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Bug #24855

mds: reduce debugging for missing inodes during subtree migration

Added by Patrick Donnelly 5 months ago. Updated 4 months ago.

Status:
Resolved
Priority:
Urgent
Category:
-
Target version:
Start date:
07/10/2018
Due date:
% Done:

0%

Source:
Development
Tags:
Backport:
mimic,luminous
Regression:
No
Severity:
3 - minor
Reviewed:
Affected Versions:
ceph-qa-suite:
Component(FS):
MDS
Labels (FS):
Pull request ID:

Description

We often see:

2018-07-03 03:10:20.042188 7fc717bf9700  1 mds.0.locker
handle_client_caps on unknown ino 0x10014248370, dropping
2018-07-03 03:10:20.042191 7fc717bf9700  1 mds.0.locker
handle_client_caps on unknown ino 0x1001424a92f, dropping
2018-07-03 03:10:20.042195 7fc717bf9700  1 mds.0.locker
handle_client_caps on unknown ino 0x100142088f0, dropping
2018-07-03 03:10:20.042199 7fc717bf9700  1 mds.0.locker
handle_client_caps on unknown ino 0x1001424bd21, dropping
2018-07-03 03:10:20.042201 7fc717bf9700  1 mds.0.locker
handle_client_caps on unknown ino 0x10014250aa7, dropping
2018-07-03 03:10:20.042205 7fc717bf9700  1 mds.0.locker
handle_client_caps on unknown ino 0x1001420892b, dropping
2018-07-03 03:10:20.042207 7fc717bf9700  1 mds.0.locker
handle_client_caps on unknown ino 0x1001424804b, dropping
2018-07-03 03:10:20.042211 7fc717bf9700  1 mds.0.locker
handle_client_caps on unknown ino 0x10014253b43, dropping
2018-07-03 03:10:20.042215 7fc717bf9700  1 mds.0.locker
handle_client_caps on unknown ino 0x10014247786, dropping
2018-07-03 03:10:20.042221 7fc717bf9700  1 mds.0.locker
handle_client_caps on unknown ino 0x10014246826, dropping
2018-07-03 03:10:20.042225 7fc717bf9700  1 mds.0.locker
handle_client_caps on unknown ino 0x1001424908f, dropping
2018-07-03 03:10:20.042228 7fc717bf9700  1 mds.0.locker
handle_client_caps on unknown ino 0x100142496b9, dropping

as a normal consequence of subtree migration. From Zheng:

"handle_client_caps on unknown ino xxx” is normal after migrating a subtree

Sequence of events that cause this are:

- client sends caps message to mds.a
- mds finishes subtree migration, send cap export to client
- mds trim its cache
- mds receives cap messages from client

Raise debugging of this message so it doesn't flood the log.


Related issues

Copied to fs - Backport #25041: luminous: mds: reduce debugging for missing inodes during subtree migration Resolved
Copied to fs - Backport #25042: mimic: mds: reduce debugging for missing inodes during subtree migration Resolved

History

#1 Updated by Patrick Donnelly 5 months ago

  • Status changed from New to Need Review
  • Assignee changed from Zheng Yan to Patrick Donnelly

#2 Updated by Patrick Donnelly 5 months ago

  • Status changed from Need Review to Pending Backport

#3 Updated by Patrick Donnelly 5 months ago

  • Copied to Backport #25041: luminous: mds: reduce debugging for missing inodes during subtree migration added

#4 Updated by Patrick Donnelly 5 months ago

  • Copied to Backport #25042: mimic: mds: reduce debugging for missing inodes during subtree migration added

#5 Updated by Nathan Cutler 4 months ago

  • Status changed from Pending Backport to Resolved

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