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Enhancement #68881

closed

Speed up ceph-bluestore-tool show-label command

Added by Adam Kupczyk over 1 year ago. Updated 5 months ago.

Status:
Resolved
Priority:
Low
Assignee:
Jaya Prakash
Target version:
-
% Done:

0%

Source:
Backport:
Reviewed:
Affected Versions:
ceph-qa-suite:
Pull request ID:
60791
Tags (freeform):
Merge Commit:
3008ab452978e1bf406ef7ae9457e02342ea3f49
Fixed In:
v19.3.0-7575-g3008ab4529
Released In:
v20.2.0~1126
Upkeep Timestamp:
2025-11-01T01:15:23+00:00

Description

Replication recipe:

# ninja vstart ceph-bluestore-tool
# OSD=1 MON=1 FS=0 ../src/vstart.sh -l -n
# ../src/stop.sh 
# ./bin/ceph-bluestore-tool --dev dev/osd0/block show-label --debug_bdev=20/20 --log-to-stderr=true

The execution is very fast, except waiting for bdev to finish:

2024-11-08T19:58:20.125+0000 7ffff5cb6a80  1 bdev(0x5555568ca000 dev/osd0/block) open path dev/osd0/block
...
2024-11-08T19:58:20.126+0000 7ffff5cb6a80 10 bdev(0x5555568ca000 dev/osd0/block) _aio_stop
2024-11-08T19:58:20.376+0000 7ffff4c30640 10 bdev(0x5555568ca000 dev/osd0/block) _aio_thread end

The improvement should be to cut this last 200ms.
We have this delay for a long time, but in recent versions of ceph-volume tool tenths of devices are probed at once, amassing to multiple seconds of idle delay.

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 #1

Updated by Yaarit Hatuka over 1 year ago

  • Assignee changed from Adam Kupczyk to Jaya Prakash
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 #2

Updated by Jaya Prakash over 1 year ago

  • Status changed from New to Fix Under Review
  • Pull request ID set to 60791
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 #3

Updated by Jaya Prakash about 1 year ago

  • Status changed from Fix Under Review to Resolved
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 #4

Updated by Upkeep Bot 9 months ago

  • Merge Commit set to 3008ab452978e1bf406ef7ae9457e02342ea3f49
  • Fixed In set to v19.3.0-7575-g3008ab45297
  • Upkeep Timestamp set to 2025-07-10T08:43:47+00:00
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 #5

Updated by Upkeep Bot 8 months ago

  • Fixed In changed from v19.3.0-7575-g3008ab45297 to v19.3.0-7575-g3008ab4529
  • Upkeep Timestamp changed from 2025-07-10T08:43:47+00:00 to 2025-07-14T19:38:33+00:00
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 #6

Updated by Upkeep Bot 5 months ago

  • Released In set to v20.2.0~1126
  • Upkeep Timestamp changed from 2025-07-14T19:38:33+00:00 to 2025-11-01T01:15:23+00:00
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