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George Wilson aa7d06a98a Illumos #4101 finer-grained control of metaslab_debug 
Today the metaslab_debug logic performs two tasks:

- load all metaslabs on import/open
- don't unload metaslabs at the end of spa_sync

This change provides knobs for each of these independently.

References:
  https://illumos.org/issues/4101
  https://github.com/illumos/illumos-gate/commit/0713e23

Notes:

1) This is a small piece of the metaslab improvement patch from
Illumos. It was worth bringing over before the rest, since it's
low risk and it can be useful on fragmented pools (e.g. Lustre
MDTs). metaslab_debug_unload would give the performance benefit
of the old metaslab_debug option without causing unwanted delay
during pool import.

Ported-by: Ned Bass <bass6@llnl.gov>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #2227
2014-05-06 09:46:04 -07:00
cmd ztest: Switch to LWP rwlock interface 2014-05-01 15:53:58 -07:00
config Refactor inode_owner_or_capable() autotools check 2014-05-01 10:06:49 -07:00
dracut Refresh dracut module setup 2013-03-21 12:51:06 -07:00
etc Remove SELinux enforcing check from init scripts 2014-05-02 11:37:46 -07:00
include libspl: Implement LWP rwlock interface 2014-05-01 15:53:52 -07:00
lib libspl: Implement LWP rwlock interface 2014-05-01 15:53:52 -07:00
man Illumos #4101 finer-grained control of metaslab_debug 2014-05-06 09:46:04 -07:00
module Illumos #4101 finer-grained control of metaslab_debug 2014-05-06 09:46:04 -07:00
patches Adding grub2 mkconfig support patch 2012-07-30 16:17:23 -07:00
rpm Initial implementation of zed (ZFS Event Daemon) 2014-04-02 13:10:03 -07:00
scripts Various zimport.sh fixes 2014-04-17 09:30:55 -07:00
udev Open pools asynchronously after module load 2013-07-03 09:24:38 -07:00
.gitignore Ignore *.{deb,rpm,tar.gz} files in the top directory. 2013-04-24 16:18:59 -07:00
.gitmodules Add zimport.sh compatibility test script 2014-02-21 12:10:31 -08:00
AUTHORS Fix minor typos and update marketing copy. 2013-03-21 12:51:06 -07:00
autogen.sh build: do not call boilerplate ourself 2013-04-02 10:55:20 -07:00
configure.ac Initial implementation of zed (ZFS Event Daemon) 2014-04-02 13:10:03 -07:00
copy-builtin Consistent menuconfig name 2012-08-26 13:49:37 -07:00
COPYRIGHT Refresh links to web site 2013-03-06 15:46:41 -08:00
DISCLAIMER Fix minor typos and update marketing copy. 2013-03-21 12:51:06 -07:00
Makefile.am cstyle: Exclude several files from 'make checkstyle' 2013-12-18 16:46:35 -08:00
META Tag zfs-0.6.2 2013-08-22 13:33:26 -07:00
OPENSOLARIS.LICENSE Add CDDL license file 2008-12-01 14:49:34 -08:00
README.markdown Fix minor typos and update marketing copy. 2013-03-21 12:51:06 -07:00
zfs-script-config.sh.in Initial implementation of zed (ZFS Event Daemon) 2014-04-02 13:10:03 -07:00
zfs.release.in Move zfs.release generation to configure step 2012-07-12 12:22:51 -07:00

README.markdown

Native ZFS for Linux!

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.

Full documentation for installing ZoL on your favorite Linux distribution can be found at: http://zfsonlinux.org