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Remove vn_rename and vn_remove dependency #6753

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merged 1 commit into from
Oct 19, 2017

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behlendorf
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@behlendorf behlendorf commented Oct 11, 2017

Description

The only place vn_rename and vn_remove are used is when writing
out an updated pool configuration file. By truncating the file
instead of renaming and removing it we can avoid having to implement
these interfaces entirely. Functionally an empty cache file is
treated the same as a missing cache file. This is particularly
advantageous because the Linux kernel has never provided a way
to reliably implement vn_rename and vn_remove.

Motivation and Context

Avoid implementing complicated and potentially fragile functionality
in the SPL when possible.

Issue openzfs/spl#648

How Has This Been Tested?

Locally builds. Waiting on the buildbot for complete ZTS test results.

Types of changes

  • Bug fix (non-breaking change which fixes an issue)
  • New feature (non-breaking change which adds functionality)
  • Performance enhancement (non-breaking change which improves efficiency)
  • Code cleanup (non-breaking change which makes code smaller or more readable)
  • Breaking change (fix or feature that would cause existing functionality to change)
  • Documentation (a change to man pages or other documentation)

Checklist:

  • My code follows the ZFS on Linux code style requirements.
  • I have updated the documentation accordingly.
  • I have read the CONTRIBUTING document.
  • I have added tests to cover my changes.
  • All new and existing tests passed.
  • All commit messages are properly formatted and contain Signed-off-by.
  • Change has been approved by a ZFS on Linux member.

@behlendorf
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@ab-oe could you please review and comment on this approach for resolving openzfs/spl#648

@behlendorf behlendorf force-pushed the vn-rename-remove branch 2 times, most recently from d43636d to 88d30e4 Compare October 12, 2017 04:42
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codecov bot commented Oct 12, 2017

Codecov Report

Merging #6753 into master will increase coverage by <.01%.
The diff coverage is 88.88%.

Impacted file tree graph

@@            Coverage Diff             @@
##           master    #6753      +/-   ##
==========================================
+ Coverage   74.51%   74.52%   +<.01%     
==========================================
  Files         297      297              
  Lines       94356    94364       +8     
==========================================
+ Hits        70314    70327      +13     
+ Misses      24042    24037       -5
Flag Coverage Δ
#kernel 74.35% <87.5%> (+0.02%) ⬆️
#user 66.72% <100%> (+0.04%) ⬆️
Impacted Files Coverage Δ
module/zfs/spa_config.c 94.85% <88.88%> (-1.75%) ⬇️
module/zfs/dmu_tx.c 81.87% <0%> (-4.59%) ⬇️
cmd/zed/agents/zfs_mod.c 61.4% <0%> (-4.22%) ⬇️
lib/libuutil/uu_ident.c 60.71% <0%> (-3.58%) ⬇️
cmd/zed/agents/zfs_diagnosis.c 31.96% <0%> (-2.94%) ⬇️
cmd/raidz_test/raidz_test.c 79.47% <0%> (-1.47%) ⬇️
module/zfs/dmu_traverse.c 93.79% <0%> (-0.69%) ⬇️
module/zfs/dsl_scan.c 82.22% <0%> (-0.64%) ⬇️
module/zfs/zfs_fm.c 83.33% <0%> (-0.6%) ⬇️
... and 37 more

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@behlendorf I see one problem here. If the cachefile property is modified, the old cache file won't be removed.

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@ab-oe good point. that's not exactly ideal. This will end up leaving zero-length files in place of the old cache files. Functionally speaking that should be fine, but it does feel sloppy.

@behlendorf behlendorf added the Status: Work in Progress Not yet ready for general review label Oct 16, 2017
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ab-oe commented Oct 17, 2017

@behlendorf I confirm that functionally everything works well and there are no more false ereport.fs.zfs.config_cache_write events. I think that documenting it in zpool manual page is sufficient. Currently the manual says: "When the last pool using a cachefile is exported or destroyed, the file is removed." and that isn't true.

@behlendorf behlendorf removed the Status: Work in Progress Not yet ready for general review label Oct 17, 2017
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Refreshed with updated documentation.

@behlendorf behlendorf requested a review from don-brady October 17, 2017 20:02
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LGTM with just one small correction, thanks!

* unlinked to make sure we always have a consistent view of the data.
* in performing a rename and remove from within the kernel the file
* is instead truncated and overwritten in place. This way we always
* always have a consistent view of the data or a zero length file.
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2 times "always"

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Thanks, fixed.

The only place vn_rename and vn_remove are used is when writing
out an updated pool configuration file.  By truncating the file
instead of renaming and removing it we can avoid having to implement
these interfaces entirely.  Functionally an empty cache file is
treated the same as a missing cache file.  This is particularly
advantageous because the Linux kernel has never provided a way
to reliably implement vn_rename and vn_remove.

The cachefile_004_pos.ksh test case was updated to understand
that an empty cache file is the same as a missing one.

The zfs-import-* systemd service files were not updated to use
ConditionFileNotEmpty in place of ConditionPathExists.  This
means that after exporting all pools and rebooting new pools
will not the scanned for on the next boot.  This small change
should not impact normal usage since pools are not exported
as part of a normal shutdown.

Documentation was updated accordingly.

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Requires-spl: refs/pull/661/head
@behlendorf behlendorf merged commit bbf1ad6 into openzfs:master Oct 19, 2017
wli5 pushed a commit to wli5/zfs that referenced this pull request Oct 20, 2017
The only place vn_rename and vn_remove are used is when writing
out an updated pool configuration file.  By truncating the file
instead of renaming and removing it we can avoid having to implement
these interfaces entirely.  Functionally an empty cache file is
treated the same as a missing cache file.  This is particularly
advantageous because the Linux kernel has never provided a way
to reliably implement vn_rename and vn_remove.

The cachefile_004_pos.ksh test case was updated to understand
that an empty cache file is the same as a missing one.

The zfs-import-* systemd service files were not updated to use
ConditionFileNotEmpty in place of ConditionPathExists.  This
means that after exporting all pools and rebooting new pools
will not the scanned for on the next boot.  This small change
should not impact normal usage since pools are not exported
as part of a normal shutdown.

Documentation was updated accordingly.

Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Arkadiusz Bubała <arkadiusz.bubala@open-e.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes openzfs/spl#648
Closes openzfs#6753
Nasf-Fan pushed a commit to Nasf-Fan/zfs that referenced this pull request Nov 4, 2017
The only place vn_rename and vn_remove are used is when writing
out an updated pool configuration file.  By truncating the file
instead of renaming and removing it we can avoid having to implement
these interfaces entirely.  Functionally an empty cache file is
treated the same as a missing cache file.  This is particularly
advantageous because the Linux kernel has never provided a way
to reliably implement vn_rename and vn_remove.

The cachefile_004_pos.ksh test case was updated to understand
that an empty cache file is the same as a missing one.

The zfs-import-* systemd service files were not updated to use
ConditionFileNotEmpty in place of ConditionPathExists.  This
means that after exporting all pools and rebooting new pools
will not the scanned for on the next boot.  This small change
should not impact normal usage since pools are not exported
as part of a normal shutdown.

Documentation was updated accordingly.

Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Arkadiusz Bubała <arkadiusz.bubala@open-e.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes openzfs/spl#648
Closes openzfs#6753
Nasf-Fan pushed a commit to Nasf-Fan/zfs that referenced this pull request Nov 6, 2017
The only place vn_rename and vn_remove are used is when writing
out an updated pool configuration file.  By truncating the file
instead of renaming and removing it we can avoid having to implement
these interfaces entirely.  Functionally an empty cache file is
treated the same as a missing cache file.  This is particularly
advantageous because the Linux kernel has never provided a way
to reliably implement vn_rename and vn_remove.

The cachefile_004_pos.ksh test case was updated to understand
that an empty cache file is the same as a missing one.

The zfs-import-* systemd service files were not updated to use
ConditionFileNotEmpty in place of ConditionPathExists.  This
means that after exporting all pools and rebooting new pools
will not the scanned for on the next boot.  This small change
should not impact normal usage since pools are not exported
as part of a normal shutdown.

Documentation was updated accordingly.

Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Arkadiusz Bubała <arkadiusz.bubala@open-e.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes openzfs/spl#648
Closes openzfs#6753
tonyhutter pushed a commit to tonyhutter/zfs that referenced this pull request Jan 16, 2018
The only place vn_rename and vn_remove are used is when writing
out an updated pool configuration file.  By truncating the file
instead of renaming and removing it we can avoid having to implement
these interfaces entirely.  Functionally an empty cache file is
treated the same as a missing cache file.  This is particularly
advantageous because the Linux kernel has never provided a way
to reliably implement vn_rename and vn_remove.

The cachefile_004_pos.ksh test case was updated to understand
that an empty cache file is the same as a missing one.

The zfs-import-* systemd service files were not updated to use
ConditionFileNotEmpty in place of ConditionPathExists.  This
means that after exporting all pools and rebooting new pools
will not the scanned for on the next boot.  This small change
should not impact normal usage since pools are not exported
as part of a normal shutdown.

Documentation was updated accordingly.

Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Arkadiusz Bubała <arkadiusz.bubala@open-e.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes openzfs/spl#648
Closes openzfs#6753
tonyhutter pushed a commit to tonyhutter/zfs that referenced this pull request Jan 18, 2018
The only place vn_rename and vn_remove are used is when writing
out an updated pool configuration file.  By truncating the file
instead of renaming and removing it we can avoid having to implement
these interfaces entirely.  Functionally an empty cache file is
treated the same as a missing cache file.  This is particularly
advantageous because the Linux kernel has never provided a way
to reliably implement vn_rename and vn_remove.

The cachefile_004_pos.ksh test case was updated to understand
that an empty cache file is the same as a missing one.

The zfs-import-* systemd service files were not updated to use
ConditionFileNotEmpty in place of ConditionPathExists.  This
means that after exporting all pools and rebooting new pools
will not the scanned for on the next boot.  This small change
should not impact normal usage since pools are not exported
as part of a normal shutdown.

Documentation was updated accordingly.

Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Arkadiusz Bubała <arkadiusz.bubala@open-e.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes openzfs/spl#648
Closes openzfs#6753
Nasf-Fan pushed a commit to Nasf-Fan/zfs that referenced this pull request Jan 29, 2018
The only place vn_rename and vn_remove are used is when writing
out an updated pool configuration file.  By truncating the file
instead of renaming and removing it we can avoid having to implement
these interfaces entirely.  Functionally an empty cache file is
treated the same as a missing cache file.  This is particularly
advantageous because the Linux kernel has never provided a way
to reliably implement vn_rename and vn_remove.

The cachefile_004_pos.ksh test case was updated to understand
that an empty cache file is the same as a missing one.

The zfs-import-* systemd service files were not updated to use
ConditionFileNotEmpty in place of ConditionPathExists.  This
means that after exporting all pools and rebooting new pools
will not the scanned for on the next boot.  This small change
should not impact normal usage since pools are not exported
as part of a normal shutdown.

Documentation was updated accordingly.

Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Arkadiusz Bubała <arkadiusz.bubala@open-e.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes openzfs/spl#648
Closes openzfs#6753
Nasf-Fan pushed a commit to Nasf-Fan/zfs that referenced this pull request Feb 13, 2018
The only place vn_rename and vn_remove are used is when writing
out an updated pool configuration file.  By truncating the file
instead of renaming and removing it we can avoid having to implement
these interfaces entirely.  Functionally an empty cache file is
treated the same as a missing cache file.  This is particularly
advantageous because the Linux kernel has never provided a way
to reliably implement vn_rename and vn_remove.

The cachefile_004_pos.ksh test case was updated to understand
that an empty cache file is the same as a missing one.

The zfs-import-* systemd service files were not updated to use
ConditionFileNotEmpty in place of ConditionPathExists.  This
means that after exporting all pools and rebooting new pools
will not the scanned for on the next boot.  This small change
should not impact normal usage since pools are not exported
as part of a normal shutdown.

Documentation was updated accordingly.

Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Arkadiusz Bubała <arkadiusz.bubala@open-e.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes openzfs/spl#648
Closes openzfs#6753
tonyhutter pushed a commit to tonyhutter/zfs that referenced this pull request Mar 7, 2018
The only place vn_rename and vn_remove are used is when writing
out an updated pool configuration file.  By truncating the file
instead of renaming and removing it we can avoid having to implement
these interfaces entirely.  Functionally an empty cache file is
treated the same as a missing cache file.  This is particularly
advantageous because the Linux kernel has never provided a way
to reliably implement vn_rename and vn_remove.

The cachefile_004_pos.ksh test case was updated to understand
that an empty cache file is the same as a missing one.

The zfs-import-* systemd service files were not updated to use
ConditionFileNotEmpty in place of ConditionPathExists.  This
means that after exporting all pools and rebooting new pools
will not the scanned for on the next boot.  This small change
should not impact normal usage since pools are not exported
as part of a normal shutdown.

Documentation was updated accordingly.

Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Arkadiusz Bubała <arkadiusz.bubala@open-e.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes openzfs/spl#648
Closes openzfs#6753
tonyhutter pushed a commit to tonyhutter/zfs that referenced this pull request Mar 7, 2018
This is a squashed patchset for zfs-0.7.7.  The individual commits are
in the tonyhutter:zfs-0.7.7-hutter branch.  I squashed the commits so
that buildbot wouldn't have to run against each one, and because
github/builbot seem to have a maximum limit of 30 commits they can
test from a PR.

- Linux 4.16 compat: get_disk_and_module() openzfs#7264
- Change checksum & IO delay ratelimit values openzfs#7252
- Increment zil_itx_needcopy_bytes properly openzfs#6988  openzfs#7176
- Fix some typos openzfs#7237
- Fix zpool(8) list example to match actual format openzfs#7244
- Add SMART self-test results to zpool status -c openzfs#7178
- Add scrub after resilver zed script openzfs#4662  openzfs#7086
- Fix free memory calculation on v3.14+ openzfs#7170
- Report duration and error in mmp_history entries openzfs#7190
- Do not initiate MMP writes while pool is suspended openzfs#7182
- Linux 4.16 compat: use correct *_dec_and_test() openzfs#7179  openzfs#7211
- Allow modprobe to fail when called within systemd openzfs#7174
- Add SMART attributes for SSD and NVMe openzfs#7183  openzfs#7193
- Correct count_uberblocks in mmp.kshlib openzfs#7191
- Fix config issues: frame size and headers openzfs#7169
- Clarify zinject(8) explanation of -e openzfs#7172
- OpenZFS 8857 - zio_remove_child() panic due to already destroyed
  parent zio openzfs#7168
- 'zfs receive' fails with "dataset is busy" openzfs#7129  openzfs#7154
- contrib/initramfs: add missing conf.d/zfs openzfs#7158
- mmp should use a fixed tag for spa_config locks openzfs#6530  openzfs#7155
- Handle zap_add() failures in mixed case mode openzfs#7011 openzfs#7054
- Fix zdb -ed on objset for exported pool openzfs#7099 openzfs#6464
- Fix zdb -E segfault openzfs#7099
- Fix zdb -R decompression openzfs#7099  openzfs#4984
- Fix racy assignment of zcb.zcb_haderrors openzfs#7099
- Fix zle_decompress out of bound access openzfs#7099
- Fix zdb -c traverse stop on damaged objset root openzfs#7099
- Linux 4.11 compat: avoid refcount_t name conflict openzfs#7148
- Linux 4.16 compat: inode_set_iversion() openzfs#7148
- OpenZFS 8966 - Source file zfs_acl.c, function zfs_aclset_common
  contains a use after end of the lifetime of a local variable openzfs#7141
- Remove deprecated zfs_arc_p_aggressive_disable openzfs#7135
- Fix default libdir for Debian/Ubuntu openzfs#7083  openzfs#7101
- Bug fix in qat_compress.c for vmalloc addr check openzfs#7125
- Fix systemd_ RPM macros usage on Debian-based distributions openzfs#7074
  openzfs#7100
- Emit an error message before MMP suspends pool openzfs#7048
- ZTS: Fix create-o_ashift test case openzfs#6924  openzfs#6977
- Fix --with-systemd on Debian-based distributions (openzfs#6963) openzfs#6591  openzfs#6963
- Remove vn_rename and vn_remove dependency openzfs/spl#648 openzfs#6753
- Add support for "--enable-code-coverage" option openzfs#6670
- Make "-fno-inline" compile option more accessible openzfs#6605
- Add configure option to enable gcov analysis openzfs#6642
- Implement --enable-debuginfo to force debuginfo openzfs#2734
- Make --enable-debug fail when given bogus args openzfs#2734

Signed-off-by: Tony Hutter <hutter2@llnl.gov>
Requires-spl: refs/pull/690/head
@tonyhutter tonyhutter mentioned this pull request Mar 7, 2018
13 tasks
tonyhutter pushed a commit to tonyhutter/zfs that referenced this pull request Mar 12, 2018
The only place vn_rename and vn_remove are used is when writing
out an updated pool configuration file.  By truncating the file
instead of renaming and removing it we can avoid having to implement
these interfaces entirely.  Functionally an empty cache file is
treated the same as a missing cache file.  This is particularly
advantageous because the Linux kernel has never provided a way
to reliably implement vn_rename and vn_remove.

The cachefile_004_pos.ksh test case was updated to understand
that an empty cache file is the same as a missing one.

The zfs-import-* systemd service files were not updated to use
ConditionFileNotEmpty in place of ConditionPathExists.  This
means that after exporting all pools and rebooting new pools
will not the scanned for on the next boot.  This small change
should not impact normal usage since pools are not exported
as part of a normal shutdown.

Documentation was updated accordingly.

Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Arkadiusz Bubała <arkadiusz.bubala@open-e.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes openzfs/spl#648
Closes openzfs#6753
tonyhutter pushed a commit to tonyhutter/zfs that referenced this pull request Mar 13, 2018
This is a squashed patchset for zfs-0.7.7.  The individual commits are
in the tonyhutter:zfs-0.7.7-hutter branch.  I squashed the commits so
that buildbot wouldn't have to run against each one, and because
github/builbot seem to have a maximum limit of 30 commits they can
test from a PR.

- Fix MMP write frequency for large pools openzfs#7205 openzfs#7289
- Handle zio_resume and mmp => off openzfs#7286
- Fix zfs-kmod builds when using rpm >= 4.14 openzfs#7284
- zdb and inuse tests don't pass with real disks openzfs#6939 openzfs#7261
- Take user namespaces into account in policy checks openzfs#6800 openzfs#7270
- Detect long config lock acquisition in mmp openzfs#7212
- Linux 4.16 compat: get_disk_and_module() openzfs#7264
- Change checksum & IO delay ratelimit values openzfs#7252
- Increment zil_itx_needcopy_bytes properly openzfs#6988 openzfs#7176
- Fix some typos openzfs#7237
- Fix zpool(8) list example to match actual format openzfs#7244
- Add SMART self-test results to zpool status -c openzfs#7178
- Add scrub after resilver zed script openzfs#4662 openzfs#7086
- Fix free memory calculation on v3.14+ openzfs#7170
- Report duration and error in mmp_history entries openzfs#7190
- Do not initiate MMP writes while pool is suspended openzfs#7182
- Linux 4.16 compat: use correct *_dec_and_test()
- Allow modprobe to fail when called within systemd openzfs#7174
- Add SMART attributes for SSD and NVMe openzfs#7183 openzfs#7193
- Correct count_uberblocks in mmp.kshlib openzfs#7191
- Fix config issues: frame size and headers openzfs#7169
- Clarify zinject(8) explanation of -e openzfs#7172
- OpenZFS 8857 - zio_remove_child() panic due to already destroyed parent zio openzfs#7168
- 'zfs receive' fails with "dataset is busy" openzfs#7129 openzfs#7154
- contrib/initramfs: add missing conf.d/zfs openzfs#7158
- mmp should use a fixed tag for spa_config locks openzfs#6530 openzfs#7155
- Handle zap_add() failures in mixed case mode openzfs#7011 openzfs#7054
- Fix zdb -ed on objset for exported pool openzfs#7099 openzfs#6464
- Fix zdb -E segfault openzfs#7099
- Fix zdb -R decompression openzfs#7099 openzfs#4984
- Fix racy assignment of zcb.zcb_haderrors openzfs#7099
- Fix zle_decompress out of bound access openzfs#7099
- Fix zdb -c traverse stop on damaged objset root openzfs#7099
- Linux 4.11 compat: avoid refcount_t name conflict openzfs#7148
- Linux 4.16 compat: inode_set_iversion() openzfs#7148
- OpenZFS 8966 - Source file zfs_acl.c, function zfs_aclset_common contains a use after end of the lifetime of a local variable openzfs#7141
- Remove deprecated zfs_arc_p_aggressive_disable openzfs#7135
- Fix default libdir for Debian/Ubuntu openzfs#7083 openzfs#7101
- Bug fix in qat_compress.c for vmalloc addr check openzfs#7125
- Fix systemd_ RPM macros usage on Debian-based distributions openzfs#7074 openzfs#7100
- Emit an error message before MMP suspends pool openzfs#7048
- ZTS: Fix create-o_ashift test case openzfs#6924 openzfs#6977
- Fix --with-systemd on Debian-based distributions (openzfs#6963) openzfs#6591 openzfs#6963
- Remove vn_rename and vn_remove dependency openzfs/spl#648 openzfs#6753
- Add support for "--enable-code-coverage" option openzfs#6670
- Make "-fno-inline" compile option more accessible openzfs#6605
- Add configure option to enable gcov analysis openzfs#6642
- Implement --enable-debuginfo to force debuginfo openzfs#2734
- Make --enable-debug fail when given bogus args openzfs#2734

Signed-off-by: Tony Hutter <hutter2@llnl.gov>
Requires-spl: refs/pull/690/head
tonyhutter pushed a commit to tonyhutter/zfs that referenced this pull request Mar 13, 2018
This is a squashed patchset for zfs-0.7.7.  The individual commits are
in the tonyhutter:zfs-0.7.7-hutter branch.  I squashed the commits so
that buildbot wouldn't have to run against each one, and because
github/builbot seem to have a maximum limit of 30 commits they can
test from a PR.

- Fix MMP write frequency for large pools openzfs#7205 openzfs#7289
- Handle zio_resume and mmp => off openzfs#7286
- Fix zfs-kmod builds when using rpm >= 4.14 openzfs#7284
- zdb and inuse tests don't pass with real disks openzfs#6939 openzfs#7261
- Take user namespaces into account in policy checks openzfs#6800 openzfs#7270
- Detect long config lock acquisition in mmp openzfs#7212
- Linux 4.16 compat: get_disk_and_module() openzfs#7264
- Change checksum & IO delay ratelimit values openzfs#7252
- Increment zil_itx_needcopy_bytes properly openzfs#6988 openzfs#7176
- Fix some typos openzfs#7237
- Fix zpool(8) list example to match actual format openzfs#7244
- Add SMART self-test results to zpool status -c openzfs#7178
- Add scrub after resilver zed script openzfs#4662 openzfs#7086
- Fix free memory calculation on v3.14+ openzfs#7170
- Report duration and error in mmp_history entries openzfs#7190
- Do not initiate MMP writes while pool is suspended openzfs#7182
- Linux 4.16 compat: use correct *_dec_and_test()
- Allow modprobe to fail when called within systemd openzfs#7174
- Add SMART attributes for SSD and NVMe openzfs#7183 openzfs#7193
- Correct count_uberblocks in mmp.kshlib openzfs#7191
- Fix config issues: frame size and headers openzfs#7169
- Clarify zinject(8) explanation of -e openzfs#7172
- OpenZFS 8857 - zio_remove_child() panic due to already destroyed
  parent zio openzfs#7168
- 'zfs receive' fails with "dataset is busy" openzfs#7129 openzfs#7154
- contrib/initramfs: add missing conf.d/zfs openzfs#7158
- mmp should use a fixed tag for spa_config locks openzfs#6530 openzfs#7155
- Handle zap_add() failures in mixed case mode openzfs#7011 openzfs#7054
- Fix zdb -ed on objset for exported pool openzfs#7099 openzfs#6464
- Fix zdb -E segfault openzfs#7099
- Fix zdb -R decompression openzfs#7099 openzfs#4984
- Fix racy assignment of zcb.zcb_haderrors openzfs#7099
- Fix zle_decompress out of bound access openzfs#7099
- Fix zdb -c traverse stop on damaged objset root openzfs#7099
- Linux 4.11 compat: avoid refcount_t name conflict openzfs#7148
- Linux 4.16 compat: inode_set_iversion() openzfs#7148
- OpenZFS 8966 - Source file zfs_acl.c, function zfs_aclset_common
  contains a use after end of the lifetime of a local variable openzfs#7141
- Remove deprecated zfs_arc_p_aggressive_disable openzfs#7135
- Fix default libdir for Debian/Ubuntu openzfs#7083 openzfs#7101
- Bug fix in qat_compress.c for vmalloc addr check openzfs#7125
- Fix systemd_ RPM macros usage on Debian-based distributions openzfs#7074
  openzfs#7100
- Emit an error message before MMP suspends pool openzfs#7048
- ZTS: Fix create-o_ashift test case openzfs#6924 openzfs#6977
- Fix --with-systemd on Debian-based distributions (openzfs#6963) openzfs#6591 openzfs#6963
- Remove vn_rename and vn_remove dependency openzfs/spl#648 openzfs#6753
- Add support for "--enable-code-coverage" option openzfs#6670
- Make "-fno-inline" compile option more accessible openzfs#6605
- Add configure option to enable gcov analysis openzfs#6642
- Implement --enable-debuginfo to force debuginfo openzfs#2734
- Make --enable-debug fail when given bogus args openzfs#2734

Signed-off-by: Tony Hutter <hutter2@llnl.gov>
Requires-spl: refs/pull/690/head
tonyhutter pushed a commit to tonyhutter/zfs that referenced this pull request Mar 13, 2018
The only place vn_rename and vn_remove are used is when writing
out an updated pool configuration file.  By truncating the file
instead of renaming and removing it we can avoid having to implement
these interfaces entirely.  Functionally an empty cache file is
treated the same as a missing cache file.  This is particularly
advantageous because the Linux kernel has never provided a way
to reliably implement vn_rename and vn_remove.

The cachefile_004_pos.ksh test case was updated to understand
that an empty cache file is the same as a missing one.

The zfs-import-* systemd service files were not updated to use
ConditionFileNotEmpty in place of ConditionPathExists.  This
means that after exporting all pools and rebooting new pools
will not the scanned for on the next boot.  This small change
should not impact normal usage since pools are not exported
as part of a normal shutdown.

Documentation was updated accordingly.

Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Arkadiusz Bubała <arkadiusz.bubala@open-e.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes openzfs/spl#648
Closes openzfs#6753
tonyhutter pushed a commit to tonyhutter/zfs that referenced this pull request Mar 13, 2018
This is a squashed patchset for zfs-0.7.7.  The individual commits are
in the tonyhutter:zfs-0.7.7-hutter branch.  I squashed the commits so
that buildbot wouldn't have to run against each one, and because
github/builbot seem to have a maximum limit of 30 commits they can
test from a PR.

- Fix MMP write frequency for large pools openzfs#7205 openzfs#7289
- Handle zio_resume and mmp => off openzfs#7286
- Fix zfs-kmod builds when using rpm >= 4.14 openzfs#7284
- zdb and inuse tests don't pass with real disks openzfs#6939 openzfs#7261
- Take user namespaces into account in policy checks openzfs#6800 openzfs#7270
- Detect long config lock acquisition in mmp openzfs#7212
- Linux 4.16 compat: get_disk_and_module() openzfs#7264
- Change checksum & IO delay ratelimit values openzfs#7252
- Increment zil_itx_needcopy_bytes properly openzfs#6988 openzfs#7176
- Fix some typos openzfs#7237
- Fix zpool(8) list example to match actual format openzfs#7244
- Add SMART self-test results to zpool status -c openzfs#7178
- Add scrub after resilver zed script openzfs#4662 openzfs#7086
- Fix free memory calculation on v3.14+ openzfs#7170
- Report duration and error in mmp_history entries openzfs#7190
- Do not initiate MMP writes while pool is suspended openzfs#7182
- Linux 4.16 compat: use correct *_dec_and_test()
- Allow modprobe to fail when called within systemd openzfs#7174
- Add SMART attributes for SSD and NVMe openzfs#7183 openzfs#7193
- Correct count_uberblocks in mmp.kshlib openzfs#7191
- Fix config issues: frame size and headers openzfs#7169
- Clarify zinject(8) explanation of -e openzfs#7172
- OpenZFS 8857 - zio_remove_child() panic due to already destroyed
  parent zio openzfs#7168
- 'zfs receive' fails with "dataset is busy" openzfs#7129 openzfs#7154
- contrib/initramfs: add missing conf.d/zfs openzfs#7158
- mmp should use a fixed tag for spa_config locks openzfs#6530 openzfs#7155
- Handle zap_add() failures in mixed case mode openzfs#7011 openzfs#7054
- Fix zdb -ed on objset for exported pool openzfs#7099 openzfs#6464
- Fix zdb -E segfault openzfs#7099
- Fix zdb -R decompression openzfs#7099 openzfs#4984
- Fix racy assignment of zcb.zcb_haderrors openzfs#7099
- Fix zle_decompress out of bound access openzfs#7099
- Fix zdb -c traverse stop on damaged objset root openzfs#7099
- Linux 4.11 compat: avoid refcount_t name conflict openzfs#7148
- Linux 4.16 compat: inode_set_iversion() openzfs#7148
- OpenZFS 8966 - Source file zfs_acl.c, function zfs_aclset_common
  contains a use after end of the lifetime of a local variable openzfs#7141
- Remove deprecated zfs_arc_p_aggressive_disable openzfs#7135
- Fix default libdir for Debian/Ubuntu openzfs#7083 openzfs#7101
- Bug fix in qat_compress.c for vmalloc addr check openzfs#7125
- Fix systemd_ RPM macros usage on Debian-based distributions openzfs#7074
  openzfs#7100
- Emit an error message before MMP suspends pool openzfs#7048
- ZTS: Fix create-o_ashift test case openzfs#6924 openzfs#6977
- Fix --with-systemd on Debian-based distributions (openzfs#6963) openzfs#6591 openzfs#6963
- Remove vn_rename and vn_remove dependency openzfs/spl#648 openzfs#6753
- Fix "--enable-code-coverage" debug build openzfs#6674
- Update codecov.yml openzfs#6669
- Add support for "--enable-code-coverage" option openzfs#6670
- Make "-fno-inline" compile option more accessible openzfs#6605
- Add configure option to enable gcov analysis openzfs#6642
- Implement --enable-debuginfo to force debuginfo openzfs#2734
- Make --enable-debug fail when given bogus args openzfs#2734

Signed-off-by: Tony Hutter <hutter2@llnl.gov>
Requires-spl: refs/pull/690/head
tonyhutter pushed a commit that referenced this pull request Mar 19, 2018
The only place vn_rename and vn_remove are used is when writing
out an updated pool configuration file.  By truncating the file
instead of renaming and removing it we can avoid having to implement
these interfaces entirely.  Functionally an empty cache file is
treated the same as a missing cache file.  This is particularly
advantageous because the Linux kernel has never provided a way
to reliably implement vn_rename and vn_remove.

The cachefile_004_pos.ksh test case was updated to understand
that an empty cache file is the same as a missing one.

The zfs-import-* systemd service files were not updated to use
ConditionFileNotEmpty in place of ConditionPathExists.  This
means that after exporting all pools and rebooting new pools
will not the scanned for on the next boot.  This small change
should not impact normal usage since pools are not exported
as part of a normal shutdown.

Documentation was updated accordingly.

Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Arkadiusz Bubała <arkadiusz.bubala@open-e.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes openzfs/spl#648
Closes #6753
FransUrbo pushed a commit to FransUrbo/zfs that referenced this pull request Apr 28, 2019
The only place vn_rename and vn_remove are used is when writing
out an updated pool configuration file.  By truncating the file
instead of renaming and removing it we can avoid having to implement
these interfaces entirely.  Functionally an empty cache file is
treated the same as a missing cache file.  This is particularly
advantageous because the Linux kernel has never provided a way
to reliably implement vn_rename and vn_remove.

The cachefile_004_pos.ksh test case was updated to understand
that an empty cache file is the same as a missing one.

The zfs-import-* systemd service files were not updated to use
ConditionFileNotEmpty in place of ConditionPathExists.  This
means that after exporting all pools and rebooting new pools
will not the scanned for on the next boot.  This small change
should not impact normal usage since pools are not exported
as part of a normal shutdown.

Documentation was updated accordingly.

Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Arkadiusz Bubała <arkadiusz.bubala@open-e.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes openzfs/spl#648 
Closes openzfs#6753
@behlendorf behlendorf deleted the vn-rename-remove branch April 19, 2021 19:31
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3 participants