update ZFS submodule to 2.0.6

Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>

Makefile

@@ -6,18 +6,28 @@ ZFSPKGVER != dpkg-parsechangelog -l ${ZFSPKG}/changelog -Sversion
 ZFSDIR=zfs-linux_${ZFSVER}
 ZFSSRC=upstream
 
-ZFS_DEB1= libnvpair2linux_${ZFSPKGVER}_amd64.deb
-ZFS_DEB2= 					\
-libuutil2linux_${ZFSPKGVER}_amd64.deb		\
-libzfs3linux_${ZFSPKGVER}_amd64.deb		\
+ZFS_DEB1= libnvpair3linux_${ZFSPKGVER}_amd64.deb
+
+ZFS_DEB_BINARY =				\
+libpam-zfs_${ZFSPKGVER}_amd64.deb		\
+libuutil3linux_${ZFSPKGVER}_amd64.deb		\
+libzfs4linux_${ZFSPKGVER}_amd64.deb		\
+libzfsbootenv1linux_${ZFSPKGVER}_amd64.deb	\
+libzpool4linux_${ZFSPKGVER}_amd64.deb		\
+zfs-test_${ZFSPKGVER}_amd64.deb			\
+zfsutils-linux_${ZFSPKGVER}_amd64.deb		\
+zfs-zed_${ZFSPKGVER}_amd64.deb
+
+ZFS_DBG_DEBS = $(patsubst %_${ZFSPKGVER}_amd64.deb, %-dbgsym_${ZFSPKGVER}_amd64.deb, ${ZFS_DEB1} ${ZFS_DEB_BINARY})
+
+ZFS_DEB2= ${ZFS_DEB_BINARY}			\
 libzfslinux-dev_${ZFSPKGVER}_amd64.deb		\
-libzpool3linux_${ZFSPKGVER}_amd64.deb		\
-zfs-dbg_${ZFSPKGVER}_amd64.deb			\
-zfs-zed_${ZFSPKGVER}_amd64.deb			\
-zfs-initramfs_${ZFSPKGVER}_all.deb		\
-zfs-test_${ZFSPKGVER}_amd64.deb		\
-zfsutils-linux_${ZFSPKGVER}_amd64.deb
-ZFS_DEBS= $(ZFS_DEB1) $(ZFS_DEB2)
+python3-pyzfs_${ZFSPKGVER}_amd64.deb		\
+pyzfs-doc_${ZFSPKGVER}_all.deb			\
+spl_${ZFSPKGVER}_all.deb			\
+zfs-initramfs_${ZFSPKGVER}_all.deb
+ZFS_DEBS= ${ZFS_DEB1} ${ZFS_DEB2} ${ZFS_DBG_DEBS}
+
 ZFS_DSC = zfs-linux_${ZFSPKGVER}.dsc
 
 all: deb
@@ -30,7 +40,7 @@ dsc: ${ZFS_DSC}
 .PHONY: kernel
 kernel: dsc
 	dpkg-source -x ${ZFS_DSC} ../pkg-zfs
-	$(MAKE) -C ../pkg-zfs -f debian/rules adapt_meta_file
+	${MAKE} -C ../pkg-zfs -f debian/rules adapt_meta_file
 
 .PHONY: dinstall
 dinstall: ${DEBS}
@@ -38,13 +48,13 @@ dinstall: ${DEBS}
 
 .PHONY: submodule
 submodule:
-	test -f "$(ZFSSRC)/README.md" || git submodule update --init
-$(ZFSSRC)/README.md: submodule
+	test -f "${ZFSSRC}/README.md" || git submodule update --init
+${ZFSSRC}/README.md: submodule
 
 .PHONY: zfs
-zfs: $(ZFS_DEBS)
-$(ZFS_DEB2): $(ZFS_DEB1)
-$(ZFS_DEB1): ${ZFSDIR}
+zfs: ${ZFS_DEBS}
+${ZFS_DEB2}: ${ZFS_DEB1}
+${ZFS_DEB1}: ${ZFSDIR}
 	cd ${ZFSDIR}; dpkg-buildpackage -b -uc -us
 	lintian ${ZFS_DEBS}
 
@@ -53,7 +63,7 @@ ${ZFS_DSC}: ${ZFSDIR}
 	cd ${ZFSDIR}; dpkg-buildpackage -S -uc -us -d
 	lintian $@
 
-${ZFSDIR}: $(ZFSSRC)/README.md $(ZFSSRC) ${ZFSPKG}
+${ZFSDIR}: ${ZFSSRC}/README.md ${ZFSSRC} ${ZFSPKG}
 	rm -rf ${ZFSDIR} ${ZFSDIR}.tmp
 	cp -a ${ZFSSRC} ${ZFSDIR}.tmp
 	cp -a ${ZFSPKG} ${ZFSDIR}.tmp/debian
@@ -69,4 +79,4 @@ distclean: clean
 
 .PHONY: upload
 upload: ${DEBS}
-	tar -cf - ${DEBS} | ssh repoman@repo.proxmox.com -- upload --product pve,pmg --dist buster --arch amd64
+	tar -cf - ${DEBS} | ssh repoman@repo.proxmox.com -- upload --product pve,pmg,pbs --dist bullseye --arch amd64

debian/changelog

@@ -1,3 +1,31 @@
+zfs-linux (2.0.6-pve1) bullseye; urgency=medium
+
+  * update ZFS to 2.0.6
+
+ -- Proxmox Support Team <support@proxmox.com>  Tue, 28 Sep 2021 07:36:23 +0200
+
+zfs-linux (2.0.5-pve1) bullseye; urgency=medium
+
+  * update ZFS to 2.0.5
+
+  * do not restart most services upon upgrade
+
+  * add a script and cronjob for regular trimming of pools
+
+ -- Proxmox Support Team <support@proxmox.com>  Fri, 09 Jul 2021 18:23:58 +0200
+
+zfs-linux (2.0.4-pve1) pve pmg; urgency=medium
+
+  * update ZFS to 2.0.4
+
+ -- Proxmox Support Team <support@proxmox.com>  Thu, 18 Mar 2021 13:31:18 +0100
+
+zfs-linux (2.0.3-pve2) pve pmg; urgency=medium
+
+  * match package names to the ones used by Debian
+
+ -- Proxmox Support Team <support@proxmox.com>  Thu, 25 Feb 2021 13:06:07 +0100
+
 zfs-linux (2.0.3-pve1) pve pmg; urgency=medium
 
   * buildsys: make libpam-zfs a separate package

debian/compat

@@ -1 +0,0 @@
-10

debian/control

@@ -2,7 +2,8 @@ Source: zfs-linux
 Section: contrib/kernel
 Priority: optional
 Maintainer: Proxmox Support Team <support@proxmox.com>
-Build-Depends: debhelper (>= 10~),
+Build-Depends: abigail-tools,
+               debhelper-compat (= 12),
                dh-python,
                libblkid-dev,
                libelf-dev,
@@ -16,17 +17,17 @@ Build-Depends: debhelper (>= 10~),
                python3-all-dev,
                uuid-dev,
                zlib1g-dev
-Standards-Version: 4.5.0
+Standards-Version: 4.5.1
 Homepage: https://www.zfsonlinux.org/
 Vcs-Git: https://git.proxmox.com/git/zfsonlinux.git
 Vcs-Browser: https://git.proxmox.com/?p=zfsonlinux.git;a=summary
 
-Package: libnvpair2linux
+Package: libnvpair3linux
 Section: contrib/libs
 Architecture: linux-any
 Depends: ${misc:Depends}, ${shlibs:Depends}
-Breaks: libnvpair1, libnvpair1linux
-Replaces: libnvpair1, libnvpair1linux
+Breaks: libnvpair1, libnvpair1linux, libnvpair2linux, libnvpair3
+Replaces: libnvpair1, libnvpair1linux, libnvpair2linux, libnvpair3
 Description: Solaris name-value library for Linux
  This library provides routines for packing and unpacking nv pairs for
  transporting data across process boundaries, transporting between
@@ -44,12 +45,12 @@ Description: PAM module for managing encryption keys for ZFS
  This provides a Pluggable Authentication Module (PAM) that automatically
  unlocks encrypted ZFS datasets upon login.
 
-Package: libuutil2linux
+Package: libuutil3linux
 Section: contrib/libs
 Architecture: linux-any
 Depends: ${misc:Depends}, ${shlibs:Depends}
-Breaks: libuutil1, libuutil1linux
-Replaces: libuutil1, libuutil1linux
+Breaks: libuutil1, libuutil1linux, libuutil2linux, libuutil3
+Replaces: libuutil1, libuutil1linux, libuutil2linux, libuutil3
 Description: Solaris userland utility library for Linux
  This library provides a variety of glue functions for ZFS on Linux:
   * libspl: The Solaris Porting Layer userland library, which provides APIs
@@ -64,26 +65,27 @@ Description: Solaris userland utility library for Linux
 Package: libzfslinux-dev
 Section: contrib/libdevel
 Architecture: linux-any
-Depends: libnvpair2linux (= ${binary:Version}),
-         libuutil2linux (= ${binary:Version}),
-         libzfs3linux (= ${binary:Version}),
+Depends: libssl-dev | libssl1.0-dev,
+         libnvpair3linux (= ${binary:Version}),
+         libuutil3linux (= ${binary:Version}),
+         libzfs4linux (= ${binary:Version}),
          libzfsbootenv1linux (= ${binary:Version}),
-         libzpool3linux (= ${binary:Version}),
+         libzpool4linux (= ${binary:Version}),
          ${misc:Depends}
 Provides: libnvpair-dev, libuutil-dev
 Description: OpenZFS filesystem development files for Linux
  Header files and static libraries for compiling software against
  libraries of OpenZFS filesystem.
  .
- This package includes the development files of libnvpair2, libuutil2,
- libzpool3 and libzfs3.
+ This package includes the development files of libnvpair3, libuutil3,
+ libzpool4 and libzfs4.
 
-Package: libzfs3linux
+Package: libzfs4linux
 Section: contrib/libs
 Architecture: linux-any
 Depends: ${misc:Depends}, ${shlibs:Depends}
-Breaks: libzfs2, libzfs2linux
-Replaces: libzfs2, libzfs2linux
+Breaks: libzfs2, libzfs2linux, libzfs3linux, libzfs4
+Replaces: libzfs2, libzfs2linux, libzfs3linux, libzfs4
 Description: OpenZFS filesystem library for Linux
  OpenZFS is a storage platform that encompasses the functionality of
  traditional filesystems and volume managers. It supports data checksums,
@@ -95,6 +97,8 @@ Package: libzfsbootenv1linux
 Section: contrib/libs
 Architecture: linux-any
 Depends: ${misc:Depends}, ${shlibs:Depends}
+Breaks: libzfs2, libzfs4
+Replaces: libzfs2, libzfs4
 Description: OpenZFS filesystem library for Linux
  OpenZFS is a storage platform that encompasses the functionality of
  traditional filesystems and volume managers. It supports data checksums,
@@ -102,12 +106,12 @@ Description: OpenZFS filesystem library for Linux
  .
  The zfsbootenv library provides support for modifying ZFS label information.
 
-Package: libzpool3linux
+Package: libzpool4linux
 Section: contrib/libs
 Architecture: linux-any
 Depends: ${misc:Depends}, ${shlibs:Depends}
-Breaks: libzpool2, libzpool2linux
-Replaces: libzpool2, libzpool2linux
+Breaks: libzpool2, libzpool2linux, libzpool3linux, libzpool4
+Replaces: libzpool2, libzpool2linux, libzpool3linux, libzpool4
 Description: OpenZFS pool library for Linux
  OpenZFS is a storage platform that encompasses the functionality of
  traditional filesystems and volume managers. It supports data checksums,
@@ -205,6 +209,11 @@ Description: OpenZFS Event Daemon
  traditional filesystems and volume managers. It supports data checksums,
  compression, encryption, snapshots, and more.
  .
+ ZED (ZFS Event Daemon) monitors events generated by the ZFS kernel
+ module. When a zevent (ZFS Event) is posted, ZED will run any ZEDLETs
+ (ZFS Event Daemon Linkage for Executable Tasks) that have been enabled
+ for the corresponding zevent class.
+ .
  This package provides the OpenZFS Event Daemon (zed).
 
 Package: zfs-test
@@ -238,25 +247,6 @@ Description: OpenZFS test infrastructure and support scripts
  testing and validating a system using OpenZFS. It is entirely optional
  and should only be installed and used in test environments.
 
-Package: zfs-dbg
-Section: contrib/debug
-Priority: optional
-Architecture: linux-any
-Depends: libnvpair2linux (= ${binary:Version}),
-         libuutil2linux (= ${binary:Version}),
-         libzfs3linux (= ${binary:Version}),
-         libzpool3linux (= ${binary:Version}),
-         zfs-zed (= ${binary:Version}),
-         zfsutils-linux (= ${binary:Version}),
-         ${misc:Depends}
-Description: Debugging symbols for OpenZFS userland libraries and tools
- OpenZFS is a storage platform that encompasses the functionality of
- traditional filesystems and volume managers. It supports data checksums,
- compression, encryption, snapshots, and more.
- .
- This package contains the debugging symbols for libzpool3linux, libzfs3linux,
- libnvpair2linux, libuutil2linux, zfs-zed and zfsutils-linux.
-
 Package: spl
 Section: contrib/metapackages
 Architecture: all
@@ -275,3 +265,17 @@ Description: Solaris Porting Layer user-space utilities for Linux (dummy)
  to Linux primitives.
  .
  This is a transitional dummy package. It can safely be removed.
+
+Package: zfs-dbg
+Section: contrib/metapackages
+Architecture: all
+Suggests: libnvpair3linux-dbgsym,
+         libpam-zfs-dbgsym,
+         libuutil3linux-dbgsym,
+         libzfs4linux-dbgsym,
+         libzfsbootenv1linux-dbgsym,
+         libzpool4linux-dbgsym,
+         zfs-test-dbgsym,
+         zfsutils-linux-dbgsym,
+         zfs-zed-dbgsym,
+Description: Transitional package. It can be safely removed.

debian/libnvpair2linux.lintian-overrides

@@ -1 +0,0 @@
-libnvpair2linux: package-name-doesnt-match-sonames

debian/libnvpair3linux.lintian-overrides

@@ -0,0 +1 @@
+package-name-doesnt-match-sonames

debian/libuutil2linux.lintian-overrides

@@ -1 +0,0 @@
-libuutil2linux: package-name-doesnt-match-sonames

debian/libuutil3linux.lintian-overrides

@@ -0,0 +1 @@
+package-name-doesnt-match-sonames

debian/libzfs3linux.lintian-overrides

@@ -1 +0,0 @@
-libzfs3linux: package-name-doesnt-match-sonames

debian/libzfs4linux.lintian-overrides

@@ -0,0 +1 @@
+package-name-doesnt-match-sonames

debian/libzfsbootenv1linux.lintian-overrides

@@ -1,2 +1,2 @@
-libzfsbootenv1linux: package-name-doesnt-match-sonames
-libzfsbootenv1linux: extra-license-file usr/share/doc/libzfsbootenv1linux/LICENSE.gz
+package-name-doesnt-match-sonames
+extra-license-file usr/share/doc/libzfsbootenv1linux/LICENSE.gz

debian/libzpool3linux.lintian-overrides

@@ -1 +0,0 @@
-libzpool3linux: package-name-doesnt-match-sonames

debian/libzpool4linux.lintian-overrides

@@ -0,0 +1 @@
+package-name-doesnt-match-sonames

debian/rules

@@ -29,13 +29,13 @@ override_dh_auto_configure:
 	  --bindir=/usr/bin \
 	  --sbindir=/sbin \
 	  --libdir=/lib/"$(DEB_HOST_MULTIARCH)" \
-	  --with-pkgconfigdir='/usr/lib/$(DEB_HOST_MULTIARCH)/pkgconfig' \
 	  --with-udevdir=/lib/udev \
 	  --with-zfsexecdir=/usr/lib/zfs-linux \
 	  --enable-systemd \
 	  --enable-pyzfs \
 	  --with-python=python3 \
 	  --with-pammoduledir='/lib/$(DEB_HOST_MULTIARCH)/security' \
+	  --with-pkgconfigdir='/usr/lib/$(DEB_HOST_MULTIARCH)/pkgconfig' \
 	  --with-systemdunitdir=/lib/systemd/system \
 	  --with-systemdpresetdir=/lib/systemd/system-preset \
 	  --with-systemdgeneratordir=/lib/systemd/system-generators \
@@ -47,6 +47,12 @@ override_dh_auto_configure:
 	done
 
 override_dh_auto_test:
+override_dh_auto_test:
+ifeq (amd64,$(DEB_HOST_ARCH))
+	# Upstream provides an ABI guarantee that we validate here
+	$(MAKE) checkabi
+endif
+
 	# The dh_auto_test rule is disabled because
 	# `make check` cannot run in an unprivileged build environment.
 
@@ -84,16 +90,9 @@ override_dh_python3:
 
 override_dh_makeshlibs:
 	dh_makeshlibs -a -V
-ifeq ($(BUILD_UDEB), true)
-	dh_makeshlibs -V -plibnvpair1linux
-	dh_makeshlibs -V -plibuutil1linux
-	dh_makeshlibs -V -plibzfs2linux
-	dh_makeshlibs -V -plibzpool2linux
-	dh_makeshlibs -V -pzfsutils-linux
-endif
 
 override_dh_strip:
-	dh_strip --dbg-package=zfs-dbg
+	dh_strip --dbgsym-migration='zfs-dbg (<< 2.0.4~)'
 
 override_dh_auto_clean:
 	find . -name .gitignore -delete
@@ -101,11 +100,21 @@ override_dh_auto_clean:
 	dh_auto_clean
 	@if test -e META.orig; then mv META.orig META; fi
 
+override_dh_install:
+	find debian/tmp/lib -name *.la -delete
+	dh_install
+
 override_dh_missing:
-	find . -name lib*.la -delete
-	rm debian/tmp/lib/$(DEB_HOST_MULTIARCH)/security/pam_zfs_key.la
 	dh_missing --fail-missing
 
+override_dh_installsystemd:
+	# these to lines prevent the restarting of all systemd services, except
+	# zfs-zed - they should not be restarted (importing, mounting, creating
+	# links in /dev, and can cause erros in the log
+	# (upon major.minor change)
+	dh_installsystemd --no-stop-on-upgrade -X zfs-zed.service
+	dh_installsystemd --name zfs-zed
+
 override_dh_installdocs:
 	dh_installdocs
 ifeq (,$(findstring nodoc, $(DEB_BUILD_OPTIONS)))

debian/tree/zfsutils-linux/usr/lib/zfs-linux/scrub

@@ -1,12 +1,45 @@
 #!/bin/sh -eu
 
-# Scrub all healthy pools that are not already scrubbing.
+# directly exit successfully when zfs module is not loaded
+if ! [ -d /sys/module/zfs ]; then
+	exit 0
+fi
+
+# [auto] / enable / disable
+PROPERTY_NAME="org.debian:periodic-scrub"
+
+get_property () {
+	# Detect the ${PROPERTY_NAME} property on a given pool.
+	# We are abusing user-defined properties on the root dataset,
+	# since they're not available on pools https://github.com/openzfs/zfs/pull/11680
+	# TODO: use zpool user-defined property when such feature is available.
+	pool="$1"
+	zfs get -H -o value "${PROPERTY_NAME}" "${pool}" 2>/dev/null || return 1
+}
+
+scrub_if_not_scrub_in_progress () {
+	pool="$1"
+	if ! zpool status "${pool}" | grep -q "scrub in progress"; then
+		# Ignore errors and continue with scrubbing other pools.
+		zpool scrub "${pool}" || true
+	fi
+}
+
+# Scrub all healthy pools that are not already scrubbing as per their configs.
 zpool list -H -o health,name 2>&1 | \
-	awk 'BEGIN {FS="\t"} {if ($1 ~ /^ONLINE/) print $2}' | \
+	awk -F'\t' '$1 == "ONLINE" {print $2}' | \
 while read pool
 do
-	if ! zpool status "$pool" | grep -q "scrub in progress"
-	then
-		zpool scrub "$pool"
+	# read user-defined config
+	ret=$(get_property "${pool}")
+	if [ $? -ne 0 ] || [ "disable" = "${ret}" ]; then
+		:
+	elif [ "-" = "${ret}" ] || [ "auto" = "${ret}" ] || [ "enable" = "${ret}" ]; then
+		scrub_if_not_scrub_in_progress "${pool}"
+	else
+		cat > /dev/stderr <<EOF
+$0: [WARNING] illegal value "${ret}" for property "${PROPERTY_NAME}" of ZFS dataset "${pool}".
+$0: Acceptable choices for this property are: auto, enable, disable. The default is auto.
+EOF
 	fi
 done

debian/tree/zfsutils-linux/usr/lib/zfs-linux/trim

@@ -0,0 +1,60 @@
+#!/bin/sh -eu
+
+# directly exit successfully when zfs module is not loaded
+if ! [ -d /sys/module/zfs ]; then
+	exit 0
+fi
+
+# [auto] / enable / disable
+PROPERTY_NAME="org.debian:periodic-trim"
+
+get_property () {
+	# Detect the ${PROPERTY_NAME} property on a given pool.
+	# We are abusing user-defined properties on the root dataset,
+	# since they're not available on pools https://github.com/openzfs/zfs/pull/11680
+	# TODO: use zpool user-defined property when such feature is available.
+	pool="$1"
+	zfs get -H -o value "${PROPERTY_NAME}" "${pool}" 2>/dev/null || return 1
+}
+
+trim_if_not_already_trimming () {
+	pool="$1"
+	if ! zpool status "${pool}" | grep -q "trimming"; then
+		# Ignore errors (i.e. HDD pools),
+		# and continue with trimming other pools.
+		zpool trim "${pool}" || true
+	fi
+}
+
+zpool_is_nvme_only () {
+	zpool=$1
+	# get a list of devices attached to the specified zpool
+	zpool list -vHPL "${zpool}" |
+		awk -F'\t' '$2 ~ /^\/dev\// {
+			if($2 !~ /^\/dev\/nvme/)
+				exit 1
+		}'
+}
+
+# TRIM all healthy pools that are not already trimming as per their configs.
+zpool list -H -o health,name 2>&1 | \
+	awk -F'\t' '$1 == "ONLINE" {print $2}' | \
+while read pool
+do
+	# read user-defined config
+	ret=$(get_property "${pool}")
+	if [ $? -ne 0 ] || [ "disable" = "${ret}" ]; then
+		:
+	elif [ "enable" = "${ret}" ]; then
+		trim_if_not_already_trimming "${pool}"
+	elif [ "-" = "${ret}" ] || [ "auto" = "${ret}" ]; then
+		if zpool_is_nvme_only "${pool}"; then
+			trim_if_not_already_trimming "${pool}"
+		fi
+	else
+		cat > /dev/stderr <<EOF
+$0: [WARNING] illegal value "${ret}" for property "${PROPERTY_NAME}" of ZFS dataset "${pool}".
+$0: Acceptable choices for this property are: auto, enable, disable. The default is auto.
+EOF
+	fi
+done

debian/zfs-initramfs.triggers

@@ -1 +0,0 @@
-activate update-initramfs

debian/zfs-test.lintian-overrides

@@ -1 +1,13 @@
-zfs-test: arch-dependent-file-in-usr-share
+arch-dependent-file-in-usr-share
+script-not-executable usr/share/zfs/common.sh
+command-in-sbin-has-manpage-in-incorrect-section
+arch-dep-package-has-big-usr-share
+manpage-without-executable
+national-encoding usr/share/zfs/zfs-tests/tests/functional/channel_program/lua_core/tst.lib_table.lua
+executable-not-elf-or-script usr/share/zfs/zfs-tests/tests/functional/cli_root/zfs_jail/jail.conf
+script-not-executable usr/share/zfs/zfs-tests/include/default.cfg
+script-not-executable usr/share/zfs/zfs-tests/tests/functional/cli_root/zfs_wait/zfs_wait.kshlib
+script-not-executable usr/share/zfs/zfs-tests/tests/functional/cli_root/zpool_wait/zpool_wait.kshlib
+script-not-executable usr/share/zfs/zfs-tests/tests/functional/persist_l2arc/persist_l2arc.cfg
+script-not-executable usr/share/zfs/zfs-tests/tests/functional/redacted_send/redacted.kshlib
+package-contains-documentation-outside-usr-share-doc usr/share/zfs/zfs-tests/*

debian/zfs-zed.lintian-overrides

@@ -0,0 +1,4 @@
+
+script-not-executable
+# https://github.com/zfsonlinux/zfs/issues/8064
+systemd-service-file-refers-to-unusual-wantedby-target

debian/zfs-zed.postinst

@@ -8,7 +8,7 @@ etcd="/etc/zfs/zed.d"
 while read -r file ; do
     etcfile="${etcd}/${file}"
     [ -e "${etcfile}" ] && continue
-    ln -s "${zedd}/${file}" "${etcfile}"
+    ln -sfT "${zedd}/${file}" "${etcfile}"
 done < "${zedd}/DEFAULT-ENABLED"
 
 # remove the overrides created in prerm

debian/zfs-zed.postrm

@@ -0,0 +1,17 @@
+#!/bin/sh
+set -e
+
+zedd="/usr/lib/zfs-linux/zed.d"
+etcd="/etc/zfs/zed.d"
+
+if [ "$1" = "purge" ] && [ -d "$etcd" ] ; then
+    # remove the overrides created in prerm
+    find "${etcd}" -maxdepth 1 -lname '/dev/null' -delete
+    # remove any dangling symlinks to old zedlets
+    find "${etcd}" -maxdepth 1 -lname "${zedd}/*" -xtype l  -delete
+    # clean up any empty directories
+    ( rmdir "$etcd" && rmdir "/etc/zfs" ) || true
+fi
+
+#DEBHELPER#
+

debian/zfs-zed.prerm

@@ -7,8 +7,8 @@ etcd="/etc/zfs/zed.d"
 if [ "$1" != "failed-upgrade" ] && [ -d "${etcd}" ] && [ -d "${zedd}" ] ; then
     while read -r file ; do
         etcfile="${etcd}/${file}"
-        [ -e "${etcfile}" ] && continue
-        ln -s /dev/null "${etcfile}"
+        ( [ -L "${etcfile}" ] || [ -e "${etcfile}" ] ) && continue
+        ln -sT /dev/null "${etcfile}"
     done < "${zedd}/DEFAULT-ENABLED"
 fi
 

debian/zfsutils-linux.cron.d

@@ -1,4 +1,7 @@
 PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
 
+# TRIM the first Sunday of every month.
+24 0 1-7 * * root if [ $(date +\%w) -eq 0 ] && [ -x /usr/lib/zfs-linux/trim ]; then /usr/lib/zfs-linux/trim; fi
+
 # Scrub the second Sunday of every month.
-24 0 8-14 * * root [ $(date +\%w) -eq 0 ] && [ -x /usr/lib/zfs-linux/scrub ] && /usr/lib/zfs-linux/scrub
+24 0 8-14 * * root if [ $(date +\%w) -eq 0 ] && [ -x /usr/lib/zfs-linux/scrub ]; then /usr/lib/zfs-linux/scrub; fi

debian/zfsutils-linux.lintian-overrides

@@ -1 +1,14 @@
+spare-manual-page
 systemd-service-file-refers-to-unusual-wantedby-target
+binary-without-manpage usr/sbin/dbufstat
+binary-without-manpage usr/sbin/arc_summary
+manpage-has-errors-from-man
+appstream-metadata-missing-modalias-provide
+command-in-sbin-has-manpage-in-incorrect-section
+package-supports-alternative-init-but-no-init.d-script lib/systemd/system/zfs-import-cache.service
+package-supports-alternative-init-but-no-init.d-script lib/systemd/system/zfs-import-scan.service
+spelling-error-in-manpage
+package-supports-alternative-init-but-no-init.d-script lib/systemd/system/zfs-volume-wait.service
+systemd-service-file-missing-documentation-key lib/systemd/system/zfs-volume-wait.service
+extra-license-file usr/share/doc/zfsutils-linux/LICENSE.gz
+package-supports-alternative-init-but-no-init.d-script lib/systemd/system/zfs-load-module.service