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599b864813
Commitcc63068caused ENOSPC error when copy a large amount of files between two directories. The reason is that the patch limits zap leaf expansion to 2 retries, and return ENOSPC when failed. The intent for limiting retries is to prevent pointlessly growing table to max size when adding a block full of entries with same name in different case in mixed mode. However, it turns out we cannot use any limit on the retry. When we copy files from one directory in readdir order, we are copying in hash order, one leaf block at a time. Which means that if the leaf block in source directory has expanded 6 times, and you copy those entries in that block, by the time you need to expand the leaf in destination directory, you need to expand it 6 times in one go. So any limit on the retry will result in error where it shouldn't. Note that while we do use different salt for different directories, it seems that the salt/hash function doesn't provide enough randomization to the hash distance to prevent this from happening. Sincecc63068has already been reverted. This patch adds it back and removes the retry limit. Also, as it turn out, failing on zap_add() has a serious side effect for mzap_upgrade(). When upgrading from micro zap to fat zap, it will call zap_add() to transfer entries one at a time. If it hit any error halfway through, the remaining entries will be lost, causing those files to become orphan. This patch add a VERIFY to catch it. Reviewed-by: Sanjeev Bagewadi <sanjeev.bagewadi@gmail.com> Reviewed-by: Richard Yao <ryao@gentoo.org> Reviewed-by: Tony Hutter <hutter2@llnl.gov> Reviewed-by: Albert Lee <trisk@forkgnu.org> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed by: Matthew Ahrens <mahrens@delphix.com> Signed-off-by: Chunwei Chen <david.chen@nutanix.com> Closes #7401 Closes #7421
339 lines
13 KiB
Plaintext
339 lines
13 KiB
Plaintext
/*
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* This file is part of the ZFS Linux port.
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*
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* Copyright (c) 2009 Lawrence Livermore National Security, LLC.
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* Produced at Lawrence Livermore National Laboratory
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* Written by:
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* Brian Behlendorf <behlendorf1@llnl.gov>,
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* Herb Wartens <wartens2@llnl.gov>,
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* Jim Garlick <garlick@llnl.gov>
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* LLNL-CODE-403049
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*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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AC_INIT(m4_esyscmd(grep Name META | cut -d ':' -f 2 | tr -d ' \n'),
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m4_esyscmd(grep Version META | cut -d ':' -f 2 | tr -d ' \n'))
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AC_LANG(C)
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ZFS_AC_META
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AC_CONFIG_AUX_DIR([config])
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AC_CONFIG_MACRO_DIR([config])
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AC_CANONICAL_SYSTEM
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AM_MAINTAINER_MODE
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m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
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AM_INIT_AUTOMAKE([subdir-objects])
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AC_CONFIG_HEADERS([zfs_config.h], [
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(mv zfs_config.h zfs_config.h.tmp &&
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awk -f ${ac_srcdir}/config/config.awk zfs_config.h.tmp >zfs_config.h &&
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rm zfs_config.h.tmp) || exit 1])
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AC_PROG_INSTALL
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AC_PROG_CC
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AC_PROG_LIBTOOL
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AM_PROG_AS
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AM_PROG_CC_C_O
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AX_CODE_COVERAGE
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ZFS_AC_LICENSE
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ZFS_AC_PACKAGE
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ZFS_AC_CONFIG
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ZFS_AC_DEBUG
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ZFS_AC_DEBUGINFO
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AC_CONFIG_FILES([
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Makefile
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udev/Makefile
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udev/rules.d/Makefile
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etc/Makefile
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etc/init.d/Makefile
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etc/zfs/Makefile
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etc/systemd/system/Makefile
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etc/sudoers.d/Makefile
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etc/modules-load.d/Makefile
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man/Makefile
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man/man5/Makefile
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man/man8/Makefile
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lib/Makefile
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lib/libspl/Makefile
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lib/libspl/asm-generic/Makefile
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lib/libspl/asm-i386/Makefile
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lib/libspl/asm-x86_64/Makefile
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lib/libspl/include/ia32/Makefile
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lib/libspl/include/rpc/Makefile
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lib/libspl/include/sys/Makefile
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lib/libspl/include/sys/dktp/Makefile
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lib/libspl/include/util/Makefile
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lib/libavl/Makefile
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lib/libefi/Makefile
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lib/libicp/Makefile
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lib/libnvpair/Makefile
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lib/libtpool/Makefile
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lib/libunicode/Makefile
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lib/libuutil/Makefile
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lib/libzpool/Makefile
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lib/libzfs/libzfs.pc
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lib/libzfs/libzfs_core.pc
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lib/libzfs/Makefile
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lib/libzfs_core/Makefile
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lib/libshare/Makefile
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cmd/Makefile
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cmd/zdb/Makefile
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cmd/zhack/Makefile
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cmd/zfs/Makefile
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cmd/zinject/Makefile
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cmd/zpool/Makefile
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cmd/zstreamdump/Makefile
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cmd/zvol_id/Makefile
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cmd/vdev_id/Makefile
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cmd/dbufstat/Makefile
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cmd/zgenhostid/Makefile
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contrib/Makefile
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contrib/bash_completion.d/Makefile
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contrib/dracut/02zfsexpandknowledge/Makefile
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contrib/initramfs/Makefile
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module/Makefile
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module/zcommon/Makefile
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include/sys/fm/fs/Makefile
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include/sys/crypto/Makefile
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include/sys/sysevent/Makefile
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include/sys/lua/Makefile
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tests/zfs-tests/Makefile
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tests/zfs-tests/cmd/user_ns_exec/Makefile
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tests/zfs-tests/cmd/devname2devid/Makefile
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tests/zfs-tests/cmd/dir_rd_update/Makefile
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tests/zfs-tests/cmd/largest_file/Makefile
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tests/zfs-tests/cmd/mmap_exec/Makefile
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tests/zfs-tests/cmd/mmap_libaio/Makefile
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tests/zfs-tests/cmd/mmapwrite/Makefile
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tests/zfs-tests/cmd/rm_lnkcnt_zero_file/Makefile
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tests/zfs-tests/tests/functional/chattr/Makefile
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tests/zfs-tests/tests/functional/clean_mirror/Makefile
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tests/zfs-tests/tests/functional/cli_root/Makefile
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tests/zfs-tests/tests/functional/cli_root/zdb/Makefile
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tests/zfs-tests/tests/functional/cli_root/zfs_bookmark/Makefile
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tests/zfs-tests/tests/functional/cli_root/zfs_change-key/Makefile
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tests/zfs-tests/tests/functional/cli_root/zfs_clone/Makefile
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tests/zfs-tests/tests/functional/cli_root/zfs_copies/Makefile
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tests/zfs-tests/tests/functional/cli_root/zfs_destroy/Makefile
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tests/zfs-tests/tests/functional/cli_root/zfs_load-key/Makefile
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tests/zfs-tests/tests/functional/cli_root/zfs_mount/Makefile
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tests/zfs-tests/tests/functional/cli_root/zfs_share/Makefile
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tests/zfs-tests/tests/functional/cli_root/zfs_snapshot/Makefile
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tests/zfs-tests/tests/functional/cli_root/zfs_unload-key/Makefile
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tests/zfs-tests/tests/functional/cli_root/zfs_unmount/Makefile
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tests/zfs-tests/tests/functional/cli_root/zfs_unshare/Makefile
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tests/zfs-tests/tests/functional/cli_root/zfs_upgrade/Makefile
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tests/zfs-tests/tests/functional/cli_root/zpool_add/Makefile
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tests/zfs-tests/tests/functional/cli_root/zpool_attach/Makefile
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tests/zfs-tests/tests/functional/cli_root/zpool_create/Makefile
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tests/zfs-tests/tests/functional/cli_root/zpool_destroy/Makefile
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tests/zfs-tests/tests/functional/cli_root/zpool_expand/Makefile
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tests/zfs-tests/tests/functional/cli_root/zpool_export/Makefile
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tests/zfs-tests/tests/functional/cli_root/zpool_get/Makefile
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tests/zfs-tests/tests/functional/cli_root/zpool_history/Makefile
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tests/zfs-tests/tests/functional/cli_root/zpool_import/Makefile
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tests/zfs-tests/tests/functional/cli_root/zpool_labelclear/Makefile
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tests/zfs-tests/tests/functional/cli_root/zpool/Makefile
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tests/zfs-tests/tests/functional/cli_root/zpool_offline/Makefile
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tests/zfs-tests/tests/functional/cli_root/zpool_online/Makefile
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tests/zfs-tests/tests/functional/cli_root/zpool_remove/Makefile
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tests/zfs-tests/tests/functional/cli_root/zpool_reopen/Makefile
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tests/zfs-tests/tests/functional/cli_root/zpool_replace/Makefile
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tests/zfs-tests/tests/functional/cli_root/zpool_scrub/Makefile
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tests/zfs-tests/tests/functional/cli_root/zpool_set/Makefile
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tests/zfs-tests/tests/functional/cli_root/zpool_split/Makefile
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tests/zfs-tests/tests/functional/cli_root/zpool_status/Makefile
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tests/zfs-tests/tests/functional/cli_root/zpool_sync/Makefile
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tests/zfs-tests/tests/functional/cli_root/zpool_upgrade/Makefile
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tests/zfs-tests/tests/functional/cli_user/zfs_list/Makefile
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tests/zfs-tests/tests/functional/ctime/Makefile
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tests/zfs-tests/tests/functional/delegate/Makefile
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tests/zfs-tests/tests/perf/scripts/Makefile
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rpm/Makefile
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rpm/redhat/Makefile
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rpm/redhat/zfs.spec
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rpm/redhat/zfs-kmod.spec
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rpm/redhat/zfs-dkms.spec
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rpm/generic/Makefile
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rpm/generic/zfs-kmod.spec
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zfs.release
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