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Tom Caputi b1d217338a Raw receives must compress metadnode blocks 
Currently, the DMU relies on ZIO layer compression to free LO
dnode blocks that no longer have objects in them. However,
raw receives disable all compression, meaning that these blocks
can never be freed. In addition to the obvious space concerns,
this could also cause incremental raw receives to fail to mount
since the MAC of a hole is different from that of a completely
zeroed block.

This patch corrects this issue by adding a special case in
zio_write_compress() which will attempt to compress these blocks
to a hole even if ZIO_FLAG_RAW_ENCRYPT is set. This patch also
removes the zfs_mdcomp_disable tunable, since tuning it could
cause these same issues.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Tom Caputi <tcaputi@datto.com>
Closes #7198
2018-02-21 12:28:52 -08:00
.github Reduce codecov PR comments 2018-01-09 11:15:55 -08:00
cmd Fix coverity defects: zfs channel programs 2018-02-20 11:19:42 -08:00
config Fix config issues: frame size and headers 2018-02-15 12:58:23 -08:00
contrib contrib/initramfs: add missing conf.d/zfs 2018-02-12 11:40:00 -08:00
etc OpenZFS 7431 - ZFS Channel Programs 2018-02-08 15:28:18 -08:00
include Raw receives must compress metadnode blocks 2018-02-21 12:28:52 -08:00
lib OpenZFS 8940 - Sending an intra-pool resumable send stream may result in EXDEV 2018-02-14 14:35:04 -08:00
man Raw receives must compress metadnode blocks 2018-02-21 12:28:52 -08:00
module Raw receives must compress metadnode blocks 2018-02-21 12:28:52 -08:00
rpm Fix systemd_ RPM macros usage on Debian-based distributions 2018-02-02 13:50:42 -08:00
scripts OpenZFS 7431 - ZFS Channel Programs 2018-02-08 15:28:18 -08:00
tests Raw receives must compress metadnode blocks 2018-02-21 12:28:52 -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 Project Quota on ZFS 2018-02-13 14:54:54 -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 Verify ZFS Test Suite scripts executability 2018-02-07 12:43:24 -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.