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Olaf Faaland c17922b8a9 Detect long config lock acquisition in mmp 
If something holds the config lock as a writer for too long, MMP will
fail to issue MMP writes in a timely manner.  This will result either in
the pool being suspended, or in an extreme case, in the pool not being
protected.

If the time to acquire the config lock exceeds 1/10 of the minimum
zfs_multihost_interval, report it in the zfs debug log.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Olaf Faaland <faaland1@llnl.gov>
Closes #7212
2018-03-14 16:10:38 -07:00
.github Update codecov.yml 2018-03-14 16:10:36 -07:00
cmd Fix some typos 2018-03-14 16:10:38 -07:00
config Linux 4.16 compat: get_disk_and_module() 2018-03-14 16:10:38 -07:00
contrib Fix some typos 2018-03-14 16:10:38 -07:00
etc Allow modprobe to fail when called within systemd 2018-03-14 16:10:37 -07:00
include Linux 4.16 compat: get_disk_and_module() 2018-03-14 16:10:38 -07:00
lib 'zfs receive' fails with "dataset is busy" 2018-03-14 16:10:37 -07:00
man Change checksum & IO delay ratelimit values 2018-03-14 16:10:38 -07:00
module Detect long config lock acquisition in mmp 2018-03-14 16:10:38 -07:00
rpm Fix systemd_ RPM macros usage on Debian-based distributions 2018-03-14 16:10:36 -07:00
scripts Fix free memory calculation on v3.14+ 2018-03-14 16:10:37 -07:00
tests Fix some typos 2018-03-14 16:10:38 -07:00
udev Fix spelling 2017-01-03 11:31:18 -06:00
.gitignore Add configure option to enable gcov analysis 2018-03-14 16:10:36 -07:00
.gitmodules Add zimport.sh compatibility test script 2014-02-21 12:10:31 -08:00
AUTHORS Add a missing > to AUTHORS 2014-09-02 14:18:53 -07:00
autogen.sh build: do not call boilerplate ourself 2013-04-02 10:55:20 -07:00
configure.ac Add support for "--enable-code-coverage" option 2018-03-14 16:10:36 -07:00
copy-builtin Allow c99 when building ZFS in the kernel tree 2017-03-27 12:31:15 -07:00
COPYRIGHT Update ZED copyright boilerplate 2015-05-11 15:07:00 -07:00
DISCLAIMER Fix minor typos and update marketing copy. 2013-03-21 12:51:06 -07:00
Makefile.am Add support for "--enable-code-coverage" option 2018-03-14 16:10:36 -07:00
META Tag zfs-0.7.6 2018-02-01 10:02:58 -08:00
OPENSOLARIS.LICENSE Add CDDL license file 2008-12-01 14:49:34 -08:00
README.markdown Update codecov.yml 2018-03-14 16:10:36 -07:00
TEST Retire filebench testing 2017-06-01 06:24:28 -07:00
zfs-script-config.sh.in zpool iostat/status -c improvements 2017-06-05 10:52:15 -07:00
zfs.release.in Move zfs.release generation to configure step 2012-07-12 12:22:51 -07:00

README.markdown

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.