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loli10K bb1be77a35 Prevent user accounting on readonly pool 
Trying to mount a dataset from a readonly pool could inadvertently start
the user accounting upgrade task, leading to the following failure:

VERIFY3(tx->tx_threads == 2) failed (0 == 2)
PANIC at txg.c:680:txg_wait_synced()
Showing stack for process 2541
CPU: 2 PID: 2541 Comm: z_upgrade Tainted: P           O  3.16.0-4-amd64 #1 Debian 3.16.51-3
Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
Call Trace:
 [<0>] ? dump_stack+0x5d/0x78
 [<0>] ? spl_panic+0xc9/0x110 [spl]
 [<0>] ? dnode_next_offset+0x1d4/0x2c0 [zfs]
 [<0>] ? dmu_object_next+0x77/0x130 [zfs]
 [<0>] ? dnode_rele_and_unlock+0x4d/0x120 [zfs]
 [<0>] ? txg_wait_synced+0x91/0x220 [zfs]
 [<0>] ? dmu_objset_id_quota_upgrade_cb+0x10f/0x140 [zfs]
 [<0>] ? dmu_objset_upgrade_task_cb+0xe3/0x170 [zfs]
 [<0>] ? taskq_thread+0x2cc/0x5d0 [spl]
 [<0>] ? wake_up_state+0x10/0x10
 [<0>] ? taskq_thread_should_stop.part.3+0x70/0x70 [spl]
 [<0>] ? kthread+0xbd/0xe0
 [<0>] ? kthread_create_on_node+0x180/0x180
 [<0>] ? ret_from_fork+0x58/0x90
 [<0>] ? kthread_create_on_node+0x180/0x180

This patch updates both functions responsible for checking if we can
perform user accounting to verify the pool is not readonly.

Reviewed-by: Alek Pinchuk <apinchuk@datto.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: loli10K <ezomori.nozomu@gmail.com>
Closes #8424
2019-02-19 18:41:18 -08:00
.github Bump commit subject length to 72 characters 2019-01-08 09:23:05 -08:00
cmd zfs should optionally send holds 2019-02-15 12:41:38 -08:00
config Linux 5.0 compat: Fix bio_set_dev() 2019-01-28 10:11:45 -08:00
contrib ZVOLs should not be allowed to have children 2019-02-08 15:44:15 -08:00
etc ZFS mounted NFSv3 shares fail lock reclaims 2019-02-15 14:40:16 -08:00
include zfs should optionally send holds 2019-02-15 12:41:38 -08:00
lib Fix zdb crash 2019-02-19 11:15:22 -08:00
man zfs mount man page should document legacy behaviour 2019-02-19 11:10:57 -08:00
module Prevent user accounting on readonly pool 2019-02-19 18:41:18 -08:00
rpm Exclude test-runner.py from the rpmbuild shebang check 2019-01-28 10:11:45 -08:00
scripts OpenZFS 9185 - Enable testing over NFS in ZFS performance tests 2019-02-04 09:27:37 -08:00
tests Prevent user accounting on readonly pool 2019-02-19 18:41:18 -08:00
udev Add enclosure_symlinks option to vdev_id 2018-12-14 17:27:49 -08:00
.gitignore Verify .gitignore entries 2019-01-15 11:56:29 -08:00
.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 Update build system and packaging 2018-05-29 16:00:33 -07:00
autogen.sh Cause autogen.sh to fail if autoreconf fails 2018-07-06 09:27:37 -07:00
configure.ac Use ZFS version for pyzfs & drop unused reqs file 2019-01-08 15:56:42 -08:00
copy-builtin Allow copy-builtin to work with modified sources 2018-10-17 12:06:05 -07:00
COPYRIGHT Update build system and packaging 2018-05-29 16:00:33 -07:00
LICENSE Update build system and packaging 2018-05-29 16:00:33 -07:00
Makefile.am Verify .gitignore entries 2019-01-15 11:56:29 -08:00
META Tag 0.8.0-rc3 2019-01-14 12:40:42 -08:00
NEWS Add NEWS file 2018-09-18 12:03:47 -07:00
NOTICE Update build system and packaging 2018-05-29 16:00:33 -07:00
README.md Explicitly state supported Linux versions 2018-05-30 20:11:19 -07:00
TEST Update build system and packaging 2018-05-29 16:00:33 -07:00
zfs.release.in Move zfs.release generation to configure step 2012-07-12 12:22:51 -07:00

README.md

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.

Release

ZFS on Linux is released under a CDDL license.
For more details see the NOTICE, LICENSE and COPYRIGHT files; UCRL-CODE-235197

Supported Kernels

  • The META file contains the officially recognized supported kernel versions.