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Serapheim Dimitropoulos bbbe4b0a98 hdr_recl calls zthr_wakeup() on destroyed zthr 
There exists a race condition were hdr_recl() calls
zthr_wakeup() on a destroyed zthr. The timeline is the
following:

[1] hdr_recl() runs first and goes intro zthr_wakeup()
    because arc_initialized is set.
[2] arc_fini() is called by another thread, zeroes
    that flag, destroying the zthr, and goes into
    buf_init().
[3] hdr_recl() tries to enter the destroyed mutex
    and we blow up.

This patch ensures that the ARC's zthrs are not offloaded
any new work once arc_initialized is set and then destroys
them after all of the ARC state has been deleted.

Reviewed by: Matt Ahrens <matt@delphix.com>
Reviewed by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Serapheim Dimitropoulos <serapheim@delphix.com>
Closes #9047
2019-09-25 11:27:50 -07:00
.github Update CONTRIBUTING to point users to IRC as well as mailing list 2019-03-13 11:57:57 -07:00
cmd systemd encryption key support 2019-09-25 11:27:49 -07:00
config Minor style cleanup 2019-09-25 11:27:49 -07:00
contrib Fix out-of-tree build failures 2019-09-25 11:27:48 -07:00
etc systemd encryption key support 2019-09-25 11:27:49 -07:00
include Retire unused spl_{mutex,rwlock}_{init_fini} 2019-09-25 11:27:49 -07:00
lib Fix race in parallel mount's thread dispatching algorithm 2019-09-25 11:27:49 -07:00
man systemd encryption key support 2019-09-25 11:27:49 -07:00
module hdr_recl calls zthr_wakeup() on destroyed zthr 2019-09-25 11:27:50 -07:00
rpm pkg-utils python sitelib for SLES15 2019-09-25 11:27:49 -07:00
scripts Fix out-of-tree build failures 2019-09-25 11:27:48 -07:00
tests Fix ZTS killed processes detection 2019-09-25 11:27:49 -07:00
udev Add enclosure_symlinks option to vdev_id 2018-12-14 17:27:49 -08:00
.gitignore git ignore python 3.7 virtual environment directories 2019-03-25 15:05:26 -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 Fix out-of-tree build failures 2019-09-25 11:27:48 -07:00
copy-builtin Allow copy-builtin to work with modified sources 2018-10-17 12:06:05 -07:00
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LICENSE Update build system and packaging 2018-05-29 16:00:33 -07:00
Makefile.am Fix out-of-tree build failures 2019-09-25 11:27:48 -07:00
META Tag zfs-0.8.1 2019-06-14 09:43:18 -07:00
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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.