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Paul Dagnelie 475aa97cab Prevent metaslab_sync panic due to spa_final_dirty_txg 
If a pool enables the SPACEMAP_HISTOGRAM feature shortly before being
exported, we can enter a situation that causes a kernel panic. Any metaslabs
that are loaded during the final dirty txg and haven't already been condensed
will cause metaslab_sync to proceed after the final dirty txg so that the
condense can be performed, which there are assertions to prevent. Because of
the nature of this issue, there are a number of ways we can enter this
state. Rather than try to prevent each of them one by one, potentially missing
some edge cases, we instead cut it off at the point of intersection; by
preventing metaslab_sync from proceeding if it would only do so to perform a
condense and we're past the final dirty txg, we preserve the utility of the
existing asserts while preventing this particular issue.

Reviewed-by: Matt Ahrens <matt@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Paul Dagnelie <pcd@delphix.com>
Closes #9185
Closes #9186
Closes #9231
Closes #9253
2019-08-30 09:28:31 -07:00
.github Update CONTRIBUTING to point users to IRC as well as mailing list 2019-03-13 11:57:57 -07:00
cmd Fix automake program name transformations 2019-08-20 17:46:40 -04:00
config Minor style cleanup 2019-07-16 17:22:31 -07:00
contrib Fix Plymouth passphrase prompt in initramfs script 2019-08-27 13:44:02 -07:00
etc etc/init.d/zfs-functions.in: remove arch warning 2019-08-29 13:14:48 -07:00
include Keep more metaslabs loaded 2019-08-29 10:20:36 -07:00
lib zfs_handle used after being closed/freed in change_one callback 2019-08-28 15:02:58 -07:00
man Keep more metaslabs loaded 2019-08-29 10:20:36 -07:00
module Prevent metaslab_sync panic due to spa_final_dirty_txg 2019-08-30 09:28:31 -07:00
rpm initramfs: fixes for (debian) initramfs 2019-08-16 09:02:32 -06:00
scripts Split argument list, satisfy shellcheck SC2086 2019-08-25 18:30:39 -07:00
tests Prevent metaslab_sync panic due to spa_final_dirty_txg 2019-08-30 09:28:31 -07:00
udev Restore :: in Makefile.am 2019-08-26 11:48:31 -07:00
.gitignore Linux 5.3 compat: Makefile subdir-m no longer supported 2019-08-19 15:22:52 -07:00
.gitmodules Add zimport.sh compatibility test script 2014-02-21 12:10:31 -08:00
.travis.yml Add .travis.yml 2017-11-13 09:18:18 -08:00
AUTHORS Update build system and packaging 2018-05-29 16:00:33 -07:00
autogen.sh Cause autogen.sh to fail if autoreconf fails 2018-07-06 09:27:37 -07:00
CODE_OF_CONDUCT.md Add CODE_OF_CONDUCT.md 2019-04-30 10:58:45 -07:00
configure.ac Add channel program for property based snapshots 2019-07-30 16:02:19 -07:00
copy-builtin Allow copy-builtin to work with modified sources 2018-10-17 12:06:05 -07:00
COPYRIGHT Update build system and packaging 2018-05-29 16:00:33 -07:00
LICENSE Update build system and packaging 2018-05-29 16:00:33 -07:00
Makefile.am Restore :: in Makefile.am 2019-08-26 11:48:31 -07:00
META Tag 0.8.0 2019-05-21 11:11:41 -07:00
NEWS Add NEWS file 2018-09-18 12:03:47 -07:00
NOTICE Update build system and packaging 2018-05-29 16:00:33 -07:00
README.md Explicitly state supported Linux versions 2018-05-30 20:11:19 -07:00
TEST Update build system and packaging 2018-05-29 16:00:33 -07:00
zfs.release.in Move zfs.release generation to configure step 2012-07-12 12:22:51 -07:00

README.md

img

ZFS on Linux is an advanced file system and volume manager which was originally developed for Solaris and is now maintained by the OpenZFS community.

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Official Resources

Installation

Full documentation for installing ZoL on your favorite Linux distribution can be found at our site.

Contribute & Develop

We have a separate document with contribution guidelines.

Release

ZFS on Linux is released under a CDDL license.
For more details see the NOTICE, LICENSE and COPYRIGHT files; UCRL-CODE-235197

Supported Kernels

  • The META file contains the officially recognized supported kernel versions.