[LU-18662] wait_delete_completed() fstrim can be very noisy

• Type: Improvement
• Resolution: Unresolved
• Priority: Minor
• Affects Version/s: Lustre 2.16.0
• Labels: easy
• Severity: 3
• Assignee: Alex Zhuravlev
• Reporter: Andreas Dilger

Description

When wait_delete_completed() is run, this can be very noisy if fstrim is not supported on the device:

CMD: trevis-76vm5 fstrim -v /mnt/lustre-ost1
CMD: trevis-76vm5 fstrim -v /mnt/lustre-ost2
CMD: trevis-76vm5 fstrim -v /mnt/lustre-ost5
CMD: trevis-76vm5 fstrim -v /mnt/lustre-ost3
:
trevis-76vm5: fstrim: /mnt/lustre-ost7: the discard operation is not supported
pdsh@trevis-80vm4: trevis-76vm5: ssh exited with exit code 1
trevis-76vm5: fstrim: /mnt/lustre-ost5: the discard operation is not supported
pdsh@trevis-80vm4: trevis-76vm5: ssh exited with exit code 1
trevis-76vm5: fstrim: /mnt/lustre-ost4: the discard operation is not supported
pdsh@trevis-80vm4: trevis-76vm5: ssh exited with exit code 1
trevis-76vm5: fstrim: /mnt/lustre-ost2: the discard operation is not supported
pdsh@trevis-80vm4: trevis-76vm5: ssh exited with exit code 1
:

If fstrim is not working on a device, then autotest should remember this and not try to trim the device over and over again.

Issue Links

• is related to: LU-17722 wait_delete_completed() to trim underlying fs backed by tmpfs