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Olaf Faaland 3eef58c9b6 module param callbacks check for initialized spa 
Callbacks provided for module parameters are executed both
after the module is loaded, when a user alters it via sysfs, e.g
	echo bar > /sys/modules/zfs/parameters/foo

as well as when the module is loaded with an argument, e.g.
	modprobe zfs foo=bar

In the latter case, the init functions likely have not run yet,
including spa_init() which initializes the namespace lock so it is safe
to use.

Instead of immediately taking the namespace lock and attemping to
iterate over initialized spa structures, check whether spa_mode_global
is nonzero.  This is set by spa_init() after it has initialized the
namespace lock.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Tim Chase <tim@chase2k.com>
Signed-off-by: Olaf Faaland <faaland1@llnl.gov>
Closes #7496 
Closes #7521
2018-07-06 02:46:51 -07:00
.github Update codecov.yml 2018-03-14 16:10:36 -07:00
cmd Fedora 28: Fix misc bounds check compiler warnings 2018-05-07 17:19:57 -07:00
config Linux compat 4.18: check_disk_size_change() 2018-07-06 02:46:51 -07:00
contrib modprobe zfs during dracut mount 2018-05-07 17:19:57 -07:00
etc chmod -x on etc/init.d/zfs-*.in automake files 2018-05-07 17:19:57 -07:00
include Fix ENOSPC in "Handle zap_add() failures in ..." 2018-07-06 02:46:51 -07:00
lib Linux 4.18 compat: inode timespec -> timespec64 2018-07-06 02:46:51 -07:00
man Add back iostat -y or -w descriptions 2018-05-07 17:19:57 -07:00
module module param callbacks check for initialized spa 2018-07-06 02:46:51 -07:00
rpm Tag zfs-0.7.9 2018-05-08 13:33:38 -07:00
scripts Fix free memory calculation on v3.14+ 2018-03-14 16:10:37 -07:00
tests Fix ENOSPC in "Handle zap_add() failures in ..." 2018-07-06 02:46:51 -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 Fix ENOSPC in "Handle zap_add() failures in ..." 2018-07-06 02:46:51 -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-0.7.9 2018-05-08 13:33:38 -07:00
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.