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George Amanakis 2c210f6818
Fix ASSERT logic in l2arc_evict()
In case of cache device removal it is possible that at the end of
l2arc_evict() we have l2ad_hand = l2ad_evict. This can lead to the
following panic in case of a debug build:

VERIFY3(dev->l2ad_hand < dev->l2ad_evict) failed (321920512 < 321920512)
Call Trace:
 dump_stack+0x66/0x90
 spl_panic+0xef/0x117 [spl]
 l2arc_remove_vdev+0x11d/0x290 [zfs]
 spa_load_l2cache+0x275/0x5b0 [zfs]
 spa_vdev_remove+0x4a5/0x6e0 [zfs]
 zfs_ioc_vdev_remove+0x59/0xa0 [zfs]
 zfsdev_ioctl_common+0x5b3/0x630 [zfs]
 zfsdev_ioctl+0x53/0xe0 [zfs]
 do_vfs_ioctl+0x42e/0x6b0
 ksys_ioctl+0x5e/0x90
 do_syscall_64+0x5b/0x1a0
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

In case of cache device removal it also possible that l2ad_hand +
distance > l2ad_end since we do not iterate l2arc_evict() and l2ad_hand
is not reset. This has no functional consequence however as the cache
device is about to be removed.

Fix this by omitting the ASSERT in case of device removal.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: George Amanakis <gamanakis@gmail.com>
Closes #11205
2020-11-16 09:08:11 -08:00
.github Document branching structure 2020-09-28 13:23:49 -07:00
cmd zgenhostid: accept hostid arguments equal to zero. 2020-11-14 17:20:54 -08:00
config Linux 5.10 compat: revalidate_disk_size() added 2020-11-02 22:01:19 +00:00
contrib config/dracut/90zfs: handle cases where hostid(1) returns all zeros 2020-11-14 17:21:54 -08:00
etc Replace ZFS on Linux references with OpenZFS 2020-10-08 20:10:13 -07:00
include Linux: Fix ZFS_ENTER/ZFS_EXIT/ZFS_VERFY_ZP usage 2020-11-14 10:19:00 -08:00
lib Distributed Spare (dRAID) Feature 2020-11-13 13:51:51 -08:00
man zgenhostid: accept hostid arguments equal to zero. 2020-11-14 17:20:54 -08:00
module Fix ASSERT logic in l2arc_evict() 2020-11-16 09:08:11 -08:00
rpm Add zpool_influxdb command 2020-10-09 09:29:21 -07:00
scripts Distributed Spare (dRAID) Feature 2020-11-13 13:51:51 -08:00
tests Distributed Spare (dRAID) Feature 2020-11-13 13:51:51 -08:00
udev Centralize variable substitution 2020-07-14 17:33:44 -07:00
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.gitignore Add FreeBSD support to OpenZFS 2020-04-14 11:36:28 -07:00
.gitmodules Add zimport.sh compatibility test script 2014-02-21 12:10:31 -08:00
AUTHORS Add zstd support to zfs 2020-08-20 10:30:06 -07:00
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CODE_OF_CONDUCT.md Replace ZFS on Linux references with OpenZFS 2020-10-08 20:10:13 -07:00
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COPYRIGHT Fix typos 2020-06-09 21:24:09 -07:00
cppcheck-suppressions.txt Import ZStandard v1.4.5 2020-08-20 10:30:06 -07:00
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Makefile.am Fix commitcheck on FreeBSD 2020-10-20 08:35:53 -07:00
META Increase Supported Linux Kernel to 5.9 2020-10-13 09:51:13 -07:00
NEWS Fix NEWS file 2020-08-26 21:44:41 -07:00
NOTICE Update build system and packaging 2018-05-29 16:00:33 -07:00
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zfs.release.in Move zfs.release generation to configure step 2012-07-12 12:22:51 -07:00

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OpenZFS is an advanced file system and volume manager which was originally developed for Solaris and is now maintained by the OpenZFS community. This repository contains the code for running OpenZFS on Linux and FreeBSD.

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Full documentation for installing OpenZFS on your favorite operating system can be found at the Getting Started Page.

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

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  • The META file contains the officially recognized supported Linux kernel versions.
  • Supported FreeBSD versions are 12-STABLE and 13-CURRENT.