == ZFS_PROP_USED) {
+					color_start(zfs_list_avail_color(zhp));
+					/* found it, no need for more loops */
+					break;
+				}
+			}
+		}
+
 		/*
 		 * If this is being called in scripted mode, or if this is the
 		 * last column and it is left-justified, don't include a width
@@ -3576,6 +3616,9 @@ print_dataset(zfs_handle_t *zhp, list_cbdata_t *cb)
 			(void) printf("%*s", (int)pl->pl_width, propstr);
 		else
 			(void) printf("%-*s", (int)pl->pl_width, propstr);
+
+		if (pl->pl_prop == ZFS_PROP_AVAILABLE)
+			color_end();
 	}
 
 	(void) printf("\n");
@@ -4407,6 +4450,7 @@ zfs_do_send(int argc, char **argv)
 		{"props",	no_argument,		NULL, 'p'},
 		{"parsable",	no_argument,		NULL, 'P'},
 		{"dedup",	no_argument,		NULL, 'D'},
+		{"proctitle",	no_argument,		NULL, 'V'},
 		{"verbose",	no_argument,		NULL, 'v'},
 		{"dryrun",	no_argument,		NULL, 'n'},
 		{"large-block",	no_argument,		NULL, 'L'},
@@ -4421,7 +4465,7 @@ zfs_do_send(int argc, char **argv)
 	};
 
 	/* check options */
-	while ((c = getopt_long(argc, argv, ":i:I:RsDpvnPLeht:cwbd:S",
+	while ((c = getopt_long(argc, argv, ":i:I:RsDpVvnPLeht:cwbd:S",
 	    long_options, NULL)) != -1) {
 		switch (c) {
 		case 'i':
@@ -4456,6 +4500,9 @@ zfs_do_send(int argc, char **argv)
 		case 'P':
 			flags.parsable = B_TRUE;
 			break;
+		case 'V':
+			flags.progressastitle = B_TRUE;
+			break;
 		case 'v':
 			flags.verbosity++;
 			flags.progress = B_TRUE;
@@ -4531,7 +4578,7 @@ zfs_do_send(int argc, char **argv)
 		}
 	}
 
-	if (flags.parsable && flags.verbosity == 0)
+	if ((flags.parsable || flags.progressastitle) && flags.verbosity == 0)
 		flags.verbosity = 1;
 
 	argc -= optind;
@@ -8693,6 +8740,8 @@ main(int argc, char **argv)
 
 	libzfs_print_on_error(g_zfs, B_TRUE);
 
+	zfs_setproctitle_init(argc, argv, environ);
+
 	/*
 	 * Many commands modify input strings for string parsing reasons.
 	 * We create a copy to protect the original argv.

cmd/zpool/zpool_main.c

@@ -392,7 +392,7 @@ get_usage(zpool_help_t idx)
 	case HELP_REOPEN:
 		return (gettext("\treopen [-n] <pool>\n"));
 	case HELP_INITIALIZE:
-		return (gettext("\tinitialize [-c | -s] [-w] <pool> "
+		return (gettext("\tinitialize [-c | -s | -u] [-w] <pool> "
 		    "[<device> ...]\n"));
 	case HELP_SCRUB:
 		return (gettext("\tscrub [-s | -p] [-w] <pool> ...\n"));
@@ -548,12 +548,13 @@ usage(boolean_t requested)
 }
 
 /*
- * zpool initialize [-c | -s] [-w] <pool> [<vdev> ...]
+ * zpool initialize [-c | -s | -u] [-w] <pool> [<vdev> ...]
  * Initialize all unused blocks in the specified vdevs, or all vdevs in the pool
  * if none specified.
  *
  *	-c	Cancel. Ends active initializing.
  *	-s	Suspend. Initializing can then be restarted with no flags.
+ *	-u	Uninitialize. Clears initialization state.
  *	-w	Wait. Blocks until initializing has completed.
  */
 int
@@ -569,12 +570,14 @@ zpool_do_initialize(int argc, char **argv)
 	struct option long_options[] = {
 		{"cancel",	no_argument,		NULL, 'c'},
 		{"suspend",	no_argument,		NULL, 's'},
+		{"uninit",	no_argument,		NULL, 'u'},
 		{"wait",	no_argument,		NULL, 'w'},
 		{0, 0, 0, 0}
 	};
 
 	pool_initialize_func_t cmd_type = POOL_INITIALIZE_START;
-	while ((c = getopt_long(argc, argv, "csw", long_options, NULL)) != -1) {
+	while ((c = getopt_long(argc, argv, "csuw", long_options,
+	    NULL)) != -1) {
 		switch (c) {
 		case 'c':
 			if (cmd_type != POOL_INITIALIZE_START &&
@@ -594,6 +597,15 @@ zpool_do_initialize(int argc, char **argv)
 			}
 			cmd_type = POOL_INITIALIZE_SUSPEND;
 			break;
+		case 'u':
+			if (cmd_type != POOL_INITIALIZE_START &&
+			    cmd_type != POOL_INITIALIZE_UNINIT) {
+				(void) fprintf(stderr, gettext("-u cannot be "
+				    "combined with other options\n"));
+				usage(B_FALSE);
+			}
+			cmd_type = POOL_INITIALIZE_UNINIT;
+			break;
 		case 'w':
 			wait = B_TRUE;
 			break;
@@ -620,8 +632,8 @@ zpool_do_initialize(int argc, char **argv)
 	}
 
 	if (wait && (cmd_type != POOL_INITIALIZE_START)) {
-		(void) fprintf(stderr, gettext("-w cannot be used with -c or "
+		(void) fprintf(stderr, gettext("-w cannot be used with -c, -s"
-		    "-s\n"));
+		    "or -u\n"));
 		usage(B_FALSE);
 	}
 
@@ -4205,6 +4217,8 @@ print_iostat_header_impl(iostat_cbdata_t *cb, unsigned int force_column_width,
 	unsigned int namewidth;
 	const char *title;
 
+	color_start(ANSI_BOLD);
+
 	if (cb->cb_flags & IOS_ANYHISTO_M) {
 		title = histo_to_title[IOS_HISTO_IDX(cb->cb_flags)];
 	} else if (cb->cb_vdev_names_count) {
@@ -4238,6 +4252,8 @@ print_iostat_header_impl(iostat_cbdata_t *cb, unsigned int force_column_width,
 	if (cb->vcdl != NULL)
 		print_cmd_columns(cb->vcdl, 1);
 
+	color_end();
+
 	printf("\n");
 }
 
@@ -4247,6 +4263,37 @@ print_iostat_header(iostat_cbdata_t *cb)
 	print_iostat_header_impl(cb, 0, NULL);
 }
 
+/*
+ * Prints a size string (i.e. 120M) with the suffix ("M") colored
+ * by order of magnitude. Uses column_size to add padding.
+ */
+static void
+print_stat_color(const char *statbuf, unsigned int column_size)
+{
+	fputs("  ", stdout);
+	size_t len = strlen(statbuf);
+	while (len < column_size) {
+		fputc(' ', stdout);
+		column_size--;
+	}
+	if (*statbuf == '0') {
+		color_start(ANSI_GRAY);
+		fputc('0', stdout);
+	} else {
+		for (; *statbuf; statbuf++) {
+			if (*statbuf == 'K') color_start(ANSI_GREEN);
+			else if (*statbuf == 'M') color_start(ANSI_YELLOW);
+			else if (*statbuf == 'G') color_start(ANSI_RED);
+			else if (*statbuf == 'T') color_start(ANSI_BOLD_BLUE);
+			else if (*statbuf == 'P') color_start(ANSI_MAGENTA);
+			else if (*statbuf == 'E') color_start(ANSI_CYAN);
+			fputc(*statbuf, stdout);
+			if (--column_size <= 0)
+				break;
+		}
+	}
+	color_end();
+}
 
 /*
  * Display a single statistic.
@@ -4262,7 +4309,7 @@ print_one_stat(uint64_t value, enum zfs_nicenum_format format,
 	if (scripted)
 		printf("\t%s", buf);
 	else
-		printf("  %*s", column_size, buf);
+		print_stat_color(buf, column_size);
 }
 
 /*
@@ -6886,6 +6933,17 @@ zpool_do_online(int argc, char **argv)
 		return (1);
 
 	for (i = 1; i < argc; i++) {
+		vdev_state_t oldstate;
+		boolean_t avail_spare, l2cache;
+		nvlist_t *tgt = zpool_find_vdev(zhp, argv[i], &avail_spare,
+		    &l2cache, NULL);
+		if (tgt == NULL) {
+			ret = 1;
+			continue;
+		}
+		uint_t vsc;
+		oldstate = ((vdev_stat_t *)fnvlist_lookup_uint64_array(tgt,
+		    ZPOOL_CONFIG_VDEV_STATS, &vsc))->vs_state;
 		if (zpool_vdev_online(zhp, argv[i], flags, &newstate) == 0) {
 			if (newstate != VDEV_STATE_HEALTHY) {
 				(void) printf(gettext("warning: device '%s' "
@@ -6899,6 +6957,17 @@ zpool_do_online(int argc, char **argv)
 					(void) printf(gettext("use 'zpool "
 					    "replace' to replace devices "
 					    "that are no longer present\n"));
+				if ((flags & ZFS_ONLINE_EXPAND)) {
+					(void) printf(gettext("%s: failed "
+					    "to expand usable space on "
+					    "unhealthy device '%s'\n"),
+					    (oldstate >= VDEV_STATE_DEGRADED ?
+					    "error" : "warning"), argv[i]);
+					if (oldstate >= VDEV_STATE_DEGRADED) {
+						ret = 1;
+						break;
+					}
+				}
 			}
 		} else {
 			ret = 1;
@@ -7514,19 +7583,20 @@ print_scan_scrub_resilver_status(pool_scan_stat_t *ps)
 
 	zfs_nicebytes(ps->pss_processed, processed_buf, sizeof (processed_buf));
 
-	assert(ps->pss_func == POOL_SCAN_SCRUB ||
+	int is_resilver = ps->pss_func == POOL_SCAN_RESILVER;
-	    ps->pss_func == POOL_SCAN_RESILVER);
+	int is_scrub = ps->pss_func == POOL_SCAN_SCRUB;
+	assert(is_resilver || is_scrub);
 
 	/* Scan is finished or canceled. */
 	if (ps->pss_state == DSS_FINISHED) {
 		secs_to_dhms(end - start, time_buf);
 
-		if (ps->pss_func == POOL_SCAN_SCRUB) {
+		if (is_scrub) {
 			(void) printf(gettext("scrub repaired %s "
 			    "in %s with %llu errors on %s"), processed_buf,
 			    time_buf, (u_longlong_t)ps->pss_errors,
 			    ctime(&end));
-		} else if (ps->pss_func == POOL_SCAN_RESILVER) {
+		} else if (is_resilver) {
 			(void) printf(gettext("resilvered %s "
 			    "in %s with %llu errors on %s"), processed_buf,
 			    time_buf, (u_longlong_t)ps->pss_errors,
@@ -7534,10 +7604,10 @@ print_scan_scrub_resilver_status(pool_scan_stat_t *ps)
 		}
 		return;
 	} else if (ps->pss_state == DSS_CANCELED) {
-		if (ps->pss_func == POOL_SCAN_SCRUB) {
+		if (is_scrub) {
 			(void) printf(gettext("scrub canceled on %s"),
 			    ctime(&end));
-		} else if (ps->pss_func == POOL_SCAN_RESILVER) {
+		} else if (is_resilver) {
 			(void) printf(gettext("resilver canceled on %s"),
 			    ctime(&end));
 		}
@@ -7547,7 +7617,7 @@ print_scan_scrub_resilver_status(pool_scan_stat_t *ps)
 	assert(ps->pss_state == DSS_SCANNING);
 
 	/* Scan is in progress. Resilvers can't be paused. */
-	if (ps->pss_func == POOL_SCAN_SCRUB) {
+	if (is_scrub) {
 		if (pause == 0) {
 			(void) printf(gettext("scrub in progress since %s"),
 			    ctime(&start));
@@ -7557,7 +7627,7 @@ print_scan_scrub_resilver_status(pool_scan_stat_t *ps)
 			(void) printf(gettext("\tscrub started on %s"),
 			    ctime(&start));
 		}
-	} else if (ps->pss_func == POOL_SCAN_RESILVER) {
+	} else if (is_resilver) {
 		(void) printf(gettext("resilver in progress since %s"),
 		    ctime(&start));
 	}
@@ -7599,17 +7669,27 @@ print_scan_scrub_resilver_status(pool_scan_stat_t *ps)
 		    scanned_buf, issued_buf, total_buf);
 	}
 
-	if (ps->pss_func == POOL_SCAN_RESILVER) {
+	if (is_resilver) {
 		(void) printf(gettext("\t%s resilvered, %.2f%% done"),
 		    processed_buf, 100 * fraction_done);
-	} else if (ps->pss_func == POOL_SCAN_SCRUB) {
+	} else if (is_scrub) {
 		(void) printf(gettext("\t%s repaired, %.2f%% done"),
 		    processed_buf, 100 * fraction_done);
 	}
 
 	if (pause == 0) {
+		/*
+		 * Only provide an estimate iff:
+		 * 1) the time remaining is valid, and
+		 * 2) the issue rate exceeds 10 MB/s, and
+		 * 3) it's either:
+		 *    a) a resilver which has started repairs, or
+		 *    b) a scrub which has entered the issue phase.
+		 */
 		if (total_secs_left != UINT64_MAX &&
-		    issue_rate >= 10 * 1024 * 1024) {
+		    issue_rate >= 10 * 1024 * 1024 &&
+		    ((is_resilver && ps->pss_processed > 0) ||
+		    (is_scrub && issued > 0))) {
 			(void) printf(gettext(", %s to go\n"), time_buf);
 		} else {
 			(void) printf(gettext(", no estimated "

cmd/ztest/ztest.c

@@ -1184,7 +1184,7 @@ ztest_kill(ztest_shared_t *zs)
 	 * See comment above spa_write_cachefile().
 	 */
 	mutex_enter(&spa_namespace_lock);
-	spa_write_cachefile(ztest_spa, B_FALSE, B_FALSE);
+	spa_write_cachefile(ztest_spa, B_FALSE, B_FALSE, B_FALSE);
 	mutex_exit(&spa_namespace_lock);
 
 	(void) kill(getpid(), SIGKILL);

config/always-compiler-options.m4

@@ -221,3 +221,34 @@ AC_DEFUN([ZFS_AC_CONFIG_ALWAYS_CC_NO_IPA_SRA], [
 	CFLAGS="$saved_flags"
 	AC_SUBST([NO_IPA_SRA])
 ])
+
+dnl #
+dnl # Check if kernel cc supports -fno-ipa-sra option.
+dnl #
+AC_DEFUN([ZFS_AC_CONFIG_ALWAYS_KERNEL_CC_NO_IPA_SRA], [
+	AC_MSG_CHECKING([whether $KERNEL_CC supports -fno-ipa-sra])
+
+	saved_cc="$CC"
+	saved_flags="$CFLAGS"
+	CC="gcc"
+	CFLAGS="$CFLAGS -Werror -fno-ipa-sra"
+
+	AS_IF([ test -n "$KERNEL_CC" ], [
+		CC="$KERNEL_CC"
+	])
+	AS_IF([ test -n "$KERNEL_LLVM" ], [
+		CC="clang"
+	])
+
+	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [])], [
+		KERNEL_NO_IPA_SRA=-fno-ipa-sra
+		AC_MSG_RESULT([yes])
+	], [
+		KERNEL_NO_IPA_SRA=
+		AC_MSG_RESULT([no])
+	])
+
+	CC="$saved_cc"
+	CFLAGS="$saved_flags"
+	AC_SUBST([KERNEL_NO_IPA_SRA])
+])

config/always-python.m4

@@ -1,7 +1,6 @@
 dnl #
 dnl # The majority of the python scripts are written to be compatible
-dnl # with Python 2.6 and Python 3.4.  Therefore, they may be installed
+dnl # with Python 3.6. This option is intended to
-dnl # and used with either interpreter.  This option is intended to
 dnl # to provide a method to specify the default system version, and
 dnl # set the PYTHON environment variable accordingly.
 dnl #
@@ -13,9 +12,7 @@ AC_DEFUN([ZFS_AC_CONFIG_ALWAYS_PYTHON], [
 		[with_python=check])
 
 	AS_CASE([$with_python],
-		[check], [AC_CHECK_PROGS([PYTHON], [python3 python2], [:])],
+		[check], [AC_CHECK_PROGS([PYTHON], [python3], [:])],
-		[2*], [PYTHON="python${with_python}"],
-		[*python2*], [PYTHON="${with_python}"],
 		[3*], [PYTHON="python${with_python}"],
 		[*python3*], [PYTHON="${with_python}"],
 		[no], [PYTHON=":"],
@@ -23,8 +20,7 @@ AC_DEFUN([ZFS_AC_CONFIG_ALWAYS_PYTHON], [
 	)
 
 	dnl #
-	dnl # Minimum supported Python versions for utilities:
+	dnl # Minimum supported Python versions for utilities: Python 3.6
-	dnl # Python 2.6 or Python 3.4
 	dnl #
 	AM_PATH_PYTHON([], [], [:])
 	AS_IF([test -z "$PYTHON_VERSION"], [
@@ -33,25 +29,16 @@ AC_DEFUN([ZFS_AC_CONFIG_ALWAYS_PYTHON], [
 	PYTHON_MINOR=${PYTHON_VERSION#*\.}
 
 	AS_CASE([$PYTHON_VERSION],
-		[2.*], [
-			AS_IF([test $PYTHON_MINOR -lt 6],
-				[AC_MSG_ERROR("Python >= 2.6 is required")])
-		],
 		[3.*], [
-			AS_IF([test $PYTHON_MINOR -lt 4],
+			AS_IF([test $PYTHON_MINOR -lt 6],
-				[AC_MSG_ERROR("Python >= 3.4 is required")])
+				[AC_MSG_ERROR("Python >= 3.6 is required")])
 		],
 		[:|2|3], [],
 		[PYTHON_VERSION=3]
 	)
 
 	AM_CONDITIONAL([USING_PYTHON], [test "$PYTHON" != :])
-	AM_CONDITIONAL([USING_PYTHON_2], [test "x${PYTHON_VERSION%%\.*}" = x2])
+	AC_SUBST([PYTHON_SHEBANG], [python3])
-	AM_CONDITIONAL([USING_PYTHON_3], [test "x${PYTHON_VERSION%%\.*}" = x3])
-
-	AM_COND_IF([USING_PYTHON_2],
-		[AC_SUBST([PYTHON_SHEBANG], [python2])],
-		[AC_SUBST([PYTHON_SHEBANG], [python3])])
 
 	dnl #
 	dnl # Request that packages be built for a specific Python version.

config/always-pyzfs.m4

@@ -18,7 +18,7 @@ AC_DEFUN([ZFS_AC_PYTHON_MODULE], [
 ])
 
 dnl #
-dnl # Determines if pyzfs can be built, requires Python 2.7 or later.
+dnl # Determines if pyzfs can be built, requires Python 3.6 or later.
 dnl #
 AC_DEFUN([ZFS_AC_CONFIG_ALWAYS_PYZFS], [
 	AC_ARG_ENABLE([pyzfs],
@@ -72,12 +72,11 @@ AC_DEFUN([ZFS_AC_CONFIG_ALWAYS_PYZFS], [
 	])
 
 	dnl #
-	dnl # Require python-devel libraries
+	dnl # Require python3-devel libraries
 	dnl #
 	AS_IF([test "x$enable_pyzfs" = xcheck  -o "x$enable_pyzfs" = xyes], [
 		AS_CASE([$PYTHON_VERSION],
-			[3.*], [PYTHON_REQUIRED_VERSION=">= '3.4.0'"],
+			[3.*], [PYTHON_REQUIRED_VERSION=">= '3.6.0'"],
-			[2.*], [PYTHON_REQUIRED_VERSION=">= '2.7.0'"],
 			[AC_MSG_ERROR("Python $PYTHON_VERSION unknown")]
 		)
 

config/kernel-acl.m4

@@ -236,7 +236,22 @@ dnl #
 dnl # 6.2 API change,
 dnl # set_acl() second paramter changed to a struct dentry *
 dnl #
+dnl # 6.3 API change,
+dnl # set_acl() first parameter changed to struct mnt_idmap *
+dnl #
 AC_DEFUN([ZFS_AC_KERNEL_SRC_INODE_OPERATIONS_SET_ACL], [
+	ZFS_LINUX_TEST_SRC([inode_operations_set_acl_mnt_idmap_dentry], [
+		#include <linux/fs.h>
+
+		int set_acl_fn(struct mnt_idmap *idmap,
+		    struct dentry *dent, struct posix_acl *acl,
+		    int type) { return 0; }
+
+		static const struct inode_operations
+		    iops __attribute__ ((unused)) = {
+			.set_acl = set_acl_fn,
+		};
+	],[])
 	ZFS_LINUX_TEST_SRC([inode_operations_set_acl_userns_dentry], [
 		#include <linux/fs.h>
 
@@ -281,17 +296,24 @@ AC_DEFUN([ZFS_AC_KERNEL_INODE_OPERATIONS_SET_ACL], [
 		AC_DEFINE(HAVE_SET_ACL, 1, [iops->set_acl() exists])
 		AC_DEFINE(HAVE_SET_ACL_USERNS, 1, [iops->set_acl() takes 4 args])
 	],[
-		ZFS_LINUX_TEST_RESULT([inode_operations_set_acl_userns_dentry], [
+		ZFS_LINUX_TEST_RESULT([inode_operations_set_acl_mnt_idmap_dentry], [
 			AC_MSG_RESULT(yes)
 			AC_DEFINE(HAVE_SET_ACL, 1, [iops->set_acl() exists])
-			AC_DEFINE(HAVE_SET_ACL_USERNS_DENTRY_ARG2, 1,
+			AC_DEFINE(HAVE_SET_ACL_IDMAP_DENTRY, 1,
-			    [iops->set_acl() takes 4 args, arg2 is struct dentry *])
+			    [iops->set_acl() takes 4 args, arg1 is struct mnt_idmap *])
 		],[
-			ZFS_LINUX_TEST_RESULT([inode_operations_set_acl], [
+			ZFS_LINUX_TEST_RESULT([inode_operations_set_acl_userns_dentry], [
 				AC_MSG_RESULT(yes)
-				AC_DEFINE(HAVE_SET_ACL, 1, [iops->set_acl() exists, takes 3 args])
+				AC_DEFINE(HAVE_SET_ACL, 1, [iops->set_acl() exists])
+				AC_DEFINE(HAVE_SET_ACL_USERNS_DENTRY_ARG2, 1,
+				    [iops->set_acl() takes 4 args, arg2 is struct dentry *])
 			],[
-				ZFS_LINUX_REQUIRE_API([i_op->set_acl()], [3.14])
+				ZFS_LINUX_TEST_RESULT([inode_operations_set_acl], [
+					AC_MSG_RESULT(yes)
+					AC_DEFINE(HAVE_SET_ACL, 1, [iops->set_acl() exists, takes 3 args])
+				],[
+					ZFS_LINUX_REQUIRE_API([i_op->set_acl()], [3.14])
+				])
 			])
 		])
 	])

config/kernel-blkdev.m4

@@ -103,6 +103,57 @@ AC_DEFUN([ZFS_AC_KERNEL_BLKDEV_CHECK_DISK_CHANGE], [
 	])
 ])
 
+dnl #
+dnl # bdev_kobj() is introduced from 5.12
+dnl #
+AC_DEFUN([ZFS_AC_KERNEL_SRC_BLKDEV_BDEV_KOBJ], [
+	ZFS_LINUX_TEST_SRC([bdev_kobj], [
+		#include <linux/fs.h>
+		#include <linux/blkdev.h>
+		#include <linux/kobject.h>
+	], [
+		struct block_device *bdev = NULL;
+		struct kobject *disk_kobj;
+		disk_kobj = bdev_kobj(bdev);
+	])
+])
+
+AC_DEFUN([ZFS_AC_KERNEL_BLKDEV_BDEV_KOBJ], [
+	AC_MSG_CHECKING([whether bdev_kobj() exists])
+	ZFS_LINUX_TEST_RESULT([bdev_kobj], [
+		AC_MSG_RESULT(yes)
+		AC_DEFINE(HAVE_BDEV_KOBJ, 1,
+		    [bdev_kobj() exists])
+	], [
+		AC_MSG_RESULT(no)
+	])
+])
+
+dnl #
+dnl # part_to_dev() was removed in 5.12
+dnl #
+AC_DEFUN([ZFS_AC_KERNEL_SRC_BLKDEV_PART_TO_DEV], [
+	ZFS_LINUX_TEST_SRC([part_to_dev], [
+		#include <linux/fs.h>
+		#include <linux/blkdev.h>
+	], [
+		struct hd_struct *p = NULL;
+		struct device *pdev;
+		pdev = part_to_dev(p);
+	])
+])
+
+AC_DEFUN([ZFS_AC_KERNEL_BLKDEV_PART_TO_DEV], [
+	AC_MSG_CHECKING([whether part_to_dev() exists])
+	ZFS_LINUX_TEST_RESULT([part_to_dev], [
+		AC_MSG_RESULT(yes)
+		AC_DEFINE(HAVE_PART_TO_DEV, 1,
+		    [part_to_dev() exists])
+	], [
+		AC_MSG_RESULT(no)
+	])
+])
+
 dnl #
 dnl # 5.10 API, check_disk_change() is removed, in favor of
 dnl # bdev_check_media_change(), which doesn't force revalidation
@@ -405,6 +456,8 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_BLKDEV], [
 	ZFS_AC_KERNEL_SRC_BLKDEV_BDEV_WHOLE
 	ZFS_AC_KERNEL_SRC_BLKDEV_BDEVNAME
 	ZFS_AC_KERNEL_SRC_BLKDEV_ISSUE_SECURE_ERASE
+	ZFS_AC_KERNEL_SRC_BLKDEV_BDEV_KOBJ
+	ZFS_AC_KERNEL_SRC_BLKDEV_PART_TO_DEV
 ])
 
 AC_DEFUN([ZFS_AC_KERNEL_BLKDEV], [
@@ -421,4 +474,6 @@ AC_DEFUN([ZFS_AC_KERNEL_BLKDEV], [
 	ZFS_AC_KERNEL_BLKDEV_BDEVNAME
 	ZFS_AC_KERNEL_BLKDEV_GET_ERESTARTSYS
 	ZFS_AC_KERNEL_BLKDEV_ISSUE_SECURE_ERASE
+	ZFS_AC_KERNEL_BLKDEV_BDEV_KOBJ
+	ZFS_AC_KERNEL_BLKDEV_PART_TO_DEV
 ])

config/kernel-cpu_has_feature.m4

@@ -0,0 +1,29 @@
+dnl #
+dnl # cpu_has_feature() may referencing GPL-only cpu_feature_keys on powerpc
+dnl #
+
+dnl #
+dnl # Checking if cpu_has_feature is exported GPL-only
+dnl #
+AC_DEFUN([ZFS_AC_KERNEL_SRC_CPU_HAS_FEATURE], [
+	ZFS_LINUX_TEST_SRC([cpu_has_feature], [
+		#include <linux/version.h>
+		#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 7, 0)
+		#include <asm/cpu_has_feature.h>
+		#else
+		#include <asm/cputable.h>
+		#endif
+	], [
+		return cpu_has_feature(CPU_FTR_ALTIVEC) ? 0 : 1;
+	], [], [ZFS_META_LICENSE])
+])
+AC_DEFUN([ZFS_AC_KERNEL_CPU_HAS_FEATURE], [
+	AC_MSG_CHECKING([whether cpu_has_feature() is GPL-only])
+	ZFS_LINUX_TEST_RESULT([cpu_has_feature_license], [
+		AC_MSG_RESULT(no)
+	], [
+		AC_MSG_RESULT(yes)
+		AC_DEFINE(HAVE_CPU_HAS_FEATURE_GPL_ONLY, 1,
+		    [cpu_has_feature() is GPL-only])
+	])
+])

config/kernel-filemap.m4

@@ -0,0 +1,26 @@
+dnl #
+dnl # filemap_range_has_page was not available till 4.13
+dnl #
+AC_DEFUN([ZFS_AC_KERNEL_SRC_FILEMAP], [
+	ZFS_LINUX_TEST_SRC([filemap_range_has_page], [
+		#include <linux/fs.h>
+	],[
+		struct address_space *mapping = NULL;
+		loff_t lstart = 0;
+		loff_t lend = 0;
+		bool ret __attribute__ ((unused));
+
+		ret = filemap_range_has_page(mapping, lstart, lend);
+	])
+])
+
+AC_DEFUN([ZFS_AC_KERNEL_FILEMAP], [
+	AC_MSG_CHECKING([whether filemap_range_has_page() is available])
+	ZFS_LINUX_TEST_RESULT([filemap_range_has_page], [
+		AC_MSG_RESULT(yes)
+		AC_DEFINE(HAVE_FILEMAP_RANGE_HAS_PAGE, 1,
+		[filemap_range_has_page() is available])
+	],[
+		AC_MSG_RESULT(no)
+	])
+])

config/kernel-flush_dcache_page.m4

@@ -0,0 +1,26 @@
+dnl #
+dnl # Starting from Linux 5.13, flush_dcache_page() becomes an inline
+dnl # function and may indirectly referencing GPL-only cpu_feature_keys on
+dnl # powerpc
+dnl #
+
+dnl #
+dnl # Checking if flush_dcache_page is exported GPL-only
+dnl #
+AC_DEFUN([ZFS_AC_KERNEL_SRC_FLUSH_DCACHE_PAGE], [
+	ZFS_LINUX_TEST_SRC([flush_dcache_page], [
+		#include <asm/cacheflush.h>
+	], [
+		flush_dcache_page(0);
+	], [], [ZFS_META_LICENSE])
+])
+AC_DEFUN([ZFS_AC_KERNEL_FLUSH_DCACHE_PAGE], [
+	AC_MSG_CHECKING([whether flush_dcache_page() is GPL-only])
+	ZFS_LINUX_TEST_RESULT([flush_dcache_page_license], [
+		AC_MSG_RESULT(no)
+	], [
+		AC_MSG_RESULT(yes)
+		AC_DEFINE(HAVE_FLUSH_DCACHE_PAGE_GPL_ONLY, 1,
+		    [flush_dcache_page() is GPL-only])
+	])
+])

config/kernel-generic_fillattr.m4

@@ -4,7 +4,10 @@ dnl #
 dnl # generic_fillattr in linux/fs.h now requires a struct user_namespace*
 dnl # as the first arg, to support idmapped mounts.
 dnl #
-AC_DEFUN([ZFS_AC_KERNEL_SRC_GENERIC_FILLATTR_USERNS], [
+dnl # 6.3 API
+dnl # generic_fillattr() now takes struct mnt_idmap* as the first argument
+dnl #
+AC_DEFUN([ZFS_AC_KERNEL_SRC_GENERIC_FILLATTR], [
 	ZFS_LINUX_TEST_SRC([generic_fillattr_userns], [
 		#include <linux/fs.h>
 	],[
@@ -13,16 +16,32 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_GENERIC_FILLATTR_USERNS], [
 		struct kstat *k = NULL;
 		generic_fillattr(userns, in, k);
 	])
-])
 
-AC_DEFUN([ZFS_AC_KERNEL_GENERIC_FILLATTR_USERNS], [
+	ZFS_LINUX_TEST_SRC([generic_fillattr_mnt_idmap], [
-	AC_MSG_CHECKING([whether generic_fillattr requires struct user_namespace*])
+		#include <linux/fs.h>
-	ZFS_LINUX_TEST_RESULT([generic_fillattr_userns], [
-		AC_MSG_RESULT([yes])
-		AC_DEFINE(HAVE_GENERIC_FILLATTR_USERNS, 1,
-		    [generic_fillattr requires struct user_namespace*])
 	],[
-		AC_MSG_RESULT([no])
+		struct mnt_idmap *idmap = NULL;
+		struct inode *in = NULL;
+		struct kstat *k = NULL;
+		generic_fillattr(idmap, in, k);
+	])
+])
+
+AC_DEFUN([ZFS_AC_KERNEL_GENERIC_FILLATTR], [
+	AC_MSG_CHECKING([whether generic_fillattr requires struct mnt_idmap*])
+	ZFS_LINUX_TEST_RESULT([generic_fillattr_mnt_idmap], [
+		AC_MSG_RESULT([yes])
+		AC_DEFINE(HAVE_GENERIC_FILLATTR_IDMAP, 1,
+		    [generic_fillattr requires struct mnt_idmap*])
+	],[
+		AC_MSG_CHECKING([whether generic_fillattr requires struct user_namespace*])
+		ZFS_LINUX_TEST_RESULT([generic_fillattr_userns], [
+			AC_MSG_RESULT([yes])
+			AC_DEFINE(HAVE_GENERIC_FILLATTR_USERNS, 1,
+			    [generic_fillattr requires struct user_namespace*])
+		],[
+			AC_MSG_RESULT([no])
+		])
 	])
 ])
 

config/kernel-generic_io_acct.m4

@@ -2,7 +2,20 @@ dnl #
 dnl # Check for generic io accounting interface.
 dnl #
 AC_DEFUN([ZFS_AC_KERNEL_SRC_GENERIC_IO_ACCT], [
-	ZFS_LINUX_TEST_SRC([bdev_io_acct], [
+	ZFS_LINUX_TEST_SRC([bdev_io_acct_63], [
+		#include <linux/blkdev.h>
+	], [
+		struct block_device *bdev = NULL;
+		struct bio *bio = NULL;
+		unsigned long passed_time = 0;
+		unsigned long start_time;
+
+		start_time = bdev_start_io_acct(bdev, bio_op(bio),
+		    passed_time);
+		bdev_end_io_acct(bdev, bio_op(bio), bio_sectors(bio), start_time);
+	])
+
+	ZFS_LINUX_TEST_SRC([bdev_io_acct_old], [
 		#include <linux/blkdev.h>
 	], [
 		struct block_device *bdev = NULL;
@@ -63,74 +76,85 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_GENERIC_IO_ACCT], [
 
 AC_DEFUN([ZFS_AC_KERNEL_GENERIC_IO_ACCT], [
 	dnl #
-	dnl # 5.19 API,
+	dnl # Linux 6.3, and then backports thereof, changed
+	dnl # the signatures on bdev_start_io_acct/bdev_end_io_acct
 	dnl #
-	dnl # disk_start_io_acct() and disk_end_io_acct() have been replaced by
+	AC_MSG_CHECKING([whether 6.3+ bdev_*_io_acct() are available])
-	dnl # bdev_start_io_acct() and bdev_end_io_acct().
+	ZFS_LINUX_TEST_RESULT([bdev_io_acct_63], [
-	dnl #
-	AC_MSG_CHECKING([whether generic bdev_*_io_acct() are available])
-	ZFS_LINUX_TEST_RESULT([bdev_io_acct], [
 		AC_MSG_RESULT(yes)
-		AC_DEFINE(HAVE_BDEV_IO_ACCT, 1, [bdev_*_io_acct() available])
+		AC_DEFINE(HAVE_BDEV_IO_ACCT_63, 1, [bdev_*_io_acct() available])
 	], [
 		AC_MSG_RESULT(no)
 
 		dnl #
-		dnl # 5.12 API,
+		dnl # 5.19 API,
 		dnl #
-		dnl # bio_start_io_acct() and bio_end_io_acct() became GPL-exported
+		dnl # disk_start_io_acct() and disk_end_io_acct() have been replaced by
-		dnl # so use disk_start_io_acct() and disk_end_io_acct() instead
+		dnl # bdev_start_io_acct() and bdev_end_io_acct().
 		dnl #
-		AC_MSG_CHECKING([whether generic disk_*_io_acct() are available])
+		AC_MSG_CHECKING([whether pre-6.3 bdev_*_io_acct() are available])
-		ZFS_LINUX_TEST_RESULT([disk_io_acct], [
+		ZFS_LINUX_TEST_RESULT([bdev_io_acct_old], [
 			AC_MSG_RESULT(yes)
-			AC_DEFINE(HAVE_DISK_IO_ACCT, 1, [disk_*_io_acct() available])
+			AC_DEFINE(HAVE_BDEV_IO_ACCT_OLD, 1, [bdev_*_io_acct() available])
 		], [
 			AC_MSG_RESULT(no)
-
 			dnl #
-			dnl # 5.7 API,
+			dnl # 5.12 API,
 			dnl #
-			dnl # Added bio_start_io_acct() and bio_end_io_acct() helpers.
+			dnl # bio_start_io_acct() and bio_end_io_acct() became GPL-exported
+			dnl # so use disk_start_io_acct() and disk_end_io_acct() instead
 			dnl #
-			AC_MSG_CHECKING([whether generic bio_*_io_acct() are available])
+			AC_MSG_CHECKING([whether generic disk_*_io_acct() are available])
-			ZFS_LINUX_TEST_RESULT([bio_io_acct], [
+			ZFS_LINUX_TEST_RESULT([disk_io_acct], [
 				AC_MSG_RESULT(yes)
-				AC_DEFINE(HAVE_BIO_IO_ACCT, 1, [bio_*_io_acct() available])
+				AC_DEFINE(HAVE_DISK_IO_ACCT, 1, [disk_*_io_acct() available])
 			], [
 				AC_MSG_RESULT(no)
 
 				dnl #
-				dnl # 4.14 API,
+				dnl # 5.7 API,
 				dnl #
-				dnl # generic_start_io_acct/generic_end_io_acct now require
+				dnl # Added bio_start_io_acct() and bio_end_io_acct() helpers.
-				dnl # request_queue to be provided. No functional changes,
-				dnl # but preparation for inflight accounting.
 				dnl #
-				AC_MSG_CHECKING([whether generic_*_io_acct wants 4 args])
+				AC_MSG_CHECKING([whether generic bio_*_io_acct() are available])
-				ZFS_LINUX_TEST_RESULT_SYMBOL([generic_acct_4args],
+				ZFS_LINUX_TEST_RESULT([bio_io_acct], [
-				    [generic_start_io_acct], [block/bio.c], [
 					AC_MSG_RESULT(yes)
-					AC_DEFINE(HAVE_GENERIC_IO_ACCT_4ARG, 1,
+					AC_DEFINE(HAVE_BIO_IO_ACCT, 1, [bio_*_io_acct() available])
-					    [generic_*_io_acct() 4 arg available])
 				], [
 					AC_MSG_RESULT(no)
 
 					dnl #
-					dnl # 3.19 API addition
+					dnl # 4.14 API,
 					dnl #
-					dnl # torvalds/linux@394ffa50 allows us to increment
+					dnl # generic_start_io_acct/generic_end_io_acct now require
-					dnl # iostat counters without generic_make_request().
+					dnl # request_queue to be provided. No functional changes,
+					dnl # but preparation for inflight accounting.
 					dnl #
-					AC_MSG_CHECKING(
+					AC_MSG_CHECKING([whether generic_*_io_acct wants 4 args])
-					    [whether generic_*_io_acct wants 3 args])
+					ZFS_LINUX_TEST_RESULT_SYMBOL([generic_acct_4args],
-					ZFS_LINUX_TEST_RESULT_SYMBOL([generic_acct_3args],
 					    [generic_start_io_acct], [block/bio.c], [
 						AC_MSG_RESULT(yes)
-						AC_DEFINE(HAVE_GENERIC_IO_ACCT_3ARG, 1,
+						AC_DEFINE(HAVE_GENERIC_IO_ACCT_4ARG, 1,
-						    [generic_*_io_acct() 3 arg available])
+						    [generic_*_io_acct() 4 arg available])
 					], [
 						AC_MSG_RESULT(no)
+
+						dnl #
+						dnl # 3.19 API addition
+						dnl #
+						dnl # torvalds/linux@394ffa50 allows us to increment
+						dnl # iostat counters without generic_make_request().
+						dnl #
+						AC_MSG_CHECKING(
+						    [whether generic_*_io_acct wants 3 args])
+						ZFS_LINUX_TEST_RESULT_SYMBOL([generic_acct_3args],
+						    [generic_start_io_acct], [block/bio.c], [
+							AC_MSG_RESULT(yes)
+							AC_DEFINE(HAVE_GENERIC_IO_ACCT_3ARG, 1,
+							    [generic_*_io_acct() 3 arg available])
+						], [
+							AC_MSG_RESULT(no)
+						])
 					])
 				])
 			])

config/kernel-inode-create.m4

@@ -1,4 +1,22 @@
 AC_DEFUN([ZFS_AC_KERNEL_SRC_CREATE], [
+	dnl #
+	dnl # 6.3 API change
+	dnl # The first arg is changed to struct mnt_idmap *
+	dnl #
+	ZFS_LINUX_TEST_SRC([create_mnt_idmap], [
+		#include <linux/fs.h>
+		#include <linux/sched.h>
+
+		int inode_create(struct mnt_idmap *idmap,
+		    struct inode *inode ,struct dentry *dentry,
+		    umode_t umode, bool flag) { return 0; }
+
+		static const struct inode_operations
+			iops __attribute__ ((unused)) = {
+			.create         = inode_create,
+		};
+	],[])
+
 	dnl #
 	dnl # 5.12 API change that added the struct user_namespace* arg
 	dnl # to the front of this function type's arg list.
@@ -35,19 +53,28 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_CREATE], [
 ])
 
 AC_DEFUN([ZFS_AC_KERNEL_CREATE], [
-	AC_MSG_CHECKING([whether iops->create() takes struct user_namespace*])
+	AC_MSG_CHECKING([whether iops->create() takes struct mnt_idmap*])
-	ZFS_LINUX_TEST_RESULT([create_userns], [
+	ZFS_LINUX_TEST_RESULT([create_mnt_idmap], [
 		AC_MSG_RESULT(yes)
-		AC_DEFINE(HAVE_IOPS_CREATE_USERNS, 1,
+		AC_DEFINE(HAVE_IOPS_CREATE_IDMAP, 1,
-		   [iops->create() takes struct user_namespace*])
+		   [iops->create() takes struct mnt_idmap*])
 	],[
 		AC_MSG_RESULT(no)
 
-		AC_MSG_CHECKING([whether iops->create() passes flags])
+		AC_MSG_CHECKING([whether iops->create() takes struct user_namespace*])
-		ZFS_LINUX_TEST_RESULT([create_flags], [
+		ZFS_LINUX_TEST_RESULT([create_userns], [
 			AC_MSG_RESULT(yes)
+			AC_DEFINE(HAVE_IOPS_CREATE_USERNS, 1,
+			   [iops->create() takes struct user_namespace*])
 		],[
-			ZFS_LINUX_TEST_ERROR([iops->create()])
+			AC_MSG_RESULT(no)
+
+			AC_MSG_CHECKING([whether iops->create() passes flags])
+			ZFS_LINUX_TEST_RESULT([create_flags], [
+				AC_MSG_RESULT(yes)
+			],[
+				ZFS_LINUX_TEST_ERROR([iops->create()])
+			])
 		])
 	])
 ])

config/kernel-inode-getattr.m4

@@ -1,4 +1,24 @@
 AC_DEFUN([ZFS_AC_KERNEL_SRC_INODE_GETATTR], [
+	dnl #
+	dnl # Linux 6.3 API
+	dnl # The first arg of getattr I/O operations handler type
+	dnl # is changed to struct mnt_idmap*
+	dnl #
+	ZFS_LINUX_TEST_SRC([inode_operations_getattr_mnt_idmap], [
+		#include <linux/fs.h>
+
+		int test_getattr(
+		    struct mnt_idmap *idmap,
+		    const struct path *p, struct kstat *k,
+		    u32 request_mask, unsigned int query_flags)
+		    { return 0; }
+
+		static const struct inode_operations
+		    iops __attribute__ ((unused)) = {
+			.getattr = test_getattr,
+		};
+	],[])
+
 	dnl #
 	dnl # Linux 5.12 API
 	dnl # The getattr I/O operations handler type was extended to require
@@ -55,37 +75,48 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_INODE_GETATTR], [
 
 AC_DEFUN([ZFS_AC_KERNEL_INODE_GETATTR], [
 	dnl #
-	dnl # Kernel 5.12 test
+	dnl # Kernel 6.3 test
 	dnl #
-	AC_MSG_CHECKING([whether iops->getattr() takes user_namespace])
+	AC_MSG_CHECKING([whether iops->getattr() takes mnt_idmap])
-	ZFS_LINUX_TEST_RESULT([inode_operations_getattr_userns], [
+	ZFS_LINUX_TEST_RESULT([inode_operations_getattr_mnt_idmap], [
 		AC_MSG_RESULT(yes)
-		AC_DEFINE(HAVE_USERNS_IOPS_GETATTR, 1,
+		AC_DEFINE(HAVE_IDMAP_IOPS_GETATTR, 1,
-		    [iops->getattr() takes struct user_namespace*])
+		    [iops->getattr() takes struct mnt_idmap*])
 	],[
 		AC_MSG_RESULT(no)
-
 		dnl #
-		dnl # Kernel 4.11 test
+		dnl # Kernel 5.12 test
 		dnl #
-		AC_MSG_CHECKING([whether iops->getattr() takes a path])
+		AC_MSG_CHECKING([whether iops->getattr() takes user_namespace])
-		ZFS_LINUX_TEST_RESULT([inode_operations_getattr_path], [
+		ZFS_LINUX_TEST_RESULT([inode_operations_getattr_userns], [
 			AC_MSG_RESULT(yes)
-			AC_DEFINE(HAVE_PATH_IOPS_GETATTR, 1,
+			AC_DEFINE(HAVE_USERNS_IOPS_GETATTR, 1,
-				[iops->getattr() takes a path])
+			    [iops->getattr() takes struct user_namespace*])
 		],[
 			AC_MSG_RESULT(no)
 
 			dnl #
-			dnl # Kernel < 4.11 test
+			dnl # Kernel 4.11 test
 			dnl #
-			AC_MSG_CHECKING([whether iops->getattr() takes a vfsmount])
+			AC_MSG_CHECKING([whether iops->getattr() takes a path])
-			ZFS_LINUX_TEST_RESULT([inode_operations_getattr_vfsmount], [
+			ZFS_LINUX_TEST_RESULT([inode_operations_getattr_path], [
 				AC_MSG_RESULT(yes)
-				AC_DEFINE(HAVE_VFSMOUNT_IOPS_GETATTR, 1,
+				AC_DEFINE(HAVE_PATH_IOPS_GETATTR, 1,
-					[iops->getattr() takes a vfsmount])
+					[iops->getattr() takes a path])
 			],[
 				AC_MSG_RESULT(no)
+
+				dnl #
+				dnl # Kernel < 4.11 test
+				dnl #
+				AC_MSG_CHECKING([whether iops->getattr() takes a vfsmount])
+				ZFS_LINUX_TEST_RESULT([inode_operations_getattr_vfsmount], [
+					AC_MSG_RESULT(yes)
+					AC_DEFINE(HAVE_VFSMOUNT_IOPS_GETATTR, 1,
+						[iops->getattr() takes a vfsmount])
+				],[
+					AC_MSG_RESULT(no)
+				])
 			])
 		])
 	])

config/kernel-inode-setattr.m4

@@ -0,0 +1,87 @@
+AC_DEFUN([ZFS_AC_KERNEL_SRC_INODE_SETATTR], [
+	dnl #
+	dnl # Linux 6.3 API
+	dnl # The first arg of setattr I/O operations handler type
+	dnl # is changed to struct mnt_idmap*
+	dnl #
+	ZFS_LINUX_TEST_SRC([inode_operations_setattr_mnt_idmap], [
+		#include <linux/fs.h>
+
+		int test_setattr(
+		    struct mnt_idmap *idmap,
+		    struct dentry *de, struct iattr *ia)
+		    { return 0; }
+
+		static const struct inode_operations
+		    iops __attribute__ ((unused)) = {
+			.setattr = test_setattr,
+		};
+	],[])
+
+	dnl #
+	dnl # Linux 5.12 API
+	dnl # The setattr I/O operations handler type was extended to require
+	dnl # a struct user_namespace* as its first arg, to support idmapped
+	dnl # mounts.
+	dnl #
+	ZFS_LINUX_TEST_SRC([inode_operations_setattr_userns], [
+		#include <linux/fs.h>
+
+		int test_setattr(
+		    struct user_namespace *userns,
+		    struct dentry *de, struct iattr *ia)
+		    { return 0; }
+
+		static const struct inode_operations
+		    iops __attribute__ ((unused)) = {
+			.setattr = test_setattr,
+		};
+	],[])
+
+	ZFS_LINUX_TEST_SRC([inode_operations_setattr], [
+		#include <linux/fs.h>
+
+		int test_setattr(
+		    struct dentry *de, struct iattr *ia)
+		    { return 0; }
+
+		static const struct inode_operations
+		    iops __attribute__ ((unused)) = {
+			.setattr = test_setattr,
+		};
+	],[])
+])
+
+AC_DEFUN([ZFS_AC_KERNEL_INODE_SETATTR], [
+	dnl #
+	dnl # Kernel 6.3 test
+	dnl #
+	AC_MSG_CHECKING([whether iops->setattr() takes mnt_idmap])
+	ZFS_LINUX_TEST_RESULT([inode_operations_setattr_mnt_idmap], [
+		AC_MSG_RESULT(yes)
+		AC_DEFINE(HAVE_IDMAP_IOPS_SETATTR, 1,
+		    [iops->setattr() takes struct mnt_idmap*])
+	],[
+		AC_MSG_RESULT(no)
+		dnl #
+		dnl # Kernel 5.12 test
+		dnl #
+		AC_MSG_CHECKING([whether iops->setattr() takes user_namespace])
+		ZFS_LINUX_TEST_RESULT([inode_operations_setattr_userns], [
+			AC_MSG_RESULT(yes)
+			AC_DEFINE(HAVE_USERNS_IOPS_SETATTR, 1,
+			    [iops->setattr() takes struct user_namespace*])
+		],[
+			AC_MSG_RESULT(no)
+
+			AC_MSG_CHECKING([whether iops->setattr() exists])
+			ZFS_LINUX_TEST_RESULT([inode_operations_setattr], [
+				AC_MSG_RESULT(yes)
+				AC_DEFINE(HAVE_IOPS_SETATTR, 1,
+					[iops->setattr() exists])
+			],[
+				AC_MSG_RESULT(no)
+			])
+		])
+	])
+])

config/kernel-is_owner_or_cap.m4

@@ -16,12 +16,20 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_INODE_OWNER_OR_CAPABLE], [
 		(void) inode_owner_or_capable(ip);
 	])
 
-	ZFS_LINUX_TEST_SRC([inode_owner_or_capable_idmapped], [
+	ZFS_LINUX_TEST_SRC([inode_owner_or_capable_userns], [
 		#include <linux/fs.h>
 	],[
 		struct inode *ip = NULL;
 		(void) inode_owner_or_capable(&init_user_ns, ip);
 	])
+
+	ZFS_LINUX_TEST_SRC([inode_owner_or_capable_mnt_idmap], [
+		#include <linux/fs.h>
+		#include <linux/mnt_idmapping.h>
+	],[
+		struct inode *ip = NULL;
+		(void) inode_owner_or_capable(&nop_mnt_idmap, ip);
+	])
 ])
 
 AC_DEFUN([ZFS_AC_KERNEL_INODE_OWNER_OR_CAPABLE], [
@@ -35,12 +43,21 @@ AC_DEFUN([ZFS_AC_KERNEL_INODE_OWNER_OR_CAPABLE], [
 
 		AC_MSG_CHECKING(
 		    [whether inode_owner_or_capable() takes user_ns])
-		ZFS_LINUX_TEST_RESULT([inode_owner_or_capable_idmapped], [
+		ZFS_LINUX_TEST_RESULT([inode_owner_or_capable_userns], [
 			AC_MSG_RESULT(yes)
-			AC_DEFINE(HAVE_INODE_OWNER_OR_CAPABLE_IDMAPPED, 1,
+			AC_DEFINE(HAVE_INODE_OWNER_OR_CAPABLE_USERNS, 1,
 			    [inode_owner_or_capable() takes user_ns])
 		],[
-			ZFS_LINUX_TEST_ERROR([capability])
+			AC_MSG_RESULT(no)
+			AC_MSG_CHECKING(
+			    [whether inode_owner_or_capable() takes mnt_idmap])
+			ZFS_LINUX_TEST_RESULT([inode_owner_or_capable_mnt_idmap], [
+				AC_MSG_RESULT(yes)
+				AC_DEFINE(HAVE_INODE_OWNER_OR_CAPABLE_IDMAP, 1,
+				    [inode_owner_or_capable() takes mnt_idmap])
+			], [
+				ZFS_LINUX_TEST_ERROR([capability])
+			])
 		])
 	])
 ])

config/kernel-mkdir.m4

@@ -2,6 +2,22 @@ dnl #
 dnl # Supported mkdir() interfaces checked newest to oldest.
 dnl #
 AC_DEFUN([ZFS_AC_KERNEL_SRC_MKDIR], [
+	dnl #
+	dnl # 6.3 API change
+	dnl # mkdir() takes struct mnt_idmap * as the first arg
+	dnl #
+	ZFS_LINUX_TEST_SRC([mkdir_mnt_idmap], [
+		#include <linux/fs.h>
+
+		int mkdir(struct mnt_idmap *idmap,
+			struct inode *inode, struct dentry *dentry,
+			umode_t umode) { return 0; }
+		static const struct inode_operations
+		    iops __attribute__ ((unused)) = {
+			.mkdir = mkdir,
+		};
+	],[])
+
 	dnl #
 	dnl # 5.12 API change
 	dnl # The struct user_namespace arg was added as the first argument to
@@ -43,25 +59,36 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_MKDIR], [
 
 AC_DEFUN([ZFS_AC_KERNEL_MKDIR], [
 	dnl #
-	dnl # 5.12 API change
+	dnl # 6.3 API change
-	dnl # The struct user_namespace arg was added as the first argument to
+	dnl # mkdir() takes struct mnt_idmap * as the first arg
-	dnl # mkdir() of the iops structure.
 	dnl #
-	AC_MSG_CHECKING([whether iops->mkdir() takes struct user_namespace*])
+	AC_MSG_CHECKING([whether iops->mkdir() takes struct mnt_idmap*])
-	ZFS_LINUX_TEST_RESULT([mkdir_user_namespace], [
+	ZFS_LINUX_TEST_RESULT([mkdir_mnt_idmap], [
 		AC_MSG_RESULT(yes)
-		AC_DEFINE(HAVE_IOPS_MKDIR_USERNS, 1,
+		AC_DEFINE(HAVE_IOPS_MKDIR_IDMAP, 1,
-		    [iops->mkdir() takes struct user_namespace*])
+		    [iops->mkdir() takes struct mnt_idmap*])
 	],[
-		AC_MSG_RESULT(no)
+		dnl #
-
+		dnl # 5.12 API change
-		AC_MSG_CHECKING([whether iops->mkdir() takes umode_t])
+		dnl # The struct user_namespace arg was added as the first argument to
-		ZFS_LINUX_TEST_RESULT([inode_operations_mkdir], [
+		dnl # mkdir() of the iops structure.
+		dnl #
+		AC_MSG_CHECKING([whether iops->mkdir() takes struct user_namespace*])
+		ZFS_LINUX_TEST_RESULT([mkdir_user_namespace], [
 			AC_MSG_RESULT(yes)
-			AC_DEFINE(HAVE_MKDIR_UMODE_T, 1,
+			AC_DEFINE(HAVE_IOPS_MKDIR_USERNS, 1,
-			    [iops->mkdir() takes umode_t])
+			    [iops->mkdir() takes struct user_namespace*])
 		],[
-			ZFS_LINUX_TEST_ERROR([mkdir()])
+			AC_MSG_RESULT(no)
+
+			AC_MSG_CHECKING([whether iops->mkdir() takes umode_t])
+			ZFS_LINUX_TEST_RESULT([inode_operations_mkdir], [
+				AC_MSG_RESULT(yes)
+				AC_DEFINE(HAVE_MKDIR_UMODE_T, 1,
+				    [iops->mkdir() takes umode_t])
+			],[
+				ZFS_LINUX_TEST_ERROR([mkdir()])
+			])
 		])
 	])
 ])

config/kernel-mknod.m4

@@ -1,4 +1,22 @@
 AC_DEFUN([ZFS_AC_KERNEL_SRC_MKNOD], [
+	dnl #
+	dnl # 6.3 API change
+	dnl # The first arg is now struct mnt_idmap*
+	dnl #
+	ZFS_LINUX_TEST_SRC([mknod_mnt_idmap], [
+		#include <linux/fs.h>
+		#include <linux/sched.h>
+
+		int tmp_mknod(struct mnt_idmap *idmap,
+		    struct inode *inode ,struct dentry *dentry,
+		    umode_t u, dev_t d) { return 0; }
+
+		static const struct inode_operations
+			iops __attribute__ ((unused)) = {
+			.mknod          = tmp_mknod,
+		};
+	],[])
+
 	dnl #
 	dnl # 5.12 API change that added the struct user_namespace* arg
 	dnl # to the front of this function type's arg list.
@@ -19,12 +37,20 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_MKNOD], [
 ])
 
 AC_DEFUN([ZFS_AC_KERNEL_MKNOD], [
-	AC_MSG_CHECKING([whether iops->mknod() takes struct user_namespace*])
+	AC_MSG_CHECKING([whether iops->mknod() takes struct mnt_idmap*])
-	ZFS_LINUX_TEST_RESULT([mknod_userns], [
+	ZFS_LINUX_TEST_RESULT([mknod_mnt_idmap], [
 		AC_MSG_RESULT(yes)
-		AC_DEFINE(HAVE_IOPS_MKNOD_USERNS, 1,
+		AC_DEFINE(HAVE_IOPS_MKNOD_IDMAP, 1,
-		    [iops->mknod() takes struct user_namespace*])
+		    [iops->mknod() takes struct mnt_idmap*])
 	],[
 		AC_MSG_RESULT(no)
+		AC_MSG_CHECKING([whether iops->mknod() takes struct user_namespace*])
+		ZFS_LINUX_TEST_RESULT([mknod_userns], [
+			AC_MSG_RESULT(yes)
+			AC_DEFINE(HAVE_IOPS_MKNOD_USERNS, 1,
+			    [iops->mknod() takes struct user_namespace*])
+		],[
+			AC_MSG_RESULT(no)
+		])
 	])
 ])

config/kernel-reclaim_state.m4

@@ -0,0 +1,26 @@
+AC_DEFUN([ZFS_AC_KERNEL_SRC_RECLAIMED], [
+	dnl #
+	dnl # 6.4 API change
+	dnl # The reclaimed_slab of struct reclaim_state
+	dnl # is renamed to reclaimed
+	dnl #
+	ZFS_LINUX_TEST_SRC([reclaim_state_reclaimed], [
+		#include <linux/swap.h>
+		static const struct reclaim_state
+		    rs  __attribute__ ((unused)) = {
+		    .reclaimed = 100,
+		};
+	],[])
+])
+
+AC_DEFUN([ZFS_AC_KERNEL_RECLAIMED], [
+	AC_MSG_CHECKING([whether struct reclaim_state has reclaimed field])
+	ZFS_LINUX_TEST_RESULT([reclaim_state_reclaimed], [
+		AC_MSG_RESULT(yes)
+		AC_DEFINE(HAVE_RECLAIM_STATE_RECLAIMED, 1,
+		   [struct reclaim_state has reclaimed])
+	],[
+		AC_MSG_RESULT(no)
+	])
+])
+

config/kernel-rename.m4

@@ -33,24 +33,48 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_RENAME], [
 			.rename = rename_fn,
 		};
 	],[])
+
+	dnl #
+	dnl # 6.3 API change - the first arg is now struct mnt_idmap*
+	dnl #
+	ZFS_LINUX_TEST_SRC([inode_operations_rename_mnt_idmap], [
+		#include <linux/fs.h>
+		int rename_fn(struct mnt_idmap *idmap, struct inode *sip,
+			struct dentry *sdp, struct inode *tip, struct dentry *tdp,
+			unsigned int flags) { return 0; }
+
+		static const struct inode_operations
+		    iops __attribute__ ((unused)) = {
+			.rename = rename_fn,
+		};
+	],[])
 ])
 
 AC_DEFUN([ZFS_AC_KERNEL_RENAME], [
-	AC_MSG_CHECKING([whether iops->rename() takes struct user_namespace*])
+	AC_MSG_CHECKING([whether iops->rename() takes struct mnt_idmap*])
-	ZFS_LINUX_TEST_RESULT([inode_operations_rename_userns], [
+	ZFS_LINUX_TEST_RESULT([inode_operations_rename_mnt_idmap], [
 		AC_MSG_RESULT(yes)
-		AC_DEFINE(HAVE_IOPS_RENAME_USERNS, 1,
+		AC_DEFINE(HAVE_IOPS_RENAME_IDMAP, 1,
-		    [iops->rename() takes struct user_namespace*])
+		    [iops->rename() takes struct mnt_idmap*])
 	],[
 		AC_MSG_RESULT(no)
 
-		AC_MSG_CHECKING([whether iop->rename() wants flags])
+		AC_MSG_CHECKING([whether iops->rename() takes struct user_namespace*])
-		ZFS_LINUX_TEST_RESULT([inode_operations_rename_flags], [
+		ZFS_LINUX_TEST_RESULT([inode_operations_rename_userns], [
 			AC_MSG_RESULT(yes)
-			AC_DEFINE(HAVE_RENAME_WANTS_FLAGS, 1,
+			AC_DEFINE(HAVE_IOPS_RENAME_USERNS, 1,
-				[iops->rename() wants flags])
+			    [iops->rename() takes struct user_namespace*])
 		],[
 			AC_MSG_RESULT(no)
+
+			AC_MSG_CHECKING([whether iops->rename() wants flags])
+			ZFS_LINUX_TEST_RESULT([inode_operations_rename_flags], [
+				AC_MSG_RESULT(yes)
+				AC_DEFINE(HAVE_RENAME_WANTS_FLAGS, 1,
+					[iops->rename() wants flags])
+			],[
+				AC_MSG_RESULT(no)
+			])
 		])
 	])
 ])

config/kernel-setattr-prepare.m4

@@ -27,26 +27,48 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_SETATTR_PREPARE], [
 		int error __attribute__ ((unused)) =
 			setattr_prepare(userns, dentry, attr);
 	])
+
+	dnl #
+	dnl # 6.3 API change
+	dnl # The first arg of setattr_prepare() is changed to struct mnt_idmap*
+	dnl #
+	ZFS_LINUX_TEST_SRC([setattr_prepare_mnt_idmap], [
+		#include <linux/fs.h>
+	], [
+		struct dentry *dentry = NULL;
+		struct iattr *attr = NULL;
+		struct mnt_idmap *idmap = NULL;
+		int error __attribute__ ((unused)) =
+			setattr_prepare(idmap, dentry, attr);
+	])
 ])
 
 AC_DEFUN([ZFS_AC_KERNEL_SETATTR_PREPARE], [
-	AC_MSG_CHECKING([whether setattr_prepare() is available and accepts struct user_namespace*])
+	AC_MSG_CHECKING([whether setattr_prepare() is available and accepts struct mnt_idmap*])
-	ZFS_LINUX_TEST_RESULT_SYMBOL([setattr_prepare_userns],
+	ZFS_LINUX_TEST_RESULT_SYMBOL([setattr_prepare_mnt_idmap],
 	    [setattr_prepare], [fs/attr.c], [
 		AC_MSG_RESULT(yes)
-		AC_DEFINE(HAVE_SETATTR_PREPARE_USERNS, 1,
+		AC_DEFINE(HAVE_SETATTR_PREPARE_IDMAP, 1,
-		    [setattr_prepare() accepts user_namespace])
+		    [setattr_prepare() accepts mnt_idmap])
 	], [
-		AC_MSG_RESULT(no)
+		AC_MSG_CHECKING([whether setattr_prepare() is available and accepts struct user_namespace*])
-
+		ZFS_LINUX_TEST_RESULT_SYMBOL([setattr_prepare_userns],
-		AC_MSG_CHECKING([whether setattr_prepare() is available, doesn't accept user_namespace])
+		    [setattr_prepare], [fs/attr.c], [
-		ZFS_LINUX_TEST_RESULT_SYMBOL([setattr_prepare],
-			[setattr_prepare], [fs/attr.c], [
 			AC_MSG_RESULT(yes)
-			AC_DEFINE(HAVE_SETATTR_PREPARE_NO_USERNS, 1,
+			AC_DEFINE(HAVE_SETATTR_PREPARE_USERNS, 1,
-				[setattr_prepare() is available, doesn't accept user_namespace])
+			    [setattr_prepare() accepts user_namespace])
 		], [
 			AC_MSG_RESULT(no)
+
+			AC_MSG_CHECKING([whether setattr_prepare() is available, doesn't accept user_namespace])
+			ZFS_LINUX_TEST_RESULT_SYMBOL([setattr_prepare],
+				[setattr_prepare], [fs/attr.c], [
+				AC_MSG_RESULT(yes)
+				AC_DEFINE(HAVE_SETATTR_PREPARE_NO_USERNS, 1,
+					[setattr_prepare() is available, doesn't accept user_namespace])
+			], [
+				AC_MSG_RESULT(no)
+			])
 		])
 	])
 ])

config/kernel-symlink.m4

@@ -1,4 +1,20 @@
 AC_DEFUN([ZFS_AC_KERNEL_SRC_SYMLINK], [
+	dnl #
+	dnl # 6.3 API change that changed the first arg
+	dnl # to struct mnt_idmap*
+	dnl #
+	ZFS_LINUX_TEST_SRC([symlink_mnt_idmap], [
+		#include <linux/fs.h>
+		#include <linux/sched.h>
+		int tmp_symlink(struct mnt_idmap *idmap,
+		    struct inode *inode ,struct dentry *dentry,
+		    const char *path) { return 0; }
+
+		static const struct inode_operations
+			iops __attribute__ ((unused)) = {
+			.symlink                = tmp_symlink,
+		};
+	],[])
 	dnl #
 	dnl # 5.12 API change that added the struct user_namespace* arg
 	dnl # to the front of this function type's arg list.
@@ -19,12 +35,19 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_SYMLINK], [
 ])
 
 AC_DEFUN([ZFS_AC_KERNEL_SYMLINK], [
-	AC_MSG_CHECKING([whether iops->symlink() takes struct user_namespace*])
+	AC_MSG_CHECKING([whether iops->symlink() takes struct mnt_idmap*])
-	ZFS_LINUX_TEST_RESULT([symlink_userns], [
+	ZFS_LINUX_TEST_RESULT([symlink_mnt_idmap], [
 		AC_MSG_RESULT(yes)
-		AC_DEFINE(HAVE_IOPS_SYMLINK_USERNS, 1,
+		AC_DEFINE(HAVE_IOPS_SYMLINK_IDMAP, 1,
-		    [iops->symlink() takes struct user_namespace*])
+		    [iops->symlink() takes struct mnt_idmap*])
 	],[
-		AC_MSG_RESULT(no)
+		AC_MSG_CHECKING([whether iops->symlink() takes struct user_namespace*])
+		ZFS_LINUX_TEST_RESULT([symlink_userns], [
+			AC_MSG_RESULT(yes)
+			AC_DEFINE(HAVE_IOPS_SYMLINK_USERNS, 1,
+			    [iops->symlink() takes struct user_namespace*])
+		],[
+			AC_MSG_RESULT(no)
+		])
 	])
 ])

config/kernel-tmpfile.m4

@@ -4,6 +4,19 @@ dnl # Add support for i_op->tmpfile
 dnl #
 AC_DEFUN([ZFS_AC_KERNEL_SRC_TMPFILE], [
 	dnl #
+	dnl # 6.3 API change
+	dnl # The first arg is now struct mnt_idmap * 
+	dnl #
+	ZFS_LINUX_TEST_SRC([inode_operations_tmpfile_mnt_idmap], [
+		#include <linux/fs.h>
+		int tmpfile(struct mnt_idmap *idmap,
+		    struct inode *inode, struct file *file,
+		    umode_t mode) { return 0; }
+		static struct inode_operations
+		    iops __attribute__ ((unused)) = {
+			.tmpfile = tmpfile,
+		};
+	],[])
 	dnl # 6.1 API change
 	dnl # use struct file instead of struct dentry
 	dnl #
@@ -44,23 +57,29 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_TMPFILE], [
 
 AC_DEFUN([ZFS_AC_KERNEL_TMPFILE], [
 	AC_MSG_CHECKING([whether i_op->tmpfile() exists])
-	ZFS_LINUX_TEST_RESULT([inode_operations_tmpfile], [
+	ZFS_LINUX_TEST_RESULT([inode_operations_tmpfile_mnt_idmap], [
 		AC_MSG_RESULT(yes)
 		AC_DEFINE(HAVE_TMPFILE, 1, [i_op->tmpfile() exists])
-		AC_DEFINE(HAVE_TMPFILE_USERNS, 1, [i_op->tmpfile() has userns])
+		AC_DEFINE(HAVE_TMPFILE_IDMAP, 1, [i_op->tmpfile() has mnt_idmap])
-	],[
+	], [
-		ZFS_LINUX_TEST_RESULT([inode_operations_tmpfile_dentry_userns], [
+		ZFS_LINUX_TEST_RESULT([inode_operations_tmpfile], [
 			AC_MSG_RESULT(yes)
 			AC_DEFINE(HAVE_TMPFILE, 1, [i_op->tmpfile() exists])
 			AC_DEFINE(HAVE_TMPFILE_USERNS, 1, [i_op->tmpfile() has userns])
-			AC_DEFINE(HAVE_TMPFILE_DENTRY, 1, [i_op->tmpfile() uses old dentry signature])
 		],[
-			ZFS_LINUX_TEST_RESULT([inode_operations_tmpfile_dentry], [
+			ZFS_LINUX_TEST_RESULT([inode_operations_tmpfile_dentry_userns], [
 				AC_MSG_RESULT(yes)
 				AC_DEFINE(HAVE_TMPFILE, 1, [i_op->tmpfile() exists])
+				AC_DEFINE(HAVE_TMPFILE_USERNS, 1, [i_op->tmpfile() has userns])
 				AC_DEFINE(HAVE_TMPFILE_DENTRY, 1, [i_op->tmpfile() uses old dentry signature])
 			],[
-				ZFS_LINUX_REQUIRE_API([i_op->tmpfile()], [3.11])
+				ZFS_LINUX_TEST_RESULT([inode_operations_tmpfile_dentry], [
+					AC_MSG_RESULT(yes)
+					AC_DEFINE(HAVE_TMPFILE, 1, [i_op->tmpfile() exists])
+					AC_DEFINE(HAVE_TMPFILE_DENTRY, 1, [i_op->tmpfile() uses old dentry signature])
+				],[
+					ZFS_LINUX_REQUIRE_API([i_op->tmpfile()], [3.11])
+				])
 			])
 		])
 	])

config/kernel-writepage_t.m4

@@ -0,0 +1,26 @@
+AC_DEFUN([ZFS_AC_KERNEL_SRC_WRITEPAGE_T], [
+	dnl #
+	dnl # 6.3 API change
+	dnl # The writepage_t function type now has its first argument as
+	dnl # struct folio* instead of struct page*
+	dnl #
+	ZFS_LINUX_TEST_SRC([writepage_t_folio], [
+		#include <linux/writeback.h>
+		int putpage(struct folio *folio,
+		    struct writeback_control *wbc, void *data)
+		{ return 0; }
+		writepage_t func = putpage;
+	],[])
+])
+
+AC_DEFUN([ZFS_AC_KERNEL_WRITEPAGE_T], [
+	AC_MSG_CHECKING([whether int (*writepage_t)() takes struct folio*])
+	ZFS_LINUX_TEST_RESULT([writepage_t_folio], [
+		AC_MSG_RESULT(yes)
+		AC_DEFINE(HAVE_WRITEPAGE_T_FOLIO, 1,
+		   [int (*writepage_t)() takes struct folio*])
+	],[
+		AC_MSG_RESULT(no)
+	])
+])
+

config/kernel-xattr-handler.m4

@@ -179,6 +179,21 @@ dnl #
 dnl # Supported xattr handler set() interfaces checked newest to oldest.
 dnl #
 AC_DEFUN([ZFS_AC_KERNEL_SRC_XATTR_HANDLER_SET], [
+	ZFS_LINUX_TEST_SRC([xattr_handler_set_mnt_idmap], [
+		#include <linux/xattr.h>
+
+		int set(const struct xattr_handler *handler,
+			struct mnt_idmap *idmap,
+			struct dentry *dentry, struct inode *inode,
+			const char *name, const void *buffer,
+			size_t size, int flags)
+			{ return 0; }
+		static const struct xattr_handler
+			xops __attribute__ ((unused)) = {
+			.set = set,
+		};
+	],[])
+
 	ZFS_LINUX_TEST_SRC([xattr_handler_set_userns], [
 		#include <linux/xattr.h>
 
@@ -240,53 +255,63 @@ AC_DEFUN([ZFS_AC_KERNEL_XATTR_HANDLER_SET], [
 	dnl # The xattr_handler->set() callback was changed to 8 arguments, and
 	dnl # struct user_namespace* was inserted as arg #2
 	dnl #
-	AC_MSG_CHECKING([whether xattr_handler->set() wants dentry, inode, and user_namespace])
+	dnl # 6.3 API change,
-	ZFS_LINUX_TEST_RESULT([xattr_handler_set_userns], [
+	dnl # The xattr_handler->set() callback 2nd arg is now struct mnt_idmap *
+	dnl #
+	AC_MSG_CHECKING([whether xattr_handler->set() wants dentry, inode, and mnt_idmap])
+	ZFS_LINUX_TEST_RESULT([xattr_handler_set_mnt_idmap], [
 		AC_MSG_RESULT(yes)
-		AC_DEFINE(HAVE_XATTR_SET_USERNS, 1,
+		AC_DEFINE(HAVE_XATTR_SET_IDMAP, 1,
-		    [xattr_handler->set() takes user_namespace])
+		    [xattr_handler->set() takes mnt_idmap])
-	],[
+	], [
-		dnl #
+		AC_MSG_CHECKING([whether xattr_handler->set() wants dentry, inode, and user_namespace])
-		dnl # 4.7 API change,
+		ZFS_LINUX_TEST_RESULT([xattr_handler_set_userns], [
-		dnl # The xattr_handler->set() callback was changed to take both
-		dnl # dentry and inode.
-		dnl #
-		AC_MSG_RESULT(no)
-		AC_MSG_CHECKING([whether xattr_handler->set() wants dentry and inode])
-		ZFS_LINUX_TEST_RESULT([xattr_handler_set_dentry_inode], [
 			AC_MSG_RESULT(yes)
-			AC_DEFINE(HAVE_XATTR_SET_DENTRY_INODE, 1,
+			AC_DEFINE(HAVE_XATTR_SET_USERNS, 1,
-			    [xattr_handler->set() wants both dentry and inode])
+			    [xattr_handler->set() takes user_namespace])
 		],[
 			dnl #
-			dnl # 4.4 API change,
+			dnl # 4.7 API change,
-			dnl # The xattr_handler->set() callback was changed to take a
+			dnl # The xattr_handler->set() callback was changed to take both
-			dnl # xattr_handler, and handler_flags argument was removed and
+			dnl # dentry and inode.
-			dnl # should be accessed by handler->flags.
 			dnl #
 			AC_MSG_RESULT(no)
-			AC_MSG_CHECKING(
+			AC_MSG_CHECKING([whether xattr_handler->set() wants dentry and inode])
-			    [whether xattr_handler->set() wants xattr_handler])
+			ZFS_LINUX_TEST_RESULT([xattr_handler_set_dentry_inode], [
-			ZFS_LINUX_TEST_RESULT([xattr_handler_set_xattr_handler], [
 				AC_MSG_RESULT(yes)
-				AC_DEFINE(HAVE_XATTR_SET_HANDLER, 1,
+				AC_DEFINE(HAVE_XATTR_SET_DENTRY_INODE, 1,
-				    [xattr_handler->set() wants xattr_handler])
+				    [xattr_handler->set() wants both dentry and inode])
 			],[
 				dnl #
-				dnl # 2.6.33 API change,
+				dnl # 4.4 API change,
-				dnl # The xattr_handler->set() callback was changed
+				dnl # The xattr_handler->set() callback was changed to take a
-				dnl # to take a dentry instead of an inode, and a
+				dnl # xattr_handler, and handler_flags argument was removed and
-				dnl # handler_flags argument was added.
+				dnl # should be accessed by handler->flags.
 				dnl #
 				AC_MSG_RESULT(no)
 				AC_MSG_CHECKING(
-				    [whether xattr_handler->set() wants dentry])
+				    [whether xattr_handler->set() wants xattr_handler])
-				ZFS_LINUX_TEST_RESULT([xattr_handler_set_dentry], [
+				ZFS_LINUX_TEST_RESULT([xattr_handler_set_xattr_handler], [
 					AC_MSG_RESULT(yes)
-					AC_DEFINE(HAVE_XATTR_SET_DENTRY, 1,
+					AC_DEFINE(HAVE_XATTR_SET_HANDLER, 1,
-					    [xattr_handler->set() wants dentry])
+					    [xattr_handler->set() wants xattr_handler])
 				],[
-					ZFS_LINUX_TEST_ERROR([xattr set()])
+					dnl #
+					dnl # 2.6.33 API change,
+					dnl # The xattr_handler->set() callback was changed
+					dnl # to take a dentry instead of an inode, and a
+					dnl # handler_flags argument was added.
+					dnl #
+					AC_MSG_RESULT(no)
+					AC_MSG_CHECKING(
+					    [whether xattr_handler->set() wants dentry])
+					ZFS_LINUX_TEST_RESULT([xattr_handler_set_dentry], [
+						AC_MSG_RESULT(yes)
+						AC_DEFINE(HAVE_XATTR_SET_DENTRY, 1,
+						    [xattr_handler->set() wants dentry])
+					],[
+						ZFS_LINUX_TEST_ERROR([xattr set()])
+					])
 				])
 			])
 		])

config/kernel.m4

@@ -69,6 +69,7 @@ AC_DEFUN([ZFS_AC_KERNEL_TEST_SRC], [
 	ZFS_AC_KERNEL_SRC_INODE_OWNER_OR_CAPABLE
 	ZFS_AC_KERNEL_SRC_XATTR
 	ZFS_AC_KERNEL_SRC_ACL
+	ZFS_AC_KERNEL_SRC_INODE_SETATTR
 	ZFS_AC_KERNEL_SRC_INODE_GETATTR
 	ZFS_AC_KERNEL_SRC_INODE_SET_FLAGS
 	ZFS_AC_KERNEL_SRC_INODE_SET_IVERSION
@@ -130,7 +131,7 @@ AC_DEFUN([ZFS_AC_KERNEL_TEST_SRC], [
 	ZFS_AC_KERNEL_SRC_KSTRTOUL
 	ZFS_AC_KERNEL_SRC_PERCPU
 	ZFS_AC_KERNEL_SRC_CPU_HOTPLUG
-	ZFS_AC_KERNEL_SRC_GENERIC_FILLATTR_USERNS
+	ZFS_AC_KERNEL_SRC_GENERIC_FILLATTR
 	ZFS_AC_KERNEL_SRC_MKNOD
 	ZFS_AC_KERNEL_SRC_SYMLINK
 	ZFS_AC_KERNEL_SRC_BIO_MAX_SEGS
@@ -144,6 +145,15 @@ AC_DEFUN([ZFS_AC_KERNEL_TEST_SRC], [
 	ZFS_AC_KERNEL_SRC_KTHREAD
 	ZFS_AC_KERNEL_SRC_ZERO_PAGE
 	ZFS_AC_KERNEL_SRC___COPY_FROM_USER_INATOMIC
+	ZFS_AC_KERNEL_SRC_FILEMAP
+	ZFS_AC_KERNEL_SRC_WRITEPAGE_T
+	ZFS_AC_KERNEL_SRC_RECLAIMED
+	case "$host_cpu" in
+		powerpc*)
+			ZFS_AC_KERNEL_SRC_CPU_HAS_FEATURE
+			ZFS_AC_KERNEL_SRC_FLUSH_DCACHE_PAGE
+			;;
+	esac
 
 	AC_MSG_CHECKING([for available kernel interfaces])
 	ZFS_LINUX_TEST_COMPILE_ALL([kabi])
@@ -186,6 +196,7 @@ AC_DEFUN([ZFS_AC_KERNEL_TEST_RESULT], [
 	ZFS_AC_KERNEL_INODE_OWNER_OR_CAPABLE
 	ZFS_AC_KERNEL_XATTR
 	ZFS_AC_KERNEL_ACL
+	ZFS_AC_KERNEL_INODE_SETATTR
 	ZFS_AC_KERNEL_INODE_GETATTR
 	ZFS_AC_KERNEL_INODE_SET_FLAGS
 	ZFS_AC_KERNEL_INODE_SET_IVERSION
@@ -247,7 +258,7 @@ AC_DEFUN([ZFS_AC_KERNEL_TEST_RESULT], [
 	ZFS_AC_KERNEL_KSTRTOUL
 	ZFS_AC_KERNEL_PERCPU
 	ZFS_AC_KERNEL_CPU_HOTPLUG
-	ZFS_AC_KERNEL_GENERIC_FILLATTR_USERNS
+	ZFS_AC_KERNEL_GENERIC_FILLATTR
 	ZFS_AC_KERNEL_MKNOD
 	ZFS_AC_KERNEL_SYMLINK
 	ZFS_AC_KERNEL_BIO_MAX_SEGS
@@ -261,6 +272,15 @@ AC_DEFUN([ZFS_AC_KERNEL_TEST_RESULT], [
 	ZFS_AC_KERNEL_KTHREAD
 	ZFS_AC_KERNEL_ZERO_PAGE
 	ZFS_AC_KERNEL___COPY_FROM_USER_INATOMIC
+	ZFS_AC_KERNEL_FILEMAP
+	ZFS_AC_KERNEL_WRITEPAGE_T
+	ZFS_AC_KERNEL_RECLAIMED
+	case "$host_cpu" in
+		powerpc*)
+			ZFS_AC_KERNEL_CPU_HAS_FEATURE
+			ZFS_AC_KERNEL_FLUSH_DCACHE_PAGE
+			;;
+	esac
 ])
 
 dnl #

config/zfs-build.m4

@@ -81,7 +81,7 @@ AC_DEFUN([ZFS_AC_DEBUG], [
 AC_DEFUN([ZFS_AC_DEBUGINFO_ENABLE], [
 	DEBUG_CFLAGS="$DEBUG_CFLAGS -g -fno-inline $NO_IPA_SRA"
 
-	KERNEL_DEBUG_CFLAGS="$KERNEL_DEBUG_CFLAGS -fno-inline $NO_IPA_SRA"
+	KERNEL_DEBUG_CFLAGS="$KERNEL_DEBUG_CFLAGS -fno-inline $KERNEL_NO_IPA_SRA"
 	KERNEL_MAKE="$KERNEL_MAKE CONFIG_DEBUG_INFO=y"
 
 	DEBUGINFO_ZFS="_with_debuginfo"
@@ -217,6 +217,7 @@ AC_DEFUN([ZFS_AC_CONFIG_ALWAYS], [
 	ZFS_AC_CONFIG_ALWAYS_CC_NO_FORMAT_ZERO_LENGTH
 	ZFS_AC_CONFIG_ALWAYS_CC_NO_OMIT_FRAME_POINTER
 	ZFS_AC_CONFIG_ALWAYS_CC_NO_IPA_SRA
+	ZFS_AC_CONFIG_ALWAYS_KERNEL_CC_NO_IPA_SRA
 	ZFS_AC_CONFIG_ALWAYS_CC_ASAN
 	ZFS_AC_CONFIG_ALWAYS_TOOLCHAIN_SIMD
 	ZFS_AC_CONFIG_ALWAYS_SYSTEM
@@ -518,6 +519,8 @@ AC_DEFUN([ZFS_AC_DEFAULT_PACKAGE], [
 			VENDOR=alpine ;
 		elif test -f /bin/freebsd-version ; then
 			VENDOR=freebsd ;
+		elif test -f /etc/openEuler-release ; then
+			VENDOR=openeuler ;
 		else
 			VENDOR= ;
 		fi],
@@ -542,6 +545,7 @@ AC_DEFUN([ZFS_AC_DEFAULT_PACKAGE], [
 		ubuntu)     DEFAULT_PACKAGE=deb  ;;
 		debian)     DEFAULT_PACKAGE=deb  ;;
 		freebsd)    DEFAULT_PACKAGE=pkg  ;;
+		openeuler)  DEFAULT_PACKAGE=rpm  ;;
 		*)          DEFAULT_PACKAGE=rpm  ;;
 	esac
 	AC_MSG_RESULT([$DEFAULT_PACKAGE])
@@ -555,35 +559,14 @@ AC_DEFUN([ZFS_AC_DEFAULT_PACKAGE], [
 	AC_MSG_RESULT([$initdir])
 	AC_SUBST(initdir)
 
-	AC_MSG_CHECKING([default init script type and shell])
+	AC_MSG_CHECKING([default shell])
 	case "$VENDOR" in
-		toss)       DEFAULT_INIT_SCRIPT=redhat ;;
+		gentoo)     DEFAULT_INIT_SHELL="/sbin/openrc-run";;
-		redhat)     DEFAULT_INIT_SCRIPT=redhat ;;
+		alpine)     DEFAULT_INIT_SHELL="/sbin/openrc-run";;
-		fedora)     DEFAULT_INIT_SCRIPT=fedora ;;
+		*)          DEFAULT_INIT_SHELL="/bin/sh"         ;;
-		gentoo)     DEFAULT_INIT_SCRIPT=openrc ;;
-		alpine)     DEFAULT_INIT_SCRIPT=openrc ;;
-		arch)       DEFAULT_INIT_SCRIPT=lsb    ;;
-		sles)       DEFAULT_INIT_SCRIPT=lsb    ;;
-		slackware)  DEFAULT_INIT_SCRIPT=lsb    ;;
-		lunar)      DEFAULT_INIT_SCRIPT=lunar  ;;
-		ubuntu)     DEFAULT_INIT_SCRIPT=lsb    ;;
-		debian)     DEFAULT_INIT_SCRIPT=lsb    ;;
-		freebsd)    DEFAULT_INIT_SCRIPT=freebsd;;
-		*)          DEFAULT_INIT_SCRIPT=lsb    ;;
 	esac
 
-	# On gentoo, it's possible that OpenRC isn't installed.  Check if
+	AC_MSG_RESULT([$DEFAULT_INIT_SHELL])
-	# /sbin/openrc-run exists, and if not, fall back to generic defaults.
-
-	DEFAULT_INIT_SHELL="/bin/sh"
-	AS_IF([test "$DEFAULT_INIT_SCRIPT" = "openrc"], [
-		AS_IF([test -x "/sbin/openrc-run"],
-			[DEFAULT_INIT_SHELL="/sbin/openrc-run"],
-			[DEFAULT_INIT_SCRIPT=lsb])
-	])
-
-	AC_MSG_RESULT([$DEFAULT_INIT_SCRIPT:$DEFAULT_INIT_SHELL])
-	AC_SUBST(DEFAULT_INIT_SCRIPT)
 	AC_SUBST(DEFAULT_INIT_SHELL)
 
 	AC_MSG_CHECKING([default nfs server init script])
@@ -602,6 +585,7 @@ AC_DEFUN([ZFS_AC_DEFAULT_PACKAGE], [
 		redhat)     initconfdir=/etc/sysconfig ;;
 		fedora)     initconfdir=/etc/sysconfig ;;
 		sles)       initconfdir=/etc/sysconfig ;;
+		openeuler)  initconfdir=/etc/sysconfig ;;
 		ubuntu)     initconfdir=/etc/default   ;;
 		debian)     initconfdir=/etc/default   ;;
 		freebsd)    initconfdir=$sysconfdir/rc.conf.d;;

configure.ac

@@ -222,6 +222,7 @@ AC_CONFIG_FILES([
 	tests/zfs-tests/cmd/mmap_exec/Makefile
 	tests/zfs-tests/cmd/mmap_libaio/Makefile
 	tests/zfs-tests/cmd/mmap_seek/Makefile
+	tests/zfs-tests/cmd/mmap_sync/Makefile
 	tests/zfs-tests/cmd/mmapwrite/Makefile
 	tests/zfs-tests/cmd/nvlist_to_lua/Makefile
 	tests/zfs-tests/cmd/randfree_file/Makefile

contrib/dracut/90zfs/Makefile.am

@@ -15,6 +15,7 @@ pkgdracut_SCRIPTS = \
 
 pkgdracut_DATA = \
 	zfs-env-bootfs.service \
+	zfs-nonroot-necessities.service \
 	zfs-snapshot-bootfs.service \
 	zfs-rollback-bootfs.service
 

contrib/dracut/90zfs/module-setup.sh.in

@@ -84,6 +84,9 @@ install() {
 		inst_simple "${moddir}/zfs-env-bootfs.service" "${systemdsystemunitdir}/zfs-env-bootfs.service"
 		systemctl -q --root "${initdir}" add-wants zfs-import.target zfs-env-bootfs.service
 
+		inst_simple "${moddir}/zfs-nonroot-necessities.service" "${systemdsystemunitdir}/zfs-nonroot-necessities.service"
+		systemctl -q --root "${initdir}" add-requires initrd-root-fs.target zfs-nonroot-necessities.service
+
 		for _service in \
 			"zfs-import-scan.service" \
 			"zfs-import-cache.service"; do

contrib/dracut/90zfs/zfs-env-bootfs.service.in

@@ -1,6 +1,5 @@
 [Unit]
-Description=Set BOOTFS environment for dracut
+Description=Set BOOTFS and BOOTFSFLAGS environment variables for dracut
-Documentation=man:zpool(8)
 DefaultDependencies=no
 After=zfs-import-cache.service
 After=zfs-import-scan.service
@@ -8,7 +7,17 @@ Before=zfs-import.target
 
 [Service]
 Type=oneshot
-ExecStart=/bin/sh -c "exec systemctl set-environment BOOTFS=$(@sbindir@/zpool list -H -o bootfs | grep -m1 -vFx -)"
+ExecStart=/bin/sh -c '                                                                         \
+    . /lib/dracut-zfs-lib.sh;                                                                  \
+    decode_root_args || exit 0;                                                                \
+    [ "$root" = "zfs:AUTO" ] && root="$(@sbindir@/zpool list -H -o bootfs | grep -m1 -vFx -)"; \
+    rootflags="$(getarg rootflags=)";                                                          \
+    case ",$rootflags," in                                                                     \
+        *,zfsutil,*) ;;                                                                        \
+        ,,) rootflags=zfsutil ;;                                                               \
+        *)  rootflags="zfsutil,$rootflags" ;;                                                  \
+    esac;                                                                                      \
+    exec systemctl set-environment BOOTFS="$root" BOOTFSFLAGS="$rootflags"'
 
 [Install]
 WantedBy=zfs-import.target

contrib/dracut/90zfs/zfs-generator.sh.in

@@ -14,81 +14,24 @@ GENERATOR_DIR="$1"
 . /lib/dracut-zfs-lib.sh
 decode_root_args || exit 0
 
-[ -z "${rootflags}" ] && rootflags=$(getarg rootflags=)
-case ",${rootflags}," in
-	*,zfsutil,*) ;;
-	,,)	rootflags=zfsutil ;;
-	*)	rootflags="zfsutil,${rootflags}" ;;
-esac
-
 [ -n "$debug" ] && echo "zfs-generator: writing extension for sysroot.mount to $GENERATOR_DIR/sysroot.mount.d/zfs-enhancement.conf" >> /dev/kmsg
 
 
-mkdir -p "$GENERATOR_DIR"/sysroot.mount.d "$GENERATOR_DIR"/initrd-root-fs.target.requires "$GENERATOR_DIR"/dracut-pre-mount.service.d
+mkdir -p "$GENERATOR_DIR"/sysroot.mount.d "$GENERATOR_DIR"/dracut-pre-mount.service.d
+
 {
     echo "[Unit]"
     echo "Before=initrd-root-fs.target"
     echo "After=zfs-import.target"
     echo
     echo "[Mount]"
-    if [ "${root}" = "zfs:AUTO" ]; then
+    echo "PassEnvironment=BOOTFS BOOTFSFLAGS"
-      echo "PassEnvironment=BOOTFS"
+    echo 'What=${BOOTFS}'
-      echo 'What=${BOOTFS}'
-    else
-      echo "What=${root}"
-    fi
     echo "Type=zfs"
-    echo "Options=${rootflags}"
+    echo 'Options=${BOOTFSFLAGS}'
 } > "$GENERATOR_DIR"/sysroot.mount.d/zfs-enhancement.conf
 ln -fs ../sysroot.mount "$GENERATOR_DIR"/initrd-root-fs.target.requires/sysroot.mount
 
-
-if [ "${root}" = "zfs:AUTO" ]; then
-  {
-      echo "[Unit]"
-      echo "Before=initrd-root-fs.target"
-      echo "After=sysroot.mount"
-      echo "DefaultDependencies=no"
-      echo
-      echo "[Service]"
-      echo "Type=oneshot"
-      echo "PassEnvironment=BOOTFS"
-      echo "ExecStart=/bin/sh -c '" '                                        \
-        . /lib/dracut-zfs-lib.sh;                                            \
-        _zfs_nonroot_necessities_cb() {                                      \
-            zfs mount | grep -m1 -q "^$1 " && return 0;                      \
-            echo "Mounting $1 on /sysroot$2";                                \
-            mount -o zfsutil -t zfs "$1" "/sysroot$2";                       \
-        };                                                                   \
-        for_relevant_root_children "${BOOTFS}" _zfs_nonroot_necessities_cb;' \
-      "'"
-  } > "$GENERATOR_DIR"/zfs-nonroot-necessities.service
-  ln -fs ../zfs-nonroot-necessities.service "$GENERATOR_DIR"/initrd-root-fs.target.requires/zfs-nonroot-necessities.service
-else
-  # We can solve this statically at generation time, so do!
-  _zfs_generator_cb() {
-      dset="${1}"
-      mpnt="${2}"
-      unit="$(systemd-escape --suffix=mount -p "/sysroot${mpnt}")"
-
-      {
-          echo "[Unit]"
-          echo "Before=initrd-root-fs.target"
-          echo "After=sysroot.mount"
-          echo
-          echo "[Mount]"
-          echo "Where=/sysroot${mpnt}"
-          echo "What=${dset}"
-          echo "Type=zfs"
-          echo "Options=zfsutil"
-      } > "$GENERATOR_DIR/${unit}"
-      ln -fs ../"${unit}" "$GENERATOR_DIR"/initrd-root-fs.target.requires/"${unit}"
-  }
-
-  for_relevant_root_children "${root}" _zfs_generator_cb
-fi
-
-
 {
     echo "[Unit]"
     echo "After=zfs-import.target"

contrib/dracut/90zfs/zfs-lib.sh.in

@@ -38,7 +38,7 @@ mount_dataset() {
 
 # for_relevant_root_children DATASET EXEC
 #   Runs "EXEC dataset mountpoint" for all children of DATASET that are needed for system bringup
-#   Used by zfs-generator.sh and friends, too!
+#   Used by zfs-nonroot-necessities.service and friends, too!
 for_relevant_root_children() {
     dataset="${1}"
     exec="${2}"

contrib/dracut/90zfs/zfs-nonroot-necessities.service.in

@@ -0,0 +1,20 @@
+[Unit]
+Before=initrd-root-fs.target
+After=sysroot.mount
+DefaultDependencies=no
+ConditionEnvironment=BOOTFS
+
+[Service]
+Type=oneshot
+PassEnvironment=BOOTFS
+ExecStart=/bin/sh -c '                                                \
+    . /lib/dracut-zfs-lib.sh;                                         \
+    _zfs_nonroot_necessities_cb() {                                   \
+        @sbindir@/zfs mount | grep -m1 -q "^$1 " && return 0;         \
+        echo "Mounting $1 on /sysroot$2";                             \
+        mount -o zfsutil -t zfs "$1" "/sysroot$2";                    \
+    };                                                                \
+    for_relevant_root_children "${BOOTFS}" _zfs_nonroot_necessities_cb'
+
+[Install]
+RequiredBy=initrd-root-fs.target

contrib/dracut/90zfs/zfs-rollback-bootfs.service.in

@@ -5,8 +5,9 @@ After=zfs-import.target dracut-pre-mount.service zfs-snapshot-bootfs.service
 Before=dracut-mount.service
 DefaultDependencies=no
 ConditionKernelCommandLine=bootfs.rollback
+ConditionEnvironment=BOOTFS
 
 [Service]
 Type=oneshot
-ExecStart=/bin/sh -c '. /lib/dracut-zfs-lib.sh; decode_root_args || exit; [ "$root" = "zfs:AUTO" ] && root="$BOOTFS"; SNAPNAME="$(getarg bootfs.rollback)"; exec @sbindir@/zfs rollback -Rf "$root@${SNAPNAME:-%v}"'
+ExecStart=/bin/sh -c '. /lib/dracut-lib.sh; SNAPNAME="$(getarg bootfs.rollback)"; exec @sbindir@/zfs rollback -Rf "$BOOTFS@${SNAPNAME:-%v}"'
 RemainAfterExit=yes

contrib/dracut/90zfs/zfs-snapshot-bootfs.service.in

@@ -5,8 +5,9 @@ After=zfs-import.target dracut-pre-mount.service
 Before=dracut-mount.service
 DefaultDependencies=no
 ConditionKernelCommandLine=bootfs.snapshot
+ConditionEnvironment=BOOTFS
 
 [Service]
 Type=oneshot
-ExecStart=-/bin/sh -c '. /lib/dracut-zfs-lib.sh; decode_root_args || exit; [ "$root" = "zfs:AUTO" ] && root="$BOOTFS"; SNAPNAME="$(getarg bootfs.snapshot)"; exec @sbindir@/zfs snapshot "$root@${SNAPNAME:-%v}"'
+ExecStart=-/bin/sh -c '. /lib/dracut-lib.sh; SNAPNAME="$(getarg bootfs.snapshot)"; exec @sbindir@/zfs snapshot "$BOOTFS@${SNAPNAME:-%v}"'
 RemainAfterExit=yes

contrib/initramfs/scripts/Makefile.am

@@ -7,5 +7,6 @@ dist_scripts_SCRIPTS = \
 
 SUBDIRS = local-top
 
+SHELLCHECK_IGNORE = ,SC2295
 SHELLCHECKDIRS = $(SUBDIRS)
 SHELLCHECK_SHELL = sh

contrib/initramfs/scripts/zfs

@@ -192,7 +192,7 @@ import_pool()
 
 	# Verify that the pool isn't already imported
 	# Make as sure as we can to not require '-f' to import.
-	"${ZPOOL}" get name,guid -o value -H 2>/dev/null | grep -Fxq "$pool" && return 0
+	"${ZPOOL}" get -H -o value name,guid 2>/dev/null | grep -Fxq "$pool" && return 0
 
 	# For backwards compatibility, make sure that ZPOOL_IMPORT_PATH is set
 	# to something we can use later with the real import(s). We want to
@@ -326,7 +326,7 @@ mount_fs()
 
 	# Need the _original_ datasets mountpoint!
 	mountpoint=$(get_fs_value "$fs" mountpoint)
-	ZFS_CMD="mount.zfs -o zfsutil"
+	ZFS_CMD="mount -o zfsutil -t zfs"
 	if [ "$mountpoint" = "legacy" ] || [ "$mountpoint" = "none" ]; then
 		# Can't use the mountpoint property. Might be one of our
 		# clones. Check the 'org.zol:mountpoint' property set in
@@ -341,7 +341,10 @@ mount_fs()
 				# isn't the root fs.
 				return 0
 			fi
-			ZFS_CMD="mount.zfs"
+			# Don't use mount.zfs -o zfsutils for legacy mountpoint
+			if [ "$mountpoint" = "legacy" ]; then
+				ZFS_CMD="mount -t zfs"
+			fi
 			# Last hail-mary: Hope 'rootmnt' is set!
 			mountpoint=""
 		else
@@ -880,12 +883,12 @@ mountroot()
 	fi
 
 	# In case the pool was specified as guid, resolve guid to name
-	pool="$("${ZPOOL}" get name,guid -o name,value -H | \
+	pool="$("${ZPOOL}" get -H -o name,value name,guid | \
 	    awk -v pool="${ZFS_RPOOL}" '$2 == pool { print $1 }')"
 	if [ -n "$pool" ]; then
 		# If $ZFS_BOOTFS contains guid, replace the guid portion with $pool
 		ZFS_BOOTFS=$(echo "$ZFS_BOOTFS" | \
-			sed -e "s/$("${ZPOOL}" get guid -o value "$pool" -H)/$pool/g")
+			sed -e "s/$("${ZPOOL}" get -H -o value guid "$pool")/$pool/g")
 		ZFS_RPOOL="${pool}"
 	fi
 
@@ -911,7 +914,7 @@ mountroot()
 		echo "       not specified on the kernel command line."
 		echo ""
 		echo "Manually mount the root filesystem on $rootmnt and then exit."
-		echo "Hint: Try:  mount.zfs -o zfsutil ${ZFS_RPOOL-rpool}/ROOT/system $rootmnt"
+		echo "Hint: Try:  mount -o zfsutil -t zfs ${ZFS_RPOOL-rpool}/ROOT/system $rootmnt"
 		shell
 	fi
 

contrib/pam_zfs_key/pam_zfs_key.c

@@ -548,16 +548,11 @@ zfs_key_config_modify_session_counter(pam_handle_t *pamh,
 		    errno);
 		return (-1);
 	}
-	size_t runtime_path_len = strlen(runtime_path);
+
-	size_t counter_path_len = runtime_path_len + 1 + 10;
+	char *counter_path;
-	char *counter_path = malloc(counter_path_len + 1);
+	if (asprintf(&counter_path, "%s/%u", runtime_path, config->uid) == -1)
-	if (!counter_path) {
 		return (-1);
-	}
+
-	counter_path[0] = 0;
-	strcat(counter_path, runtime_path);
-	snprintf(counter_path + runtime_path_len, counter_path_len, "/%d",
-	    config->uid);
 	const int fd = open(counter_path,
 	    O_RDWR | O_CLOEXEC | O_CREAT | O_NOFOLLOW,
 	    S_IRUSR | S_IWUSR);

contrib/pyzfs/setup.py.in

@@ -29,13 +29,12 @@ setup(
         "Development Status :: 4 - Beta",
         "Intended Audience :: Developers",
         "License :: OSI Approved :: Apache Software License",
-        "Programming Language :: Python :: 2",
-        "Programming Language :: Python :: 2.7",
         "Programming Language :: Python :: 3",
-        "Programming Language :: Python :: 3.4",
-        "Programming Language :: Python :: 3.5",
         "Programming Language :: Python :: 3.6",
         "Programming Language :: Python :: 3.7",
+        "Programming Language :: Python :: 3.8",
+        "Programming Language :: Python :: 3.9",
+        "Programming Language :: Python :: 3.10",
         "Topic :: System :: Filesystems",
         "Topic :: Software Development :: Libraries",
     ],
@@ -53,7 +52,7 @@ setup(
     setup_requires=[
         "cffi",
     ],
-    python_requires='>=2.7,!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,<4',
+    python_requires='>=3.6,<4',
     zip_safe=False,
     test_suite="libzfs_core.test",
 )

include/libzfs.h

@@ -307,6 +307,7 @@ extern int zpool_vdev_remove_cancel(zpool_handle_t *);
 extern int zpool_vdev_indirect_size(zpool_handle_t *, const char *, uint64_t *);
 extern int zpool_vdev_split(zpool_handle_t *, char *, nvlist_t **, nvlist_t *,
     splitflags_t);
+_LIBZFS_H int zpool_vdev_remove_wanted(zpool_handle_t *, const char *);
 
 extern int zpool_vdev_fault(zpool_handle_t *, uint64_t, vdev_aux_t);
 extern int zpool_vdev_degrade(zpool_handle_t *, uint64_t, vdev_aux_t);
@@ -692,6 +693,9 @@ typedef struct sendflags {
 	/* show progress (ie. -v) */
 	boolean_t progress;
 
+	/* show progress as process title (ie. -V) */
+	boolean_t progressastitle;
+
 	/* large blocks (>128K) are permitted */
 	boolean_t largeblock;
 

include/libzutil.h

@@ -150,17 +150,33 @@ int zfs_ioctl_fd(int fd, unsigned long request, struct zfs_cmd *zc);
 /*
  * List of colors to use
  */
+#define	ANSI_BLACK	"\033[0;30m"
 #define	ANSI_RED	"\033[0;31m"
 #define	ANSI_GREEN	"\033[0;32m"
 #define	ANSI_YELLOW	"\033[0;33m"
 #define	ANSI_BLUE	"\033[0;34m"
+#define	ANSI_BOLD_BLUE	"\033[1;34m" /* light blue */
+#define	ANSI_MAGENTA	"\033[0;35m"
+#define	ANSI_CYAN	"\033[0;36m"
+#define	ANSI_GRAY	"\033[0;37m"
+
 #define	ANSI_RESET	"\033[0m"
 #define	ANSI_BOLD	"\033[1m"
 
+int use_color(void);
 void color_start(const char *color);
 void color_end(void);
 int printf_color(const char *color, char *format, ...);
 
+#ifdef __linux__
+extern char **environ;
+_LIBZUTIL_H void zfs_setproctitle_init(int argc, char *argv[], char *envp[]);
+_LIBZUTIL_H void zfs_setproctitle(const char *fmt, ...);
+#else
+#define	zfs_setproctitle(fmt, ...)	setproctitle(fmt, ##__VA_ARGS__)
+#define	zfs_setproctitle_init(x, y, z)	((void)0)
+#endif
+
 /*
  * These functions are used by the ZFS libraries and cmd/zpool code, but are
  * not exported in the ABI.

include/os/freebsd/zfs/sys/zfs_znode_impl.h

@@ -118,7 +118,8 @@ extern minor_t zfsdev_minor_alloc(void);
 #define	Z_ISLNK(type) ((type) == VLNK)
 #define	Z_ISDIR(type) ((type) == VDIR)
 
-#define	zn_has_cached_data(zp)		vn_has_cached_data(ZTOV(zp))
+#define	zn_has_cached_data(zp, start, end) \
+    vn_has_cached_data(ZTOV(zp))
 #define	zn_flush_cached_data(zp, sync)	vn_flush_cached_data(ZTOV(zp), sync)
 #define	zn_rlimit_fsize(zp, uio) \
     vn_rlimit_fsize(ZTOV(zp), GET_UIO_STRUCT(uio), zfs_uio_td(uio))

include/os/linux/kernel/linux/blkdev_compat.h

@@ -256,6 +256,32 @@ bio_set_bi_error(struct bio *bio, int error)
 #define	BIO_END_IO(bio, error)		bio_endio(bio, error);
 #endif /* HAVE_1ARG_BIO_END_IO_T */
 
+/*
+ * 5.15 MACRO,
+ *   GD_DEAD
+ *
+ * 2.6.36 - 5.14 MACRO,
+ *   GENHD_FL_UP
+ *
+ * Check the disk status and return B_TRUE if alive
+ * otherwise B_FALSE
+ */
+static inline boolean_t
+zfs_check_disk_status(struct block_device *bdev)
+{
+#if defined(GENHD_FL_UP)
+	return (!!(bdev->bd_disk->flags & GENHD_FL_UP));
+#elif defined(GD_DEAD)
+	return (!test_bit(GD_DEAD, &bdev->bd_disk->state));
+#else
+/*
+ * This is encountered if neither GENHD_FL_UP nor GD_DEAD is available in
+ * the kernel - likely due to an MACRO change that needs to be chased down.
+ */
+#error "Unsupported kernel: no usable disk status check"
+#endif
+}
+
 /*
  * 4.1 API,
  * 3.10.0 CentOS 7.x API,
@@ -389,7 +415,7 @@ static inline void
 bio_set_flush(struct bio *bio)
 {
 #if defined(HAVE_REQ_PREFLUSH)	/* >= 4.10 */
-	bio_set_op_attrs(bio, 0, REQ_PREFLUSH);
+	bio_set_op_attrs(bio, 0, REQ_PREFLUSH | REQ_OP_WRITE);
 #elif defined(WRITE_FLUSH_FUA)	/* >= 2.6.37 and <= 4.9 */
 	bio_set_op_attrs(bio, 0, WRITE_FLUSH_FUA);
 #else
@@ -555,7 +581,10 @@ blk_generic_start_io_acct(struct request_queue *q __attribute__((unused)),
     struct gendisk *disk __attribute__((unused)),
     int rw __attribute__((unused)), struct bio *bio)
 {
-#if defined(HAVE_BDEV_IO_ACCT)
+#if defined(HAVE_BDEV_IO_ACCT_63)
+	return (bdev_start_io_acct(bio->bi_bdev, bio_op(bio),
+	    jiffies));
+#elif defined(HAVE_BDEV_IO_ACCT_OLD)
 	return (bdev_start_io_acct(bio->bi_bdev, bio_sectors(bio),
 	    bio_op(bio), jiffies));
 #elif defined(HAVE_DISK_IO_ACCT)
@@ -581,7 +610,10 @@ blk_generic_end_io_acct(struct request_queue *q __attribute__((unused)),
     struct gendisk *disk __attribute__((unused)),
     int rw __attribute__((unused)), struct bio *bio, unsigned long start_time)
 {
-#if defined(HAVE_BDEV_IO_ACCT)
+#if defined(HAVE_BDEV_IO_ACCT_63)
+	bdev_end_io_acct(bio->bi_bdev, bio_op(bio), bio_sectors(bio),
+	    start_time);
+#elif defined(HAVE_BDEV_IO_ACCT_OLD)
 	bdev_end_io_acct(bio->bi_bdev, bio_op(bio), start_time);
 #elif defined(HAVE_DISK_IO_ACCT)
 	disk_end_io_acct(disk, bio_op(bio), start_time);

include/os/linux/kernel/linux/dcache_compat.h

@@ -39,6 +39,21 @@
 #define	d_alias			d_u.d_alias
 #endif
 
+/*
+ * Starting from Linux 5.13, flush_dcache_page() becomes an inline function
+ * and under some configurations, may indirectly referencing GPL-only
+ * cpu_feature_keys on powerpc. Override this function when it is detected
+ * being GPL-only.
+ */
+#if defined __powerpc__ && defined HAVE_FLUSH_DCACHE_PAGE_GPL_ONLY
+#include <linux/simd_powerpc.h>
+#define	flush_dcache_page(page)	do {					\
+		if (!cpu_has_feature(CPU_FTR_COHERENT_ICACHE) &&	\
+		    test_bit(PG_dcache_clean, &(page)->flags))		\
+			clear_bit(PG_dcache_clean, &(page)->flags);	\
+	} while (0)
+#endif
+
 /*
  * 2.6.30 API change,
  * The const keyword was added to the 'struct dentry_operations' in

include/os/linux/kernel/linux/simd_powerpc.h

@@ -76,6 +76,17 @@
 #define	kfpu_init()		0
 #define	kfpu_fini()		((void) 0)
 
+/*
+ * Linux 4.7 makes cpu_has_feature to use jump labels on powerpc if
+ * CONFIG_JUMP_LABEL_FEATURE_CHECKS is enabled, in this case however it
+ * references GPL-only symbol cpu_feature_keys. Therefore we overrides this
+ * interface when it is detected being GPL-only.
+ */
+#if defined(CONFIG_JUMP_LABEL_FEATURE_CHECKS) && \
+    defined(HAVE_CPU_HAS_FEATURE_GPL_ONLY)
+#define	cpu_has_feature(feature)	early_cpu_has_feature(feature)
+#endif
+
 /*
  * Check if AltiVec instruction set is available
  */

include/os/linux/kernel/linux/vfs_compat.h

@@ -344,7 +344,8 @@ static inline void zfs_gid_write(struct inode *ip, gid_t gid)
  * 4.9 API change
  */
 #if !(defined(HAVE_SETATTR_PREPARE_NO_USERNS) || \
-    defined(HAVE_SETATTR_PREPARE_USERNS))
+    defined(HAVE_SETATTR_PREPARE_USERNS) || \
+    defined(HAVE_SETATTR_PREPARE_IDMAP))
 static inline int
 setattr_prepare(struct dentry *dentry, struct iattr *ia)
 {
@@ -399,6 +400,15 @@ func(struct user_namespace *user_ns, const struct path *path,	\
 	return (func##_impl(user_ns, path, stat, request_mask, \
 	    query_flags));	\
 }
+#elif defined(HAVE_IDMAP_IOPS_GETATTR)
+#define	ZPL_GETATTR_WRAPPER(func)					\
+static int								\
+func(struct mnt_idmap *user_ns, const struct path *path,	\
+    struct kstat *stat, u32 request_mask, unsigned int query_flags)	\
+{									\
+	return (func##_impl(user_ns, path, stat, request_mask,	\
+	    query_flags));	\
+}
 #else
 #error
 #endif
@@ -450,8 +460,15 @@ zpl_is_32bit_api(void)
  * 5.12 API change
  * To support id-mapped mounts, generic_fillattr() was modified to
  * accept a new struct user_namespace* as its first arg.
+ *
+ * 6.3 API change
+ * generic_fillattr() first arg is changed to struct mnt_idmap *
+ *
  */
-#ifdef HAVE_GENERIC_FILLATTR_USERNS
+#ifdef HAVE_GENERIC_FILLATTR_IDMAP
+#define	zpl_generic_fillattr(idmap, ip, sp)	\
+    generic_fillattr(idmap, ip, sp)
+#elif defined(HAVE_GENERIC_FILLATTR_USERNS)
 #define	zpl_generic_fillattr(user_ns, ip, sp)	\
     generic_fillattr(user_ns, ip, sp)
 #else

include/os/linux/kernel/linux/xattr_compat.h

@@ -133,20 +133,35 @@ fn(const struct xattr_handler *handler, struct dentry *dentry,		\
 #error "Unsupported kernel"
 #endif
 
+/*
+ * 6.3 API change,
+ * The xattr_handler->set() callback was changed to take the
+ * struct mnt_idmap* as the first arg, to support idmapped
+ * mounts.
+ */
+#if defined(HAVE_XATTR_SET_IDMAP)
+#define	ZPL_XATTR_SET_WRAPPER(fn)					\
+static int								\
+fn(const struct xattr_handler *handler, struct mnt_idmap *user_ns,	\
+    struct dentry *dentry, struct inode *inode, const char *name,	\
+    const void *buffer, size_t size, int flags)	\
+{									\
+	return (__ ## fn(user_ns, inode, name, buffer, size, flags));	\
+}
 /*
  * 5.12 API change,
  * The xattr_handler->set() callback was changed to take the
  * struct user_namespace* as the first arg, to support idmapped
  * mounts.
  */
-#if defined(HAVE_XATTR_SET_USERNS)
+#elif defined(HAVE_XATTR_SET_USERNS)
 #define	ZPL_XATTR_SET_WRAPPER(fn)					\
 static int								\
 fn(const struct xattr_handler *handler, struct user_namespace *user_ns, \
     struct dentry *dentry, struct inode *inode, const char *name,	\
     const void *buffer, size_t size, int flags)	\
 {									\
-	return (__ ## fn(inode, name, buffer, size, flags));		\
+	return (__ ## fn(user_ns, inode, name, buffer, size, flags));	\
 }
 /*
  * 4.7 API change,
@@ -160,7 +175,7 @@ fn(const struct xattr_handler *handler, struct dentry *dentry,		\
     struct inode *inode, const char *name, const void *buffer,		\
     size_t size, int flags)						\
 {									\
-	return (__ ## fn(inode, name, buffer, size, flags));		\
+	return (__ ## fn(kcred->user_ns, inode, name, buffer, size, flags));\
 }
 /*
  * 4.4 API change,
@@ -174,7 +189,8 @@ static int								\
 fn(const struct xattr_handler *handler, struct dentry *dentry,		\
     const char *name, const void *buffer, size_t size, int flags)	\
 {									\
-	return (__ ## fn(dentry->d_inode, name, buffer, size, flags));	\
+	return (__ ## fn(kcred->user_ns, dentry->d_inode, name,		\
+	    buffer, size, flags));					\
 }
 /*
  * 2.6.33 API change,
@@ -187,7 +203,8 @@ static int								\
 fn(struct dentry *dentry, const char *name, const void *buffer,		\
     size_t size, int flags, int unused_handler_flags)			\
 {									\
-	return (__ ## fn(dentry->d_inode, name, buffer, size, flags));	\
+	return (__ ## fn(kcred->user_ns, dentry->d_inode, name, buffer, \
+	    size, flags));						\
 }
 #else
 #error "Unsupported kernel"

include/os/linux/spl/sys/Makefile.am

@@ -20,6 +20,7 @@ KERNEL_H = \
 	kmem.h \
 	kstat.h \
 	list.h \
+	misc.h \
 	mod_os.h \
 	mutex.h \
 	param.h \

include/os/linux/spl/sys/cred.h

@@ -45,6 +45,8 @@ typedef struct cred cred_t;
 #define	SGID_TO_KGID(x)		(KGIDT_INIT(x))
 #define	KGIDP_TO_SGIDP(x)	(&(x)->val)
 
+extern zidmap_t *zfs_get_init_idmap(void);
+
 extern void crhold(cred_t *cr);
 extern void crfree(cred_t *cr);
 extern uid_t crgetuid(const cred_t *cr);

include/os/linux/spl/sys/misc.h

@@ -0,0 +1,29 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License (the "License").
+ * You may not use this file except in compliance with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or https://opensource.org/licenses/CDDL-1.0.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+
+#ifndef _OS_LINUX_SPL_MISC_H
+#define	_OS_LINUX_SPL_MISC_H
+
+#include <linux/kobject.h>
+
+extern void spl_signal_kobj_evt(struct block_device *bdev);
+
+#endif

include/os/linux/spl/sys/types.h

@@ -54,4 +54,18 @@ typedef ulong_t			pgcnt_t;
 typedef int			major_t;
 typedef int			minor_t;
 
+struct user_namespace;
+#ifdef HAVE_IOPS_CREATE_IDMAP
+#include <linux/refcount.h>
+struct mnt_idmap {
+	struct user_namespace *owner;
+	refcount_t count;
+};
+typedef struct mnt_idmap	zidmap_t;
+#else
+typedef struct user_namespace	zidmap_t;
+#endif
+
+extern zidmap_t *zfs_init_idmap;
+
 #endif	/* _SPL_TYPES_H */

include/os/linux/zfs/sys/trace_acl.h

@@ -58,9 +58,10 @@ DECLARE_EVENT_CLASS(zfs_ace_class,
 	    __field(uint64_t,		z_size)
 	    __field(uint64_t,		z_pflags)
 	    __field(uint32_t,		z_sync_cnt)
+	    __field(uint32_t,		z_sync_writes_cnt)
+	    __field(uint32_t,		z_async_writes_cnt)
 	    __field(mode_t,		z_mode)
 	    __field(boolean_t,		z_is_sa)
-	    __field(boolean_t,		z_is_mapped)
 	    __field(boolean_t,		z_is_ctldir)
 
 	    __field(uint32_t,		i_uid)
@@ -90,9 +91,10 @@ DECLARE_EVENT_CLASS(zfs_ace_class,
 	    __entry->z_size		= zn->z_size;
 	    __entry->z_pflags		= zn->z_pflags;
 	    __entry->z_sync_cnt		= zn->z_sync_cnt;
+	    __entry->z_sync_writes_cnt	= zn->z_sync_writes_cnt;
+	    __entry->z_async_writes_cnt	= zn->z_async_writes_cnt;
 	    __entry->z_mode		= zn->z_mode;
 	    __entry->z_is_sa		= zn->z_is_sa;
-	    __entry->z_is_mapped	= zn->z_is_mapped;
 	    __entry->z_is_ctldir	= zn->z_is_ctldir;
 
 	    __entry->i_uid		= KUID_TO_SUID(ZTOI(zn)->i_uid);
@@ -114,18 +116,18 @@ DECLARE_EVENT_CLASS(zfs_ace_class,
 	TP_printk("zn { id %llu unlinked %u atime_dirty %u "
 	    "zn_prefetch %u blksz %u seq %u "
 	    "mapcnt %llu size %llu pflags %llu "
-	    "sync_cnt %u mode 0x%x is_sa %d "
+	    "sync_cnt %u sync_writes_cnt %u async_writes_cnt %u "
-	    "is_mapped %d is_ctldir %d inode { "
+	    "mode 0x%x is_sa %d is_ctldir %d "
-	    "uid %u gid %u ino %lu nlink %u size %lli "
+	    "inode { uid %u gid %u ino %lu nlink %u size %lli "
 	    "blkbits %u bytes %u mode 0x%x generation %x } } "
 	    "ace { type %u flags %u access_mask %u } mask_matched %u",
 	    __entry->z_id, __entry->z_unlinked, __entry->z_atime_dirty,
 	    __entry->z_zn_prefetch, __entry->z_blksz,
 	    __entry->z_seq, __entry->z_mapcnt, __entry->z_size,
-	    __entry->z_pflags, __entry->z_sync_cnt, __entry->z_mode,
+	    __entry->z_pflags, __entry->z_sync_cnt,
-	    __entry->z_is_sa, __entry->z_is_mapped,
+	    __entry->z_sync_writes_cnt, __entry->z_async_writes_cnt,
-	    __entry->z_is_ctldir, __entry->i_uid,
+	    __entry->z_mode, __entry->z_is_sa, __entry->z_is_ctldir,
-	    __entry->i_gid, __entry->i_ino, __entry->i_nlink,
+	    __entry->i_uid, __entry->i_gid, __entry->i_ino, __entry->i_nlink,
 	    __entry->i_size, __entry->i_blkbits,
 	    __entry->i_bytes, __entry->i_mode, __entry->i_generation,
 	    __entry->z_type, __entry->z_flags, __entry->z_access_mask,

include/os/linux/zfs/sys/zfs_vnops_os.h

@@ -54,8 +54,7 @@ extern int zfs_mkdir(znode_t *dzp, char *dirname, vattr_t *vap,
 extern int zfs_rmdir(znode_t *dzp, char *name, znode_t *cwd,
     cred_t *cr, int flags);
 extern int zfs_readdir(struct inode *ip, zpl_dir_context_t *ctx, cred_t *cr);
-extern int zfs_getattr_fast(struct user_namespace *, struct inode *ip,
+extern int zfs_getattr_fast(zidmap_t *, struct inode *ip, struct kstat *sp);
-	struct kstat *sp);
 extern int zfs_setattr(znode_t *zp, vattr_t *vap, int flag, cred_t *cr);
 extern int zfs_rename(znode_t *sdzp, char *snm, znode_t *tdzp,
     char *tnm, cred_t *cr, int flags);
@@ -68,9 +67,9 @@ extern void zfs_inactive(struct inode *ip);
 extern int zfs_space(znode_t *zp, int cmd, flock64_t *bfp, int flag,
     offset_t offset, cred_t *cr);
 extern int zfs_fid(struct inode *ip, fid_t *fidp);
-extern int zfs_getpage(struct inode *ip, struct page *pl[], int nr_pages);
+extern int zfs_getpage(struct inode *ip, struct page *pp);
 extern int zfs_putpage(struct inode *ip, struct page *pp,
-    struct writeback_control *wbc);
+    struct writeback_control *wbc, boolean_t for_sync);
 extern int zfs_dirty_inode(struct inode *ip, int flags);
 extern int zfs_map(struct inode *ip, offset_t off, caddr_t *addrp,
     size_t len, unsigned long vm_flags);

include/os/linux/zfs/sys/zfs_znode_impl.h

@@ -47,9 +47,16 @@
 extern "C" {
 #endif
 
+#if defined(HAVE_FILEMAP_RANGE_HAS_PAGE)
 #define	ZNODE_OS_FIELDS			\
 	inode_timespec_t z_btime; /* creation/birth time (cached) */ \
 	struct inode	z_inode;
+#else
+#define	ZNODE_OS_FIELDS			\
+	inode_timespec_t z_btime; /* creation/birth time (cached) */ \
+	struct inode	z_inode;                                     \
+	boolean_t	z_is_mapped;    /* we are mmap'ed */
+#endif
 
 /*
  * Convert between znode pointers and inode pointers
@@ -70,7 +77,14 @@ extern "C" {
 #define	Z_ISDEV(type)	(S_ISCHR(type) || S_ISBLK(type) || S_ISFIFO(type))
 #define	Z_ISDIR(type)	S_ISDIR(type)
 
-#define	zn_has_cached_data(zp)		((zp)->z_is_mapped)
+#if defined(HAVE_FILEMAP_RANGE_HAS_PAGE)
+#define	zn_has_cached_data(zp, start, end) \
+	filemap_range_has_page(ZTOI(zp)->i_mapping, start, end)
+#else
+#define	zn_has_cached_data(zp, start, end) \
+	((zp)->z_is_mapped)
+#endif
+
 #define	zn_flush_cached_data(zp, sync)	write_inode_now(ZTOI(zp), sync)
 #define	zn_rlimit_fsize(zp, uio)	(0)
 

include/os/linux/zfs/sys/zpl.h

@@ -64,7 +64,10 @@ extern int zpl_xattr_security_init(struct inode *ip, struct inode *dip,
     const struct qstr *qstr);
 #if defined(CONFIG_FS_POSIX_ACL)
 #if defined(HAVE_SET_ACL)
-#if defined(HAVE_SET_ACL_USERNS)
+#if defined(HAVE_SET_ACL_IDMAP_DENTRY)
+extern int zpl_set_acl(struct mnt_idmap *idmap, struct dentry *dentry,
+    struct posix_acl *acl, int type);
+#elif defined(HAVE_SET_ACL_USERNS)
 extern int zpl_set_acl(struct user_namespace *userns, struct inode *ip,
     struct posix_acl *acl, int type);
 #elif defined(HAVE_SET_ACL_USERNS_DENTRY_ARG2)
@@ -186,13 +189,15 @@ zpl_dir_emit_dots(struct file *file, zpl_dir_context_t *ctx)
 
 #if defined(HAVE_INODE_OWNER_OR_CAPABLE)
 #define	zpl_inode_owner_or_capable(ns, ip)	inode_owner_or_capable(ip)
-#elif defined(HAVE_INODE_OWNER_OR_CAPABLE_IDMAPPED)
+#elif defined(HAVE_INODE_OWNER_OR_CAPABLE_USERNS)
 #define	zpl_inode_owner_or_capable(ns, ip)	inode_owner_or_capable(ns, ip)
+#elif defined(HAVE_INODE_OWNER_OR_CAPABLE_IDMAP)
+#define	zpl_inode_owner_or_capable(idmap, ip) inode_owner_or_capable(idmap, ip)
 #else
 #error "Unsupported kernel"
 #endif
 
-#ifdef HAVE_SETATTR_PREPARE_USERNS
+#if defined(HAVE_SETATTR_PREPARE_USERNS) || defined(HAVE_SETATTR_PREPARE_IDMAP)
 #define	zpl_setattr_prepare(ns, dentry, ia)	setattr_prepare(ns, dentry, ia)
 #else
 /*

include/sys/arc_impl.h

@@ -30,6 +30,7 @@
 #define	_SYS_ARC_IMPL_H
 
 #include <sys/arc.h>
+#include <sys/multilist.h>
 #include <sys/zio_crypt.h>
 #include <sys/zthr.h>
 #include <sys/aggsum.h>

include/sys/bpobj.h

@@ -87,6 +87,7 @@ int livelist_bpobj_iterate_from_nofree(bpobj_t *bpo, bpobj_itor_t func,
     void *arg, int64_t start);
 
 void bpobj_enqueue_subobj(bpobj_t *bpo, uint64_t subobj, dmu_tx_t *tx);
+void bpobj_prefetch_subobj(bpobj_t *bpo, uint64_t subobj);
 void bpobj_enqueue(bpobj_t *bpo, const blkptr_t *bp, boolean_t bp_freed,
     dmu_tx_t *tx);
 

include/sys/btree.h

@@ -65,7 +65,7 @@ extern "C" {
  * them, and increased memory overhead. Increasing these values results in
  * higher variance in operation time, and reduces memory overhead.
  */
-#define	BTREE_CORE_ELEMS	128
+#define	BTREE_CORE_ELEMS	126
 #define	BTREE_LEAF_SIZE		4096
 
 extern kmem_cache_t *zfs_btree_leaf_cache;
@@ -95,9 +95,6 @@ typedef struct zfs_btree_leaf {
 	uint8_t		btl_elems[];
 } zfs_btree_leaf_t;
 
-#define	BTREE_LEAF_ESIZE	(BTREE_LEAF_SIZE - \
-    offsetof(zfs_btree_leaf_t, btl_elems))
-
 typedef struct zfs_btree_index {
 	zfs_btree_hdr_t	*bti_node;
 	uint32_t	bti_offset;
@@ -109,14 +106,15 @@ typedef struct zfs_btree_index {
 } zfs_btree_index_t;
 
 typedef struct btree {
-	zfs_btree_hdr_t		*bt_root;
+	int (*bt_compar) (const void *, const void *);
-	int64_t			bt_height;
 	size_t			bt_elem_size;
+	size_t			bt_leaf_size;
 	uint32_t		bt_leaf_cap;
+	int32_t			bt_height;
 	uint64_t		bt_num_elems;
 	uint64_t		bt_num_nodes;
+	zfs_btree_hdr_t		*bt_root;
 	zfs_btree_leaf_t	*bt_bulk; // non-null if bulk loading
-	int (*bt_compar) (const void *, const void *);
 } zfs_btree_t;
 
 /*
@@ -132,9 +130,12 @@ void zfs_btree_fini(void);
  * compar - function to compare two nodes, it must return exactly: -1, 0, or +1
  *          -1 for <, 0 for ==, and +1 for >
  * size   - the value of sizeof(struct my_type)
+ * lsize  - custom leaf size
  */
 void zfs_btree_create(zfs_btree_t *, int (*) (const void *, const void *),
     size_t);
+void zfs_btree_create_custom(zfs_btree_t *, int (*)(const void *, const void *),
+    size_t, size_t);
 
 /*
  * Find a node with a matching value in the tree. Returns the matching node

include/sys/dmu.h

@@ -778,6 +778,9 @@ dmu_tx_t *dmu_tx_create(objset_t *os);
 void dmu_tx_hold_write(dmu_tx_t *tx, uint64_t object, uint64_t off, int len);
 void dmu_tx_hold_write_by_dnode(dmu_tx_t *tx, dnode_t *dn, uint64_t off,
     int len);
+void dmu_tx_hold_append(dmu_tx_t *tx, uint64_t object, uint64_t off, int len);
+void dmu_tx_hold_append_by_dnode(dmu_tx_t *tx, dnode_t *dn, uint64_t off,
+    int len);
 void dmu_tx_hold_free(dmu_tx_t *tx, uint64_t object, uint64_t off,
     uint64_t len);
 void dmu_tx_hold_free_by_dnode(dmu_tx_t *tx, dnode_t *dn, uint64_t off,

include/sys/dmu_objset.h

@@ -72,6 +72,10 @@ struct dmu_tx;
  */
 #define	OBJSET_CRYPT_PORTABLE_FLAGS_MASK	(0)
 
+#if defined(__clang__)
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wgnu-variable-sized-type-not-at-end"
+#endif
 typedef struct objset_phys {
 	dnode_phys_t os_meta_dnode;
 	zil_header_t os_zil_header;
@@ -88,6 +92,9 @@ typedef struct objset_phys {
 	char os_pad1[OBJSET_PHYS_SIZE_V3 - OBJSET_PHYS_SIZE_V2 -
 	    sizeof (dnode_phys_t)];
 } objset_phys_t;
+#if defined(__clang__)
+#pragma clang diagnostic pop
+#endif
 
 typedef int (*dmu_objset_upgrade_cb_t)(objset_t *);
 

include/sys/dmu_tx.h

@@ -90,6 +90,7 @@ enum dmu_tx_hold_type {
 	THT_ZAP,
 	THT_SPACE,
 	THT_SPILL,
+	THT_APPEND,
 	THT_NUMTYPES
 };
 

include/sys/dnode.h

@@ -36,6 +36,7 @@
 #include <sys/dmu_zfetch.h>
 #include <sys/zrlock.h>
 #include <sys/multilist.h>
+#include <sys/wmsum.h>
 
 #ifdef	__cplusplus
 extern "C" {
@@ -119,7 +120,11 @@ extern "C" {
 #define	DN_MAX_LEVELS	(DIV_ROUND_UP(DN_MAX_OFFSET_SHIFT - SPA_MINBLOCKSHIFT, \
 	DN_MIN_INDBLKSHIFT - SPA_BLKPTRSHIFT) + 1)
 
-#define	DN_BONUS(dnp)	((void*)((dnp)->dn_bonus + \
+/*
+ * Use the flexible array instead of the fixed length one dn_bonus
+ * to address memcpy/memmove fortify error
+ */
+#define	DN_BONUS(dnp)	((void*)((dnp)->dn_bonus_flexible + \
 	(((dnp)->dn_nblkptr - 1) * sizeof (blkptr_t))))
 #define	DN_MAX_BONUS_LEN(dnp) \
 	((dnp->dn_flags & DNODE_FLAG_SPILL_BLKPTR) ? \
@@ -265,6 +270,10 @@ typedef struct dnode_phys {
 			    sizeof (blkptr_t)];
 			blkptr_t dn_spill;
 		};
+		struct {
+			blkptr_t __dn_ignore4;
+			uint8_t dn_bonus_flexible[];
+		};
 	};
 } dnode_phys_t;
 
@@ -587,10 +596,42 @@ typedef struct dnode_stats {
 	kstat_named_t dnode_move_active;
 } dnode_stats_t;
 
+typedef struct dnode_sums {
+	wmsum_t dnode_hold_dbuf_hold;
+	wmsum_t dnode_hold_dbuf_read;
+	wmsum_t dnode_hold_alloc_hits;
+	wmsum_t dnode_hold_alloc_misses;
+	wmsum_t dnode_hold_alloc_interior;
+	wmsum_t dnode_hold_alloc_lock_retry;
+	wmsum_t dnode_hold_alloc_lock_misses;
+	wmsum_t dnode_hold_alloc_type_none;
+	wmsum_t dnode_hold_free_hits;
+	wmsum_t dnode_hold_free_misses;
+	wmsum_t dnode_hold_free_lock_misses;
+	wmsum_t dnode_hold_free_lock_retry;
+	wmsum_t dnode_hold_free_refcount;
+	wmsum_t dnode_hold_free_overflow;
+	wmsum_t dnode_free_interior_lock_retry;
+	wmsum_t dnode_allocate;
+	wmsum_t dnode_reallocate;
+	wmsum_t dnode_buf_evict;
+	wmsum_t dnode_alloc_next_chunk;
+	wmsum_t dnode_alloc_race;
+	wmsum_t dnode_alloc_next_block;
+	wmsum_t dnode_move_invalid;
+	wmsum_t dnode_move_recheck1;
+	wmsum_t dnode_move_recheck2;
+	wmsum_t dnode_move_special;
+	wmsum_t dnode_move_handle;
+	wmsum_t dnode_move_rwlock;
+	wmsum_t dnode_move_active;
+} dnode_sums_t;
+
 extern dnode_stats_t dnode_stats;
+extern dnode_sums_t dnode_sums;
 
 #define	DNODE_STAT_INCR(stat, val) \
-    atomic_add_64(&dnode_stats.stat.value.ui64, (val));
+    wmsum_add(&dnode_sums.stat, (val))
 #define	DNODE_STAT_BUMP(stat) \
     DNODE_STAT_INCR(stat, 1);
 

include/sys/fs/zfs.h

@@ -1173,6 +1173,7 @@ typedef enum pool_initialize_func {
 	POOL_INITIALIZE_START,
 	POOL_INITIALIZE_CANCEL,
 	POOL_INITIALIZE_SUSPEND,
+	POOL_INITIALIZE_UNINIT,
 	POOL_INITIALIZE_FUNCS
 } pool_initialize_func_t;
 
@@ -1518,6 +1519,7 @@ typedef enum {
 #define	ZFS_ONLINE_UNSPARE	0x2
 #define	ZFS_ONLINE_FORCEFAULT	0x4
 #define	ZFS_ONLINE_EXPAND	0x8
+#define	ZFS_ONLINE_SPARE	0x10
 #define	ZFS_OFFLINE_TEMPORARY	0x1
 
 /*

include/sys/spa.h

@@ -785,6 +785,7 @@ extern int bpobj_enqueue_free_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx);
 #define	SPA_ASYNC_L2CACHE_REBUILD		0x800
 #define	SPA_ASYNC_L2CACHE_TRIM			0x1000
 #define	SPA_ASYNC_REBUILD_DONE			0x2000
+#define	SPA_ASYNC_DETACH_SPARE			0x4000
 
 /* device manipulation */
 extern int spa_vdev_add(spa_t *spa, nvlist_t *nvroot);
@@ -837,7 +838,7 @@ extern kmutex_t spa_namespace_lock;
 #define	SPA_CONFIG_UPDATE_POOL	0
 #define	SPA_CONFIG_UPDATE_VDEVS	1
 
-extern void spa_write_cachefile(spa_t *, boolean_t, boolean_t);
+extern void spa_write_cachefile(spa_t *, boolean_t, boolean_t, boolean_t);
 extern void spa_config_load(void);
 extern nvlist_t *spa_all_configs(uint64_t *);
 extern void spa_config_set(spa_t *spa, nvlist_t *config);
@@ -971,6 +972,8 @@ extern int spa_import_progress_set_state(uint64_t pool_guid,
 /* Pool configuration locks */
 extern int spa_config_tryenter(spa_t *spa, int locks, void *tag, krw_t rw);
 extern void spa_config_enter(spa_t *spa, int locks, const void *tag, krw_t rw);
+extern void spa_config_enter_mmp(spa_t *spa, int locks, const void *tag,
+    krw_t rw);
 extern void spa_config_exit(spa_t *spa, int locks, const void *tag);
 extern int spa_config_held(spa_t *spa, int locks, krw_t rw);
 

include/sys/vdev.h

@@ -147,6 +147,7 @@ extern int vdev_degrade(spa_t *spa, uint64_t guid, vdev_aux_t aux);
 extern int vdev_online(spa_t *spa, uint64_t guid, uint64_t flags,
     vdev_state_t *);
 extern int vdev_offline(spa_t *spa, uint64_t guid, uint64_t flags);
+extern int vdev_remove_wanted(spa_t *spa, uint64_t guid);
 extern void vdev_clear(spa_t *spa, vdev_t *vd);
 
 extern boolean_t vdev_is_dead(vdev_t *vd);
@@ -189,6 +190,8 @@ typedef enum vdev_config_flag {
 	VDEV_CONFIG_MISSING = 1 << 4
 } vdev_config_flag_t;
 
+extern void vdev_post_kobj_evt(vdev_t *vd);
+extern void vdev_clear_kobj_evt(vdev_t *vd);
 extern void vdev_top_config_generate(spa_t *spa, nvlist_t *config);
 extern nvlist_t *vdev_config_generate(spa_t *spa, vdev_t *vd,
     boolean_t getstats, vdev_config_flag_t flags);

include/sys/vdev_impl.h

@@ -69,6 +69,7 @@ extern uint32_t zfs_vdev_async_write_max_active;
  * Virtual device operations
  */
 typedef int	vdev_init_func_t(spa_t *spa, nvlist_t *nv, void **tsd);
+typedef void	vdev_kobj_post_evt_func_t(vdev_t *vd);
 typedef void	vdev_fini_func_t(vdev_t *vd);
 typedef int	vdev_open_func_t(vdev_t *vd, uint64_t *size, uint64_t *max_size,
     uint64_t *ashift, uint64_t *pshift);
@@ -123,6 +124,7 @@ typedef const struct vdev_ops {
 	vdev_config_generate_func_t	*vdev_op_config_generate;
 	vdev_nparity_func_t		*vdev_op_nparity;
 	vdev_ndisks_func_t		*vdev_op_ndisks;
+	vdev_kobj_post_evt_func_t	*vdev_op_kobj_evt_post;
 	char				vdev_op_type[16];
 	boolean_t			vdev_op_leaf;
 } vdev_ops_t;
@@ -435,6 +437,7 @@ struct vdev {
 	boolean_t	vdev_isl2cache;	/* was a l2cache device		*/
 	boolean_t	vdev_copy_uberblocks;  /* post expand copy uberblocks */
 	boolean_t	vdev_resilver_deferred;  /* resilver deferred */
+	boolean_t	vdev_kobj_flag; /* kobj event record */
 	vdev_queue_t	vdev_queue;	/* I/O deadline schedule queue	*/
 	vdev_cache_t	vdev_cache;	/* physical block cache		*/
 	spa_aux_vdev_t	*vdev_aux;	/* for l2cache and spares vdevs	*/

include/sys/vdev_initialize.h

@@ -33,6 +33,7 @@ extern "C" {
 #endif
 
 extern void vdev_initialize(vdev_t *vd);
+extern void vdev_uninitialize(vdev_t *vd);
 extern void vdev_initialize_stop(vdev_t *vd,
     vdev_initializing_state_t tgt_state, list_t *vd_list);
 extern void vdev_initialize_stop_all(vdev_t *vd,

include/sys/zap_impl.h

@@ -66,10 +66,9 @@ typedef struct mzap_phys {
 } mzap_phys_t;
 
 typedef struct mzap_ent {
-	avl_node_t mze_node;
+	uint32_t mze_hash;
-	int mze_chunkid;
+	uint16_t mze_cd; /* copy from mze_phys->mze_cd */
-	uint64_t mze_hash;
+	uint16_t mze_chunkid;
-	uint32_t mze_cd; /* copy from mze_phys->mze_cd */
 } mzap_ent_t;
 
 #define	MZE_PHYS(zap, mze) \
@@ -164,7 +163,7 @@ typedef struct zap {
 			int16_t zap_num_entries;
 			int16_t zap_num_chunks;
 			int16_t zap_alloc_next;
-			avl_tree_t zap_avl;
+			zfs_btree_t zap_tree;
 		} zap_micro;
 	} zap_u;
 } zap_t;
@@ -202,7 +201,7 @@ int zap_lockdir(objset_t *os, uint64_t obj, dmu_tx_t *tx,
     krw_t lti, boolean_t fatreader, boolean_t adding, void *tag, zap_t **zapp);
 void zap_unlockdir(zap_t *zap, void *tag);
 void zap_evict_sync(void *dbu);
-zap_name_t *zap_name_alloc(zap_t *zap, const char *key, matchtype_t mt);
+zap_name_t *zap_name_alloc_str(zap_t *zap, const char *key, matchtype_t mt);
 void zap_name_free(zap_name_t *zn);
 int zap_hashbits(zap_t *zap);
 uint32_t zap_maxcd(zap_t *zap);

include/sys/zfs_context.h

@@ -51,6 +51,7 @@ extern "C" {
 #include <sys/kmem.h>
 #include <sys/kmem_cache.h>
 #include <sys/vmem.h>
+#include <sys/misc.h>
 #include <sys/taskq.h>
 #include <sys/param.h>
 #include <sys/disp.h>

include/sys/zfs_znode.h

@@ -188,7 +188,6 @@ typedef struct znode {
 	boolean_t	z_atime_dirty;	/* atime needs to be synced */
 	boolean_t	z_zn_prefetch;	/* Prefetch znodes? */
 	boolean_t	z_is_sa;	/* are we native sa? */
-	boolean_t	z_is_mapped;	/* are we mmap'ed */
 	boolean_t	z_is_ctldir;	/* are we .zfs entry */
 	boolean_t	z_suspended;	/* extra ref from a suspend? */
 	uint_t		z_blksz;	/* block size in bytes */
@@ -198,6 +197,8 @@ typedef struct znode {
 	uint64_t	z_size;		/* file size (cached) */
 	uint64_t	z_pflags;	/* pflags (cached) */
 	uint32_t	z_sync_cnt;	/* synchronous open count */
+	uint32_t	z_sync_writes_cnt; /* synchronous write count */
+	uint32_t	z_async_writes_cnt; /* asynchronous write count */
 	mode_t		z_mode;		/* mode (cached) */
 	kmutex_t	z_acl_lock;	/* acl data lock */
 	zfs_acl_t	*z_acl_cached;	/* cached acl */
@@ -217,9 +218,9 @@ typedef struct znode {
 
 typedef struct znode_hold {
 	uint64_t	zh_obj;		/* object id */
-	kmutex_t	zh_lock;	/* lock serializing object access */
 	avl_node_t	zh_node;	/* avl tree linkage */
-	zfs_refcount_t	zh_refcount;	/* active consumer reference count */
+	kmutex_t	zh_lock;	/* lock serializing object access */
+	int		zh_refcount;	/* active consumer reference count */
 } znode_hold_t;
 
 static inline uint64_t

include/sys/zrlock.h

@@ -34,9 +34,8 @@ extern "C" {
 
 typedef struct zrlock {
 	kmutex_t zr_mtx;
-	volatile int32_t zr_refcount;
 	kcondvar_t zr_cv;
-	uint16_t zr_pad;
+	volatile int32_t zr_refcount;
 #ifdef	ZFS_DEBUG
 	kthread_t *zr_owner;
 	const char *zr_caller;

lib/libzfs/libzfs.abi

@@ -99,6 +99,7 @@
     <elf-symbol name='sa_validate_shareopts' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
     <elf-symbol name='snapshot_namecheck' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
     <elf-symbol name='unshare_one' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='use_color' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
     <elf-symbol name='zcmd_alloc_dst_nvlist' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
     <elf-symbol name='zcmd_expand_dst_nvlist' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
     <elf-symbol name='zcmd_free_nvlists' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
@@ -378,6 +379,7 @@
     <elf-symbol name='zpool_vdev_path_to_guid' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
     <elf-symbol name='zpool_vdev_remove' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
     <elf-symbol name='zpool_vdev_remove_cancel' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='zpool_vdev_remove_wanted' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
     <elf-symbol name='zpool_vdev_split' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
     <elf-symbol name='zpool_wait' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
     <elf-symbol name='zpool_wait_status' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
@@ -5069,6 +5071,9 @@
       <parameter type-id='9cf59a50'/>
       <return type-id='48b5725f'/>
     </function-decl>
+    <function-decl name='use_color' mangled-name='use_color' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='use_color'>
+      <return type-id='95e97e5e'/>
+    </function-decl>
     <function-decl name='mkdirp' visibility='default' binding='global' size-in-bits='64'>
       <parameter type-id='80f4b756'/>
       <parameter type-id='d50d396c'/>
@@ -5405,7 +5410,8 @@
       <enumerator name='POOL_INITIALIZE_START' value='0'/>
       <enumerator name='POOL_INITIALIZE_CANCEL' value='1'/>
       <enumerator name='POOL_INITIALIZE_SUSPEND' value='2'/>
-      <enumerator name='POOL_INITIALIZE_FUNCS' value='3'/>
+      <enumerator name='POOL_INITIALIZE_UNINIT' value='3'/>
+      <enumerator name='POOL_INITIALIZE_FUNCS' value='4'/>
     </enum-decl>
     <typedef-decl name='pool_initialize_func_t' type-id='5c246ad4' id='7063e1ab'/>
     <enum-decl name='pool_trim_func' id='54ed608a'>
@@ -5858,6 +5864,11 @@
       <parameter type-id='c19b74c3' name='istmp'/>
       <return type-id='95e97e5e'/>
     </function-decl>
+    <function-decl name='zpool_vdev_remove_wanted' mangled-name='zpool_vdev_remove_wanted' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='zpool_vdev_remove_wanted'>
+      <parameter type-id='4c81de99' name='zhp'/>
+      <parameter type-id='80f4b756' name='path'/>
+      <return type-id='95e97e5e'/>
+    </function-decl>
     <function-decl name='zpool_vdev_fault' mangled-name='zpool_vdev_fault' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='zpool_vdev_fault'>
       <parameter type-id='4c81de99' name='zhp'/>
       <parameter type-id='9c313c2d' name='guid'/>
@@ -6098,7 +6109,7 @@
     <array-type-def dimensions='1' type-id='b96825af' size-in-bits='64' id='13339fda'>
       <subrange length='8' type-id='7359adad' id='56e0c0b1'/>
     </array-type-def>
-    <class-decl name='sendflags' size-in-bits='544' is-struct='yes' visibility='default' id='f6aa15be'>
+    <class-decl name='sendflags' size-in-bits='576' is-struct='yes' visibility='default' id='f6aa15be'>
       <data-member access='public' layout-offset-in-bits='0'>
         <var-decl name='verbosity' type-id='95e97e5e' visibility='default'/>
       </data-member>
@@ -6130,24 +6141,27 @@
         <var-decl name='progress' type-id='c19b74c3' visibility='default'/>
       </data-member>
       <data-member access='public' layout-offset-in-bits='320'>
-        <var-decl name='largeblock' type-id='c19b74c3' visibility='default'/>
+        <var-decl name='progressastitle' type-id='c19b74c3' visibility='default'/>
       </data-member>
       <data-member access='public' layout-offset-in-bits='352'>
-        <var-decl name='embed_data' type-id='c19b74c3' visibility='default'/>
+        <var-decl name='largeblock' type-id='c19b74c3' visibility='default'/>
       </data-member>
       <data-member access='public' layout-offset-in-bits='384'>
-        <var-decl name='compress' type-id='c19b74c3' visibility='default'/>
+        <var-decl name='embed_data' type-id='c19b74c3' visibility='default'/>
       </data-member>
       <data-member access='public' layout-offset-in-bits='416'>
-        <var-decl name='raw' type-id='c19b74c3' visibility='default'/>
+        <var-decl name='compress' type-id='c19b74c3' visibility='default'/>
       </data-member>
       <data-member access='public' layout-offset-in-bits='448'>
-        <var-decl name='backup' type-id='c19b74c3' visibility='default'/>
+        <var-decl name='raw' type-id='c19b74c3' visibility='default'/>
       </data-member>
       <data-member access='public' layout-offset-in-bits='480'>
-        <var-decl name='holds' type-id='c19b74c3' visibility='default'/>
+        <var-decl name='backup' type-id='c19b74c3' visibility='default'/>
       </data-member>
       <data-member access='public' layout-offset-in-bits='512'>
+        <var-decl name='holds' type-id='c19b74c3' visibility='default'/>
+      </data-member>
+      <data-member access='public' layout-offset-in-bits='544'>
         <var-decl name='saved' type-id='c19b74c3' visibility='default'/>
       </data-member>
     </class-decl>
@@ -6728,6 +6742,11 @@
       <parameter type-id='95e97e5e'/>
       <return type-id='48b5725f'/>
     </function-decl>
+    <function-decl name='zfs_setproctitle' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='80f4b756'/>
+      <parameter is-variadic='yes'/>
+      <return type-id='48b5725f'/>
+    </function-decl>
     <function-decl name='avl_insert' visibility='default' binding='global' size-in-bits='64'>
       <parameter type-id='a3681dea'/>
       <parameter type-id='eaa32e2f'/>

lib/libzfs/libzfs_dataset.c

@@ -1017,6 +1017,7 @@ zfs_valid_proplist(libzfs_handle_t *hdl, zfs_type_t type, nvlist_t *nvl,
 	nvlist_t *ret;
 	int chosen_normal = -1;
 	int chosen_utf = -1;
+	int set_maxbs = 0;
 
 	if (nvlist_alloc(&ret, NV_UNIQUE_NAME, 0) != 0) {
 		(void) no_memory(hdl);
@@ -1234,12 +1235,17 @@ zfs_valid_proplist(libzfs_handle_t *hdl, zfs_type_t type, nvlist_t *nvl,
 				(void) zfs_error(hdl, EZFS_BADPROP, errbuf);
 				goto error;
 			}
+			/* save the ZFS_PROP_RECORDSIZE during create op */
+			if (zpool_hdl == NULL && prop == ZFS_PROP_RECORDSIZE) {
+				set_maxbs = intval;
+			}
 			break;
 		}
 
 		case ZFS_PROP_SPECIAL_SMALL_BLOCKS:
 		{
-			int maxbs = SPA_OLD_MAXBLOCKSIZE;
+			int maxbs =
+			    set_maxbs == 0 ? SPA_OLD_MAXBLOCKSIZE : set_maxbs;
 			char buf[64];
 
 			if (zpool_hdl != NULL) {

lib/libzfs/libzfs_diff.c

@@ -56,10 +56,10 @@
 #define	ZDIFF_REMOVED	'-'
 #define	ZDIFF_RENAMED	"R"
 
-#define	ZDIFF_ADDED_COLOR ANSI_GREEN
+#define	ZDIFF_ADDED_COLOR    ANSI_GREEN
 #define	ZDIFF_MODIFIED_COLOR ANSI_YELLOW
-#define	ZDIFF_REMOVED_COLOR ANSI_RED
+#define	ZDIFF_REMOVED_COLOR  ANSI_RED
-#define	ZDIFF_RENAMED_COLOR ANSI_BLUE
+#define	ZDIFF_RENAMED_COLOR  ANSI_BOLD_BLUE
 
 /*
  * Given a {dsname, object id}, get the object path

lib/libzfs/libzfs_pool.c

@@ -2224,8 +2224,8 @@ xlate_init_err(int err)
 }
 
 /*
- * Begin, suspend, or cancel the initialization (initializing of all free
+ * Begin, suspend, cancel, or uninit (clear) the initialization (initializing
- * blocks) for the given vdevs in the given pool.
+ * of all free blocks) for the given vdevs in the given pool.
  */
 static int
 zpool_initialize_impl(zpool_handle_t *zhp, pool_initialize_func_t cmd_type,
@@ -2251,11 +2251,16 @@ zpool_initialize_impl(zpool_handle_t *zhp, pool_initialize_func_t cmd_type,
 	    vdev_guids, &errlist);
 
 	if (err != 0) {
-		if (errlist != NULL) {
+		if (errlist != NULL && nvlist_lookup_nvlist(errlist,
-			vd_errlist = fnvlist_lookup_nvlist(errlist,
+		    ZPOOL_INITIALIZE_VDEVS, &vd_errlist) == 0) {
-			    ZPOOL_INITIALIZE_VDEVS);
 			goto list_errors;
 		}
+
+		if (err == EINVAL && cmd_type == POOL_INITIALIZE_UNINIT) {
+			zfs_error_aux(zhp->zpool_hdl, dgettext(TEXT_DOMAIN,
+			    "uninitialize is not supported by kernel"));
+		}
+
 		(void) zpool_standard_error(zhp->zpool_hdl, err,
 		    dgettext(TEXT_DOMAIN, "operation failed"));
 		goto out;
@@ -3051,7 +3056,7 @@ zpool_vdev_online(zpool_handle_t *zhp, const char *path, int flags,
 
 	verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID, &zc.zc_guid) == 0);
 
-	if (avail_spare)
+	if (!(flags & ZFS_ONLINE_SPARE) && avail_spare)
 		return (zfs_error(hdl, EZFS_ISSPARE, msg));
 
 	if ((flags & ZFS_ONLINE_EXPAND ||
@@ -3158,6 +3163,40 @@ zpool_vdev_offline(zpool_handle_t *zhp, const char *path, boolean_t istmp)
 	}
 }
 
+/*
+ * Remove the specified vdev asynchronously from the configuration, so
+ * that it may come ONLINE if reinserted. This is called from zed on
+ * Udev remove event.
+ * Note: We also have a similar function zpool_vdev_remove() that
+ * removes the vdev from the pool.
+ */
+int
+zpool_vdev_remove_wanted(zpool_handle_t *zhp, const char *path)
+{
+	zfs_cmd_t zc = {"\0"};
+	char errbuf[1024];
+	nvlist_t *tgt;
+	boolean_t avail_spare, l2cache;
+	libzfs_handle_t *hdl = zhp->zpool_hdl;
+
+	(void) snprintf(errbuf, sizeof (errbuf),
+	    dgettext(TEXT_DOMAIN, "cannot remove %s"), path);
+
+	(void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
+	if ((tgt = zpool_find_vdev(zhp, path, &avail_spare, &l2cache,
+	    NULL)) == NULL)
+		return (zfs_error(hdl, EZFS_NODEVICE, errbuf));
+
+	zc.zc_guid = fnvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID);
+
+	zc.zc_cookie = VDEV_STATE_REMOVED;
+
+	if (zfs_ioctl(hdl, ZFS_IOC_VDEV_SET_STATE, &zc) == 0)
+		return (0);
+
+	return (zpool_standard_error(hdl, errno, errbuf));
+}
+
 /*
  * Mark the given vdev faulted.
  */

lib/libzfs/libzfs_sendrecv.c

@@ -83,6 +83,9 @@ typedef struct progress_arg {
 	boolean_t pa_parsable;
 	boolean_t pa_estimate;
 	int pa_verbosity;
+	boolean_t pa_astitle;
+	boolean_t pa_progress;
+	uint64_t pa_size;
 } progress_arg_t;
 
 static int
@@ -712,6 +715,7 @@ typedef struct send_dump_data {
 	boolean_t seenfrom, seento, replicate, doall, fromorigin;
 	boolean_t dryrun, parsable, progress, embed_data, std_out;
 	boolean_t large_block, compress, raw, holds;
+	boolean_t progressastitle;
 	int outfd;
 	boolean_t err;
 	nvlist_t *fss;
@@ -904,6 +908,7 @@ send_progress_thread(void *arg)
 	zfs_handle_t *zhp = pa->pa_zhp;
 	uint64_t bytes;
 	uint64_t blocks;
+	uint64_t total = pa->pa_size / 100;
 	char buf[16];
 	time_t t;
 	struct tm *tm;
@@ -922,7 +927,7 @@ send_progress_thread(void *arg)
 			return ((void *)(uintptr_t)err);
 		}
 
-		if (firstloop && !pa->pa_parsable) {
+		if (firstloop && !pa->pa_parsable && pa->pa_progress) {
 			(void) fprintf(stderr,
 			    "TIME       %s   %sSNAPSHOT %s\n",
 			    pa->pa_estimate ? "BYTES" : " SENT",
@@ -934,6 +939,17 @@ send_progress_thread(void *arg)
 		(void) time(&t);
 		tm = localtime(&t);
 
+		if (pa->pa_astitle) {
+			char buf_bytes[16];
+			char buf_size[16];
+			int pct;
+			zfs_nicenum(bytes, buf_bytes, sizeof (buf_bytes));
+			zfs_nicenum(pa->pa_size, buf_size, sizeof (buf_size));
+			pct = (total > 0) ? bytes / total : 100;
+			zfs_setproctitle("sending %s (%d%%: %s/%s)",
+			    zhp->zfs_name, MIN(pct, 100), buf_bytes, buf_size);
+		}
+
 		if (pa->pa_verbosity >= 2 && pa->pa_parsable) {
 			(void) fprintf(stderr,
 			    "%02d:%02d:%02d\t%llu\t%llu\t%s\n",
@@ -950,7 +966,7 @@ send_progress_thread(void *arg)
 			(void) fprintf(stderr, "%02d:%02d:%02d\t%llu\t%s\n",
 			    tm->tm_hour, tm->tm_min, tm->tm_sec,
 			    (u_longlong_t)bytes, zhp->zfs_name);
-		} else {
+		} else if (pa->pa_progress) {
 			zfs_nicebytes(bytes, buf, sizeof (buf));
 			(void) fprintf(stderr, "%02d:%02d:%02d   %5s   %s\n",
 			    tm->tm_hour, tm->tm_min, tm->tm_sec,
@@ -1114,12 +1130,15 @@ dump_snapshot(zfs_handle_t *zhp, void *arg)
 		 * If progress reporting is requested, spawn a new thread to
 		 * poll ZFS_IOC_SEND_PROGRESS at a regular interval.
 		 */
-		if (sdd->progress) {
+		if (sdd->progress || sdd->progressastitle) {
 			pa.pa_zhp = zhp;
 			pa.pa_fd = sdd->outfd;
 			pa.pa_parsable = sdd->parsable;
 			pa.pa_estimate = B_FALSE;
 			pa.pa_verbosity = sdd->verbosity;
+			pa.pa_size = sdd->size;
+			pa.pa_astitle = sdd->progressastitle;
+			pa.pa_progress = sdd->progress;
 
 			if ((err = pthread_create(&tid, NULL,
 			    send_progress_thread, &pa)) != 0) {
@@ -1131,7 +1150,7 @@ dump_snapshot(zfs_handle_t *zhp, void *arg)
 		err = dump_ioctl(zhp, sdd->prevsnap, sdd->prevsnap_obj,
 		    fromorigin, sdd->outfd, flags, sdd->debugnv);
 
-		if (sdd->progress) {
+		if (sdd->progress || sdd->progressastitle) {
 			void *status = NULL;
 			(void) pthread_cancel(tid);
 			(void) pthread_join(tid, &status);
@@ -1462,7 +1481,7 @@ lzc_flags_from_sendflags(const sendflags_t *flags)
 static int
 estimate_size(zfs_handle_t *zhp, const char *from, int fd, sendflags_t *flags,
     uint64_t resumeobj, uint64_t resumeoff, uint64_t bytes,
-    const char *redactbook, char *errbuf)
+    const char *redactbook, char *errbuf, uint64_t *sizep)
 {
 	uint64_t size;
 	FILE *fout = flags->dryrun ? stdout : stderr;
@@ -1470,7 +1489,7 @@ estimate_size(zfs_handle_t *zhp, const char *from, int fd, sendflags_t *flags,
 	int err = 0;
 	pthread_t ptid;
 
-	if (flags->progress) {
+	if (flags->progress || flags->progressastitle) {
 		pa.pa_zhp = zhp;
 		pa.pa_fd = fd;
 		pa.pa_parsable = flags->parsable;
@@ -1489,8 +1508,9 @@ estimate_size(zfs_handle_t *zhp, const char *from, int fd, sendflags_t *flags,
 	err = lzc_send_space_resume_redacted(zhp->zfs_name, from,
 	    lzc_flags_from_sendflags(flags), resumeobj, resumeoff, bytes,
 	    redactbook, fd, &size);
+	*sizep = size;
 
-	if (flags->progress) {
+	if (flags->progress || flags->progressastitle) {
 		void *status = NULL;
 		(void) pthread_cancel(ptid);
 		(void) pthread_join(ptid, &status);
@@ -1505,6 +1525,9 @@ estimate_size(zfs_handle_t *zhp, const char *from, int fd, sendflags_t *flags,
 		}
 	}
 
+	if (!flags->progress && !flags->parsable)
+		return (err);
+
 	if (err != 0) {
 		zfs_error_aux(zhp->zfs_hdl, "%s", strerror(err));
 		return (zfs_error(zhp->zfs_hdl, EZFS_BADBACKUP,
@@ -1638,6 +1661,7 @@ zfs_send_resume_impl(libzfs_handle_t *hdl, sendflags_t *flags, int outfd,
 	uint64_t *redact_snap_guids = NULL;
 	int num_redact_snaps = 0;
 	char *redact_book = NULL;
+	uint64_t size = 0;
 
 	(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
 	    "cannot resume send"));
@@ -1731,7 +1755,7 @@ zfs_send_resume_impl(libzfs_handle_t *hdl, sendflags_t *flags, int outfd,
 		}
 	}
 
-	if (flags->verbosity != 0) {
+	if (flags->verbosity != 0 || flags->progressastitle) {
 		/*
 		 * Some of these may have come from the resume token, set them
 		 * here for size estimate purposes.
@@ -1748,7 +1772,7 @@ zfs_send_resume_impl(libzfs_handle_t *hdl, sendflags_t *flags, int outfd,
 		if (lzc_flags & LZC_SEND_FLAG_SAVED)
 			tmpflags.saved = B_TRUE;
 		error = estimate_size(zhp, fromname, outfd, &tmpflags,
-		    resumeobj, resumeoff, bytes, redact_book, errbuf);
+		    resumeobj, resumeoff, bytes, redact_book, errbuf, &size);
 	}
 
 	if (!flags->dryrun) {
@@ -1758,12 +1782,15 @@ zfs_send_resume_impl(libzfs_handle_t *hdl, sendflags_t *flags, int outfd,
 		 * If progress reporting is requested, spawn a new thread to
 		 * poll ZFS_IOC_SEND_PROGRESS at a regular interval.
 		 */
-		if (flags->progress) {
+		if (flags->progress || flags->progressastitle) {
 			pa.pa_zhp = zhp;
 			pa.pa_fd = outfd;
 			pa.pa_parsable = flags->parsable;
 			pa.pa_estimate = B_FALSE;
 			pa.pa_verbosity = flags->verbosity;
+			pa.pa_size = size;
+			pa.pa_astitle = flags->progressastitle;
+			pa.pa_progress = flags->progress;
 
 			error = pthread_create(&tid, NULL,
 			    send_progress_thread, &pa);
@@ -1780,7 +1807,7 @@ zfs_send_resume_impl(libzfs_handle_t *hdl, sendflags_t *flags, int outfd,
 		if (redact_book != NULL)
 			free(redact_book);
 
-		if (flags->progress) {
+		if (flags->progress || flags->progress) {
 			void *status = NULL;
 			(void) pthread_cancel(tid);
 			(void) pthread_join(tid, &status);
@@ -1790,6 +1817,7 @@ zfs_send_resume_impl(libzfs_handle_t *hdl, sendflags_t *flags, int outfd,
 				(void) snprintf(errbuf, sizeof (errbuf),
 				    dgettext(TEXT_DOMAIN,
 				    "progress thread exited nonzero"));
+				zfs_close(zhp);
 				return (zfs_standard_error(hdl, error, errbuf));
 			}
 		}
@@ -2199,6 +2227,7 @@ zfs_send(zfs_handle_t *zhp, const char *fromsnap, const char *tosnap,
 	sdd.verbosity = flags->verbosity;
 	sdd.parsable = flags->parsable;
 	sdd.progress = flags->progress;
+	sdd.progressastitle = flags->progressastitle;
 	sdd.dryrun = flags->dryrun;
 	sdd.large_block = flags->largeblock;
 	sdd.embed_data = flags->embed_data;
@@ -2410,6 +2439,7 @@ zfs_send_one(zfs_handle_t *zhp, const char *from, int fd, sendflags_t *flags,
 	char *name = zhp->zfs_name;
 	pthread_t ptid;
 	progress_arg_t pa = { 0 };
+	uint64_t size = 0;
 
 	char errbuf[1024];
 	(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
@@ -2492,9 +2522,9 @@ zfs_send_one(zfs_handle_t *zhp, const char *from, int fd, sendflags_t *flags,
 	/*
 	 * Perform size estimate if verbose was specified.
 	 */
-	if (flags->verbosity != 0) {
+	if (flags->verbosity != 0 || flags->progressastitle) {
 		err = estimate_size(zhp, from, fd, flags, 0, 0, 0, redactbook,
-		    errbuf);
+		    errbuf, &size);
 		if (err != 0)
 			return (err);
 	}
@@ -2506,12 +2536,15 @@ zfs_send_one(zfs_handle_t *zhp, const char *from, int fd, sendflags_t *flags,
 	 * If progress reporting is requested, spawn a new thread to poll
 	 * ZFS_IOC_SEND_PROGRESS at a regular interval.
 	 */
-	if (flags->progress) {
+	if (flags->progress || flags->progressastitle) {
 		pa.pa_zhp = zhp;
 		pa.pa_fd = fd;
 		pa.pa_parsable = flags->parsable;
 		pa.pa_estimate = B_FALSE;
 		pa.pa_verbosity = flags->verbosity;
+		pa.pa_size = size;
+		pa.pa_astitle = flags->progressastitle;
+		pa.pa_progress = flags->progress;
 
 		err = pthread_create(&ptid, NULL,
 		    send_progress_thread, &pa);
@@ -2525,7 +2558,7 @@ zfs_send_one(zfs_handle_t *zhp, const char *from, int fd, sendflags_t *flags,
 	err = lzc_send_redacted(name, from, fd,
 	    lzc_flags_from_sendflags(flags), redactbook);
 
-	if (flags->progress) {
+	if (flags->progress || flags->progressastitle) {
 		void *status = NULL;
 		(void) pthread_cancel(ptid);
 		(void) pthread_join(ptid, &status);

lib/libzfs/libzfs_util.c

@@ -2027,7 +2027,7 @@ zfs_version_print(void)
  * Return 1 if the user requested ANSI color output, and our terminal supports
  * it.  Return 0 for no color.
  */
-static int
+int
 use_color(void)
 {
 	static int use_color = -1;
@@ -2073,10 +2073,11 @@ use_color(void)
 }
 
 /*
- * color_start() and color_end() are used for when you want to colorize a block
+ * The functions color_start() and color_end() are used for when you want
- * of text.  For example:
+ * to colorize a block of text.
  *
- * color_start(ANSI_RED_FG)
+ * For example:
+ * color_start(ANSI_RED)
  * printf("hello");
  * printf("world");
  * color_end();
@@ -2084,7 +2085,7 @@ use_color(void)
 void
 color_start(const char *color)
 {
-	if (use_color()) {
+	if (color && use_color()) {
 		fputs(color, stdout);
 		fflush(stdout);
 	}
@@ -2099,7 +2100,9 @@ color_end(void)
 	}
 }
 
-/* printf() with a color.  If color is NULL, then do a normal printf. */
+/*
+ * printf() with a color. If color is NULL, then do a normal printf.
+ */
 int
 printf_color(const char *color, char *format, ...)
 {

lib/libzfs_core/libzfs_core.abi

@@ -272,6 +272,8 @@
     <elf-symbol name='zfs_niceraw' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
     <elf-symbol name='zfs_nicetime' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
     <elf-symbol name='zfs_resolve_shortname' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='zfs_setproctitle' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='zfs_setproctitle_init' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
     <elf-symbol name='zfs_strcmp_pathname' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
     <elf-symbol name='zfs_strip_partition' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
     <elf-symbol name='zfs_strip_path' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
@@ -1724,7 +1726,8 @@
       <enumerator name='POOL_INITIALIZE_START' value='0'/>
       <enumerator name='POOL_INITIALIZE_CANCEL' value='1'/>
       <enumerator name='POOL_INITIALIZE_SUSPEND' value='2'/>
-      <enumerator name='POOL_INITIALIZE_FUNCS' value='3'/>
+      <enumerator name='POOL_INITIALIZE_UNINIT' value='3'/>
+      <enumerator name='POOL_INITIALIZE_FUNCS' value='4'/>
     </enum-decl>
     <typedef-decl name='pool_initialize_func_t' type-id='5c246ad4' id='7063e1ab'/>
     <enum-decl name='pool_trim_func' id='54ed608a'>
@@ -3340,6 +3343,30 @@
       <return type-id='95e97e5e'/>
     </function-decl>
   </abi-instr>
+  <abi-instr address-size='64' path='os/linux/zutil_setproctitle.c' language='LANG_C99'>
+    <function-decl name='warnx' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='80f4b756'/>
+      <parameter is-variadic='yes'/>
+      <return type-id='48b5725f'/>
+    </function-decl>
+    <function-decl name='setenv' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='80f4b756'/>
+      <parameter type-id='80f4b756'/>
+      <parameter type-id='95e97e5e'/>
+      <return type-id='95e97e5e'/>
+    </function-decl>
+    <function-decl name='zfs_setproctitle_init' mangled-name='zfs_setproctitle_init' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='zfs_setproctitle_init'>
+      <parameter type-id='95e97e5e' name='argc'/>
+      <parameter type-id='9b23c9ad' name='argv'/>
+      <parameter type-id='9b23c9ad' name='envp'/>
+      <return type-id='48b5725f'/>
+    </function-decl>
+    <function-decl name='zfs_setproctitle' mangled-name='zfs_setproctitle' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='zfs_setproctitle'>
+      <parameter type-id='80f4b756' name='fmt'/>
+      <parameter is-variadic='yes'/>
+      <return type-id='48b5725f'/>
+    </function-decl>
+  </abi-instr>
   <abi-instr address-size='64' path='zutil_device_path.c' language='LANG_C99'>
     <qualified-type-def type-id='26a90f95' restrict='yes' id='266fe297'/>
     <qualified-type-def type-id='80f4b756' const='yes' id='b99c00c9'/>

lib/libzutil/Makefile.am

@@ -18,6 +18,7 @@ USER_C = \
 
 if BUILD_LINUX
 USER_C += \
+	os/linux/zutil_setproctitle.c \
 	os/linux/zutil_device_path_os.c \
 	os/linux/zutil_import_os.c \
 	os/linux/zutil_compat.c

lib/libzutil/os/linux/zutil_setproctitle.c

@@ -0,0 +1,299 @@
+/*
+ * Copyright © 2013 Guillem Jover <guillem@hadrons.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
+ * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <errno.h>
+#include <stddef.h>
+#include <stdarg.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <err.h>
+#include <unistd.h>
+#include <string.h>
+#include <sys/param.h>
+#include <libzutil.h>
+
+static struct {
+	/* Original value. */
+	const char *arg0;
+
+	/* Title space available. */
+	char *base, *end;
+
+	/* Pointer to original nul character within base. */
+	char *nul;
+
+	boolean_t warned;
+	boolean_t reset;
+	int error;
+} SPT;
+
+#define	LIBBSD_IS_PATHNAME_SEPARATOR(c) ((c) == '/')
+#define	SPT_MAXTITLE 255
+
+extern const char *__progname;
+
+static const char *
+getprogname(void)
+{
+	return (__progname);
+}
+
+static void
+setprogname(const char *progname)
+{
+	size_t i;
+
+	for (i = strlen(progname); i > 0; i--) {
+		if (LIBBSD_IS_PATHNAME_SEPARATOR(progname[i - 1])) {
+			__progname = progname + i;
+			return;
+		}
+	}
+	__progname = progname;
+}
+
+
+static inline size_t
+spt_min(size_t a, size_t b)
+{
+	return ((a < b) ? a : b);
+}
+
+/*
+ * For discussion on the portability of the various methods, see
+ * https://lists.freebsd.org/pipermail/freebsd-stable/2008-June/043136.html
+ */
+static int
+spt_clearenv(void)
+{
+	char **tmp;
+
+	tmp = malloc(sizeof (*tmp));
+	if (tmp == NULL)
+		return (errno);
+
+	tmp[0] = NULL;
+	environ = tmp;
+
+	return (0);
+}
+
+static int
+spt_copyenv(int envc, char *envp[])
+{
+	char **envcopy;
+	char *eq;
+	int envsize;
+	int i, error;
+
+	if (environ != envp)
+		return (0);
+
+	/*
+	 * Make a copy of the old environ array of pointers, in case
+	 * clearenv() or setenv() is implemented to free the internal
+	 * environ array, because we will need to access the old environ
+	 * contents to make the new copy.
+	 */
+	envsize = (envc + 1) * sizeof (char *);
+	envcopy = malloc(envsize);
+	if (envcopy == NULL)
+		return (errno);
+	memcpy(envcopy, envp, envsize);
+
+	error = spt_clearenv();
+	if (error) {
+		environ = envp;
+		free(envcopy);
+		return (error);
+	}
+
+	for (i = 0; envcopy[i]; i++) {
+		eq = strchr(envcopy[i], '=');
+		if (eq == NULL)
+			continue;
+
+		*eq = '\0';
+		if (setenv(envcopy[i], eq + 1, 1) < 0)
+			error = errno;
+		*eq = '=';
+
+		if (error) {
+			environ = envp;
+			free(envcopy);
+			return (error);
+		}
+	}
+
+	/*
+	 * Dispose of the shallow copy, now that we've finished transfering
+	 * the old environment.
+	 */
+	free(envcopy);
+
+	return (0);
+}
+
+static int
+spt_copyargs(int argc, char *argv[])
+{
+	char *tmp;
+	int i;
+
+	for (i = 1; i < argc || (i >= argc && argv[i]); i++) {
+		if (argv[i] == NULL)
+			continue;
+
+		tmp = strdup(argv[i]);
+		if (tmp == NULL)
+			return (errno);
+
+		argv[i] = tmp;
+	}
+
+	return (0);
+}
+
+void
+zfs_setproctitle_init(int argc, char *argv[], char *envp[])
+{
+	char *base, *end, *nul, *tmp;
+	int i, envc, error;
+
+	/* Try to make sure we got called with main() arguments. */
+	if (argc < 0)
+		return;
+
+	base = argv[0];
+	if (base == NULL)
+		return;
+
+	nul = base + strlen(base);
+	end = nul + 1;
+
+	for (i = 0; i < argc || (i >= argc && argv[i]); i++) {
+		if (argv[i] == NULL || argv[i] != end)
+			continue;
+
+		end = argv[i] + strlen(argv[i]) + 1;
+	}
+
+	for (i = 0; envp[i]; i++) {
+		if (envp[i] != end)
+			continue;
+
+		end = envp[i] + strlen(envp[i]) + 1;
+	}
+	envc = i;
+
+	SPT.arg0 = strdup(argv[0]);
+	if (SPT.arg0 == NULL) {
+		SPT.error = errno;
+		return;
+	}
+
+	tmp = strdup(getprogname());
+	if (tmp == NULL) {
+		SPT.error = errno;
+		return;
+	}
+	setprogname(tmp);
+
+	error = spt_copyenv(envc, envp);
+	if (error) {
+		SPT.error = error;
+		return;
+	}
+
+	error = spt_copyargs(argc, argv);
+	if (error) {
+		SPT.error = error;
+		return;
+	}
+
+	SPT.nul  = nul;
+	SPT.base = base;
+	SPT.end  = end;
+}
+
+void
+zfs_setproctitle(const char *fmt, ...)
+{
+	/* Use buffer in case argv[0] is passed. */
+	char buf[SPT_MAXTITLE + 1];
+	va_list ap;
+	char *nul;
+	int len;
+	if (SPT.base == NULL) {
+		if (!SPT.warned) {
+			warnx("setproctitle not initialized, please"
+			    "call zfs_setproctitle_init()");
+			SPT.warned = B_TRUE;
+		}
+		return;
+	}
+
+	if (fmt) {
+		if (fmt[0] == '-') {
+			/* Skip program name prefix. */
+			fmt++;
+			len = 0;
+		} else {
+			/* Print program name heading for grep. */
+			snprintf(buf, sizeof (buf), "%s: ", getprogname());
+			len = strlen(buf);
+		}
+
+		va_start(ap, fmt);
+		len += vsnprintf(buf + len, sizeof (buf) - len, fmt, ap);
+		va_end(ap);
+	} else {
+		len = snprintf(buf, sizeof (buf), "%s", SPT.arg0);
+	}
+
+	if (len <= 0) {
+		SPT.error = errno;
+		return;
+	}
+
+	if (!SPT.reset) {
+		memset(SPT.base, 0, SPT.end - SPT.base);
+		SPT.reset = B_TRUE;
+	} else {
+		memset(SPT.base, 0, spt_min(sizeof (buf), SPT.end - SPT.base));
+	}
+
+	len = spt_min(len, spt_min(sizeof (buf), SPT.end - SPT.base) - 1);
+	memcpy(SPT.base, buf, len);
+	nul = SPT.base + len;
+
+	if (nul < SPT.nul) {
+		*SPT.nul = '.';
+	} else if (nul == SPT.nul && nul + 1 < SPT.end) {
+		*SPT.nul = ' ';
+		*++nul = '\0';
+	}
+}

man/man4/zfs.4

@@ -15,7 +15,7 @@
 .\" own identifying information:
 .\" Portions Copyright [yyyy] [name of copyright owner]
 .\"
-.Dd June 1, 2021
+.Dd January 10, 2023
 .Dt ZFS 4
 .Os
 .
@@ -233,6 +233,12 @@ relative to the pool.
 Make some blocks above a certain size be gang blocks.
 This option is used by the test suite to facilitate testing.
 .
+.It Sy zfs_default_bs Ns = Ns Sy 9 Po 512 B Pc Pq int
+Default dnode block size as a power of 2.
+.
+.It Sy zfs_default_ibs Ns = Ns Sy 17 Po 128 KiB Pc Pq int
+Default dnode indirect block size as a power of 2.
+.
 .It Sy zfs_history_output_max Ns = Ns Sy 1048576 Ns B Ns B Po 1MB Pc Pq int
 When attempting to log an output nvlist of an ioctl in the on-disk history,
 the output will not be stored if it is larger than this size (in bytes).
@@ -1706,7 +1712,7 @@ completes in order to verify the checksums of all blocks which have been
 resilvered.
 This is enabled by default and strongly recommended.
 .
-.It Sy zfs_rebuild_vdev_limit Ns = Ns Sy 33554432 Ns B Po 32MB Pc Pq ulong
+.It Sy zfs_rebuild_vdev_limit Ns = Ns Sy 67108864 Ns B Po 64 MiB Pc Pq ulong
 Maximum amount of I/O that can be concurrently issued for a sequential
 resilver per leaf device, given in bytes.
 .
@@ -1825,6 +1831,13 @@ When we cross this limit from above it is because we are issuing verification I/
 In this case (unless the metadata scan is done) we stop issuing verification I/O
 and start scanning metadata again until we get to the hard limit.
 .
+.It Sy zfs_scan_report_txgs Ns = Ns Sy 0 Ns | Ns 1 Pq uint
+When reporting resilver throughput and estimated completion time use the
+performance observed over roughly the last
+.Sy zfs_scan_report_txgs
+TXGs.
+When set to zero performance is calculated over the time between checkpoints.
+.
 .It Sy zfs_scan_strict_mem_lim Ns = Ns Sy 0 Ns | Ns 1 Pq int
 Enforce tight memory limits on pool scans when a sequential scan is in progress.
 When disabled, the memory limit may be exceeded by fast disks.
@@ -1833,7 +1846,7 @@ When disabled, the memory limit may be exceeded by fast disks.
 Freezes a scrub/resilver in progress without actually pausing it.
 Intended for testing/debugging.
 .
-.It Sy zfs_scan_vdev_limit Ns = Ns Sy 4194304 Ns B Po 4MB Pc Pq int
+.It Sy zfs_scan_vdev_limit Ns = Ns Sy 16777216 Ns B Po 16 MiB Pc Pq int
 Maximum amount of data that can be concurrently issued at once for scrubs and
 resilvers per leaf device, given in bytes.
 .
@@ -2126,6 +2139,13 @@ On very fragmented pools, lowering this
 .Pq typically to Sy 36kB
 can improve performance.
 .
+.It Sy zil_min_commit_timeout Ns = Ns Sy 5000 Pq u64
+This sets the minimum delay in nanoseconds ZIL care to delay block commit,
+waiting for more records.
+If ZIL writes are too fast, kernel may not be able sleep for so short interval,
+increasing log latency above allowed by
+.Sy zfs_commit_timeout_pct .
+.
 .It Sy zil_nocacheflush Ns = Ns Sy 0 Ns | Ns 1 Pq int
 Disable the cache flush commands that are normally sent to disk by
 the ZIL after an LWB write has completed.