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doc/rados/operations/health-checks: document bluestore spurious read

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errors alert.

Signed-off-by: Igor Fedotov <ifedotov@suse.com>
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Igor Fedotov 2020-02-04 19:19:03 +03:00
parent 38103582d4
commit deb0af6347
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doc/rados/operations/health-checks.rst
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@ -530,6 +530,28 @@ are correctly installed and that the OSD daemon(s) have been
restarted. If the problem persists, check the OSD log for any clues
as to the source of the problem.
BLUESTORE_SPURIOUS_READ_ERRORS
______________________________
One or more OSDs using BlueStore detects spurious read errors at main device.
BlueStore has recovered from these errors by retrying disk reads.
Though this might show some issues with underlying hardware, I/O subsystem,
etc.
Which theoretically might cause permanent data corruption.
Some observations on the root cause can be found at
https://tracker.ceph.com/issues/22464
This alert doesn't require immediate response but corresponding host might need
additional attention, e.g. upgrading to the latest OS/kernel versions and
H/W resource utilization monitoring.
This warning can be disabled on all OSDs with::
ceph config set osd bluestore_warn_on_spurious_read_errors false
Alternatively, it can be disabled on a specific OSD with::
ceph config set osd.123 bluestore_warn_on_spurious_read_errors false
Device health