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Olaf Faaland 0801e4e5c9 Initialize mmp_last_write when the mmp thread starts (#10912) 
A great deal of time may go by between when mmp_init() is called and
the MMP thread starts, particularly if there are bad devices, because
there is I/O checking configs etc.  If this time is too long,

    (gethrtime() - mmp_last_write) > mmp_fail_ns

at the time the MMP thread starts.  If MMP is configured to suspend
the pool, the pool will be suspended immediately.

This can be seen in issue #10838

The value of mmp_last_write doesn't matter before the mmp thread
starts.  To give the MMP thread time to issue and land MMP writes,
initialize mmp_last_write when the MMP thread starts.

Reviewed-by: Giuseppe Di Natale <guss80@gmail.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Olaf Faaland <faaland1@llnl.gov>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Closes #10873
2020-09-16 00:16:47 +00:00
.github Fix typos 2020-01-22 13:49:00 -08:00
cmd Fix gcc 10.1 stringop-truncation error 2020-09-15 21:16:58 +00:00
config Linux 5.9 compat: NR_SLAB_RECLAIMABLE (#10865) 2020-09-15 21:16:58 +00:00
contrib Fix zfs-functions packaging bug 2020-05-12 10:53:32 -07:00
etc Fix zfs-functions packaging bug 2020-05-12 10:53:32 -07:00
include Appease GCC sprintf warnings found on Fedora 32/GCC 10.0.1 2020-09-15 23:43:12 +00:00
lib Appease GCC sprintf warnings found on Fedora 32/GCC 10.0.1 2020-09-15 23:43:12 +00:00
man ICP: Improve AES-GCM performance 2020-05-12 10:53:32 -07:00
module Initialize mmp_last_write when the mmp thread starts (#10912) 2020-09-16 00:16:47 +00:00
rpm lib/libzfs, rpm: Install pkgconfig files in the correct directory (#10628) 2020-09-15 21:16:58 +00:00
scripts Fix typos 2020-01-22 13:49:00 -08:00
tests ICP: Improve AES-GCM performance 2020-05-12 10:53:32 -07:00
udev Restore :: in Makefile.am 2020-05-12 10:53:32 -07:00
.gitignore Adapt gitignore for modules 2020-01-22 13:49:05 -08:00
.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 Linux 5.9 compat: add linux/blkdev.h include 2020-09-15 21:16:58 +00:00
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 zfs-functions packaging bug 2020-05-12 10:53:32 -07:00
copy-builtin Allow copy-builtin to work with modified sources 2018-10-17 12:06:05 -07:00
COPYRIGHT ICP: Improve AES-GCM performance 2020-05-12 10:53:32 -07:00
LICENSE Update build system and packaging 2018-05-29 16:00:33 -07:00
Makefile.am Perform KABI checks in parallel 2020-01-22 13:49:01 -08:00
META Tag zfs-0.8.4 2020-05-12 10:53:32 -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

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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.