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Brian Behlendorf bb25362553 Prevent zdb(8) from occasionally hanging on I/O 
The zdb(8) command may not terminate in the case where the pool
gets suspended and there is a caller in zio_wait() blocking on
an outstanding read I/O that will never complete.  This can in
turn cause ztest(1) to block indefinitely despite the deadman.

Resolve the issue by setting the default failure mode for zdb(8)
to panic.  In user space we always want the command to terminate
when forward progress is no longer possible.

Reviewed-by: Tim Chase <tim@chase2k.com>
Reviewed by: Thomas Caputi <tcaputi@datto.com>
Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #6999
2018-01-25 13:41:51 -08:00
.github Reduce codecov PR comments 2018-01-09 11:15:55 -08:00
cmd Prevent zdb(8) from occasionally hanging on I/O 2018-01-25 13:41:51 -08:00
config Fix Debian packaging on ARMv7/ARM64 2018-01-18 10:15:41 -08:00
contrib Run zfs load-key if needed in dracut 2018-01-18 10:20:34 -08:00
etc Run zfs load-key if needed in dracut 2018-01-18 10:20:34 -08:00
include Extend deadman logic 2018-01-25 13:40:38 -08:00
lib OpenZFS 8652 - Tautological comparisons with ZPROP_INVAL 2018-01-19 09:22:37 -08:00
man Extend deadman logic 2018-01-25 13:40:38 -08:00
module Extend deadman logic 2018-01-25 13:40:38 -08:00
rpm Force ztest to always use /dev/urandom 2018-01-12 09:36:26 -08:00
scripts Extend deadman logic 2018-01-25 13:40:38 -08:00
tests Extend deadman logic 2018-01-25 13:40:38 -08:00
udev Fix spelling 2017-01-03 11:31:18 -06:00
.gitignore Add configure option to enable gcov analysis 2017-09-15 10:24:13 -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 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 Extend deadman logic 2018-01-25 13:40:38 -08:00
copy-builtin Fix copy-builtin to work with ASAN patch 2018-01-12 09:39:36 -08:00
COPYRIGHT Encryption patch follow-up 2017-10-11 16:54:48 -04:00
DISCLAIMER Fix minor typos and update marketing copy. 2013-03-21 12:51:06 -07:00
Makefile.am Update for cppcheck v1.80 2017-11-18 14:08:00 -08:00
META Tag zfs-0.7.0 2017-07-26 10:13:25 -07:00
OPENSOLARIS.LICENSE Add CDDL license file 2008-12-01 14:49:34 -08:00
README.markdown Add scan.coverity.com badge to README 2017-10-30 16:21:24 -07:00
TEST Refresh TEST file to include new variables 2017-11-08 11:09:30 -08:00
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.