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Tim Chase b81a3ddc32 Update deadman operation to better align with upstream OpenZFS
The deadman in ZoL didn't behave quite as it did in upstream
OpenZFS.  In addition to the 2 purposes for which OpenZFS used the
zfs_deadman_synctime_ms parameter, ZoL also used it to determine how
frequently the deadman would fire once it has been triggered.

This patch adds the zfs_deadman_checktime_ms parameter to control how
frequently the subsequent checks are performed.

The deadman is now disabled for suspended pools.

As had been the case, unlike upstream OpenZFS, ZoL will not panic when
a hung IO is detected.

The module parameter documentation has been upated to include the new
parameter and to better describe the operation of the deadmen.
    
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Signed-off-by: Tim Chase <tim@chase2k.com>
Closes #5695
2017-01-31 14:19:08 -08:00
.github Further work on Github usability (issue templates) 2017-01-03 15:01:48 -06:00
cmd OpenZFS 7280 - Allow changing global libzpool variables in zdb and ztest through command line 2017-01-31 10:13:10 -08:00
config Add -Wno-declaration-after-statement to KERNELCPPFLAGS 2017-01-28 12:12:25 -08:00
contrib Fix spelling 2017-01-03 11:31:18 -06:00
etc Fix zfs-share systemd unit file 2017-01-13 13:24:17 -08:00
include OpenZFS 7280 - Allow changing global libzpool variables in zdb and ztest through command line 2017-01-31 10:13:10 -08:00
lib OpenZFS 7745 - print error if lzc_* is called before libzfs_core_init 2017-01-31 10:48:45 -08:00
man Update deadman operation to better align with upstream OpenZFS 2017-01-31 14:19:08 -08:00
module Update deadman operation to better align with upstream OpenZFS 2017-01-31 14:19:08 -08:00
rpm Add -c to zpool iostat & status to run command 2016-11-29 14:45:38 -07:00
scripts OpenZFS 7348 - cstyle can't handle ellipsis on continuation line 2017-01-26 12:40:22 -08:00
tests Retire .write/.read file operations 2017-01-27 10:43:39 -08:00
udev Fix spelling 2017-01-03 11:31:18 -06:00
.gitignore Update .gitignore 2016-10-19 14:29:33 -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 test for chattr 2016-12-16 16:07:41 -08:00
copy-builtin Illumos Crypto Port module added to enable native encryption in zfs 2016-07-20 10:43:30 -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 Use cstyle -cpP in make cstyle check 2016-12-12 10:46:26 -08:00
META Tag 0.7.0-rc3 2017-01-20 10:18:28 -08:00
OPENSOLARIS.LICENSE Add CDDL license file 2008-12-01 14:49:34 -08:00
README.markdown Add CONTRIBUTING information and templates 2016-12-09 12:48:12 -07:00
TEST Skip xfstests on Ubuntu 16.04 and CentOS 7 2016-12-14 09:36:14 -08:00
zfs-script-config.sh.in Introduce tests for python scripts 2016-10-06 13:11:57 -07:00
zfs.release.in Move zfs.release generation to configure step 2012-07-12 12:22:51 -07:00

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

ZFS on Linux, which is also known as ZoL, is currently feature complete. It includes fully functional and stable SPA, DMU, ZVOL, and ZPL layers. And it's native!

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.