** Changed in: zfs-linux (Ubuntu)
Assignee: Dimitri John Ledkov (xnox) => (unassigned)
** Changed in: zfs-linux (Ubuntu)
Status: Incomplete => Invalid
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** Changed in: zfs-linux (Ubuntu)
Assignee: Colin Ian King (colin-king) => Dimitri John Ledkov (xnox)
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https://bugs.launchpad.net/bugs/1889110
Title:
zfs pool lock
I would say this is still an open issue. There is a long discussion on
github about it and seems like there's currently no solution (yet?)
https://github.com/openzfs/zfs/issues/9130
** Bug watch added: github.com/openzfs/zfs/issues #9130
https://github.com/openzfs/zfs/issues/9130
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Probably not. System has been pretty stable lately and I haven't been
pushing it too hard either.
On Fri, Apr 9, 2021 at 10:35 AM Colin Ian King <1889...@bugs.launchpad.net>
wrote:
> Hi Rob, is this still an open issue?
>
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Hi Rob, is this still an open issue?
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Title:
zfs pool locks and see "INFO: task txg_sync:4307 blocked for more than
120 second
The write-back-throttling didn't do anything different.
I have not had an opportunity yet to power down the unit and install
extra fans directly on the card to see if that helps.
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Hi Rob, did the suggestions in comments #8 and #9 help?
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Title:
zfs pool locks and see "INFO: task txg_sync:4307 blocked for mor
So it may be that the write-back-throttling (wbt) for the underlying
devices is getting confused about the exact throttle rates are for these
devices and somehow getting stuck. It maybe worth experimenting by
disabling the throttling and seeing if this gets I/O working again.
For example, to disab
Hi Rob,
It may be worth exercising the raw device by performing a lot of random
I/O reads rather that via zfs, that way we can eliminate zfs out of the
equation to see if it's a controller or driver issue and not a zfs
error. That way we can at least use occams razor to remove a lot of
software co
Hi Colin,
It seems to happen on 2 different controllers (both LSI). I'm using the
9201-16e at the moment and it performs much faster overall, but doing
something like a zfs scrub on a pool still causes the resets and thus
zfs locks as part of those. Basically seems to be under heavy IO load.
Altho
** Changed in: zfs-linux (Ubuntu)
Importance: Undecided => Medium
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Title:
zfs pool locks and see "INFO: task txg_sync:4307 bl
@Rob, from the logs it does appear that you are seeing underlying issues
with the devices and the error is not in ZFS.
For example:
Aug 7 20:59:54 zfs-01 kernel: [26266.626836] blk_update_request: I/O error,
dev sdn, sector 5806167448 op 0x0:(READ) flags 0x700 phys_seg 1 prio class 0
Aug 7 20:
Can you double check the H/W and let me know if this resolves the ZFS
issue?
** Changed in: zfs-linux (Ubuntu)
Assignee: (unassigned) => Colin Ian King (colin-king)
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I was able to capture the attached log messages during the last time
window. I was doing a scrub on 2 different pools simultaneously.
This may not be related to zfs, but may be related to the mpt3sas driver
or the lsi card itself. It sort of looks to me like the mpt3sas driver
is resetting the lsi
Neither of those ring a bell. I'm trying to figure out how to reproduce
as the load was very minimal at the time. There might have been a copy
of a few large video files (15-50GB?)from 1 zfs array to another.
Is there a way to trigger a snapshot of top next time this happens?
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When this happens, do you see "arc prune" or "z_upgrade" processes in
top, using a lot of cpu?
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Title:
zfs pool locks and see "I
root@zfs-01:/# dpkg -l |grep -i zfs
ii libzfs2linux 0.8.3-1ubuntu12.2
amd64OpenZFS filesystem library for Linux
ii libzpool2linux 0.8.3-1ubuntu12.2
amd64OpenZFS pool library for Linux
ii zfs-auto-
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