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Alex Zhuravlev 129e3e8dc3 Use zap_count instead of cached z_size for unlink
As a performance optimization Lustre does not strictly update
the SA_ZPL_SIZE when adding/removing from non-directory entries.
This results in entries which cannot be removed through the ZPL
layer even though the ZAP is empty and safe to remove.

Resolve this issue by checking the zap_count() directly instead
on relying on the cached SA_ZPL_SIZE.  Micro-benchmarks show no
significant performance impact due to the additional overhead
of using zap_count().

Reviewed-by: Olaf Faaland <faaland1@llnl.gov>
Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Signed-off-by: Alex Zhuravlev <alexey.zhuravlev@intel.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #7019
2018-01-30 10:27:31 -06:00
.github Update for cppcheck v1.80 2018-01-30 10:27:31 -06:00
cmd zhack: fix getopt return type 2018-01-30 10:27:31 -06:00
config Support integration with new QAT products 2017-11-20 16:19:23 -06:00
contrib Add /usr/bin/env to COPY_EXEC_LIST initramfs hook 2017-12-04 17:22:36 -08:00
etc Use /sbin/openrc-run for openrc init scripts 2018-01-30 10:27:30 -06:00
include Revert raidz_map and _col structure types 2018-01-30 10:27:31 -06:00
lib Update for cppcheck v1.80 2018-01-30 10:27:31 -06:00
man zpool(8): Fix "zpool import -t" 2017-12-04 17:21:38 -08:00
module Use zap_count instead of cached z_size for unlink 2018-01-30 10:27:31 -06:00
rpm Tag zfs-0.7.5 2017-12-18 10:57:47 -08:00
scripts OpenZFS 8794 - cstyle generates warnings with recent perl 2018-01-30 10:27:31 -06:00
tests Fix 'zpool add' handling of nested interior VDEVs 2018-01-30 10:27:31 -06:00
udev Fix spelling 2017-01-03 11:31:18 -06:00
.gitignore Improve gitignore 2017-05-25 10:14:13 -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 zgenhostid utility script 2017-07-25 13:22:03 -04:00
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 Update for cppcheck v1.80 2018-01-30 10:27:31 -06:00
META Tag zfs-0.7.5 2017-12-18 10:57:47 -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 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

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.