A prior commit included a udev check for MPATH_DEVICE_READY to
determine if a path was multipath when doing an autoreplace:
f2f6c18 zed: Misc multipath autoreplace fixes
However, MPATH_DEVICE_READY is not provided by the older version of
udev that's on Centos 7 (it is on Centos 8).
This patch instead looks for 'mpath-' in the UUID, which works on
both Centos 7 and 8.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Tony Hutter <hutter2@llnl.gov>
Closes#13222
We recently had a case where our operators replaced a bad
multipathed disk, only to see it fail to autoreplace. The
zed logs showed that the multipath replacement disk did not pass
the 'is_dm' test in zfs_process_add() even though it should have.
is_dm is set if there exists a sysfs entry for to the
underlying /dev/sd* paths for the multipath disk. It's
possible this path didn't exist due to a race condition where
the sysfs paths weren't created at the time the udev event came
in to zed, but this was never verified.
This patch updates the check to look for udev properties that
indicate if the new autoreplace disk is an empty multipath disk,
rather than looking for the underlying sysfs entries. It also
adds in additional logging, and fixes a bug where zed allowed
you to use an already zfs-formatted disk from another pool
as a multipath auto-replacement disk.
Furthermore, while testing this patch, I also ran across a case
where a force-faulted disk did not have a ZPOOL_CONFIG_PHYS_PATH
entry in its config. This prevented it from being autoreplaced.
I added additional logic to derive the PHYS_PATH from the PATH if
the PATH was a /dev/disk/by-vdev/ path. For example, if PATH
was /dev/disk/by-vdev/L28, then PHYS_PATH would be L28. This is
safe since by-vdev paths represent physical locations and do not
change between boots.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Tony Hutter <hutter2@llnl.gov>
Closes#13023
The ZED code currently can only turn on the fault LED for
a faulted disk in a JBOD enclosure. This extends support
for faulted NVMe disks as well.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Tony Hutter <hutter2@llnl.gov>
Closes#12648Closes#12695
Also always free tmp2 at the end
Before:
nabijaczleweli@tarta:~/uwu$ valgrind --leak-check=full ./blergh
==8947== Memcheck, a memory error detector
==8947== Using Valgrind-3.14.0 and LibVEX
==8947== Command: ./blergh
==8947==
(null)
==8947==
==8947== HEAP SUMMARY:
==8947== in use at exit: 23 bytes in 1 blocks
==8947== total heap usage: 3 allocs, 2 frees, 1,147 bytes allocated
==8947==
==8947== 23 bytes in 1 blocks are definitely lost in loss record 1 of 1
==8947== at 0x483577F: malloc (vg_replace_malloc.c:299)
==8947== by 0x48D74B7: vasprintf (vasprintf.c:73)
==8947== by 0x48B7833: asprintf (asprintf.c:35)
==8947== by 0x401258: zfs_get_enclosure_sysfs_path
(zutil_device_path_os.c:191)
==8947== by 0x401482: main (blergh.c:107)
==8947==
==8947== LEAK SUMMARY:
==8947== definitely lost: 23 bytes in 1 blocks
==8947== indirectly lost: 0 bytes in 0 blocks
==8947== possibly lost: 0 bytes in 0 blocks
==8947== still reachable: 0 bytes in 0 blocks
==8947== suppressed: 0 bytes in 0 blocks
==8947==
==8947== For counts of detected and suppressed errors, rerun with: -v
==8947== ERROR SUMMARY: 1 errors from 1 contexts (suppressed: 0 from 0)
nabijaczleweli@tarta:~/uwu$ sed -n 191p zutil_device_path_os.c
tmpsize = asprintf(&tmp1, "/sys/block/%s/device", dev_name);
After:
nabijaczleweli@tarta:~/uwu$ valgrind --leak-check=full ./blergh
==9512== Memcheck, a memory error detector
==9512== Using Valgrind-3.14.0 and LibVEX
==9512== Command: ./blergh
==9512==
(null)
==9512==
==9512== HEAP SUMMARY:
==9512== in use at exit: 0 bytes in 0 blocks
==9512== total heap usage: 3 allocs, 3 frees, 1,147 bytes allocated
==9512==
==9512== All heap blocks were freed -- no leaks are possible
==9512==
==9512== For counts of detected and suppressed errors, rerun with: -v
==9512== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 0 from 0)
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes#11993
For example, this would happily return "/dev/(null)" for /dev/sda1
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes#11935
As found by
git grep -E '(open|setmntent|pipe2?)\(' |
grep -vE '((zfs|zpool)_|fd|dl|lzc_re|pidfile_|g_)open\('
FreeBSD's pidfile_open() says nothing about the flags of the files it
opens, but we can't do anything about it anyway; the implementation does
open all files with O_CLOEXEC
Consider this output with zpool.d/media appended with
"pid=$$; (ls -l /proc/$pid/fd > /dev/tty)":
$ /sbin/zpool iostat -vc media
lrwx------ 0 -> /dev/pts/0
l-wx------ 1 -> 'pipe:[3278500]'
l-wx------ 2 -> /dev/null
lrwx------ 3 -> /dev/zfs
lr-x------ 4 -> /proc/31895/mounts
lrwx------ 5 -> /dev/zfs
lr-x------ 10 -> /usr/lib/zfs-linux/zpool.d/media
vs
$ ./zpool iostat -vc vendor,upath,iostat,media
lrwx------ 0 -> /dev/pts/0
l-wx------ 1 -> 'pipe:[3279887]'
l-wx------ 2 -> /dev/null
lr-x------ 10 -> /usr/lib/zfs-linux/zpool.d/media
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes#11866
A multpathed disk will have several 'underlying' paths to the disk. For
example, multipath disk 'dm-0' may be made up of paths:
/dev/{sda,sdb,sdc,sdd}. On many enclosures those underlying sysfs
paths will have a symlink back to their enclosure device entry
(like 'enclosure_device0/slot1'). This is used by the
statechange-led.sh script to set/clear the fault LED for a disk, and
by 'zpool status -c'.
However, on some enclosures, those underlying paths may not all have
symlinks back to the enclosure device. Maybe only two out of four
of them might.
This patch updates zfs_get_enclosure_sysfs_path() to favor returning
paths that have symlinks back to their enclosure devices, rather
than just returning the first path.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Tony Hutter <hutter2@llnl.gov>
Closes#11617
The horrible effects of human slavery continue to impact society. The
casual use of the term "slave" in computer software is an unnecessary
reference to a painful human experience.
This commit removes all possible references to the term "slave".
Implementation notes:
The zpool.d/slaves script is renamed to dm-deps, which uses the same
terminology as `dmsetup deps`.
References to the `/sys/class/block/$dev/slaves` directory remain. This
directory name is determined by the Linux kernel. Although
`dmsetup deps` provides the same information, it unfortunately requires
elevated privileges, whereas the `/sys/...` directory is world-readable.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Signed-off-by: Matthew Ahrens <mahrens@delphix.com>
Closes#10435
On Linux the full path preceding devices is stripped when formatting
vdev names. On FreeBSD we only want to strip "/dev/". Hide the
implementation details of path stripping behind zfs_strip_path().
Make zfs_strip_partition_path() static in Linux implementation while
here, since it is never used outside of the file it is defined in.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ryan Moeller <ryan@ixsystems.com>
Closes#9565
Factor Linux specific functionality out of libzutil.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Matt Macy <mmacy@FreeBSD.org>
Signed-off-by: Ryan Moeller <ryan@ixsystems.com>
Closes#9356
Tony Hutter
наб
Matthew Ahrens
Ryan Moeller
Matthew Macy