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Isaac Huang 3d6da72d18 Skip spurious resilver IO on raidz vdev
On a raidz vdev, a block that does not span all child vdevs, excluding
its skip sectors if any, may not be affected by a child vdev outage or
failure. In such cases, the block does not need to be resilvered.
However, current resilver algorithm simply resilvers all blocks on a
degraded raidz vdev. Such spurious IO is not only wasteful, but also
adds the risk of overwriting good data.

This patch eliminates such spurious IOs.

Reviewed-by: Gvozden Neskovic <neskovic@gmail.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Signed-off-by: Isaac Huang <he.huang@intel.com>
Closes #5316
2017-05-12 17:28:03 -07:00
.github Commit message format in contributing guidelines 2017-03-31 09:33:38 -07:00
cmd Enable additional test cases 2017-05-11 14:27:57 -07:00
config Linux 4.12 compat: CURRENT_TIME removed 2017-05-10 09:30:48 -07:00
contrib Fix initramfs hook for merged /usr/lib and /lib 2017-02-27 12:03:23 -08:00
etc OpenZFS 7793 - ztest fails assertion in dmu_tx_willuse_space 2017-03-07 09:51:59 -08:00
include Skip spurious resilver IO on raidz vdev 2017-05-12 17:28:03 -07:00
lib Add property overriding (-o|-x) to 'zfs receive' 2017-05-09 16:21:09 -07:00
man Add property overriding (-o|-x) to 'zfs receive' 2017-05-09 16:21:09 -07:00
module Skip spurious resilver IO on raidz vdev 2017-05-12 17:28:03 -07:00
rpm Fix zfs .deb package warning in prerm script 2017-05-09 11:51:40 -07:00
scripts Enable additional test cases 2017-05-11 14:27:57 -07:00
tests Enable additional test cases 2017-05-11 14:27:57 -07:00
udev Fix spelling 2017-01-03 11:31:18 -06:00
.gitignore OpenZFS 7290 - ZFS test suite needs to control what utilities it can run 2017-04-06 09:25:36 -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 OpenZFS 7503 - zfs-test should tail ::zfs_dbgmsg on test failure 2017-04-12 13:36:48 -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 Prebaked scripts for zpool status/iostat -c 2017-04-21 09:27:04 -07:00
META Tag 0.7.0-rc4 2017-05-05 10:33:40 -07:00
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 Amazon Linux 2017-04-06 17:15:30 -07:00
zfs-script-config.sh.in Prebaked scripts for zpool status/iostat -c 2017-04-21 09:27:04 -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.