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Fix #10377

open

Impose lower bound on "mds events per segment"

Added by John Spray over 9 years ago. Updated almost 8 years ago.

Status:
New
Priority:
Normal
Assignee:
-
Category:
Performance/Resource Usage
Target version:
-
% Done:

0%

Source:
other
Tags:
Backport:
Reviewed:
Affected Versions:
ceph-qa-suite:
Component(FS):
MDS
Labels (FS):
Pull request ID:
Crash signature (v1):
Crash signature (v2):

Description

Currently, if the MDS is started with a small mds_events_per_segment, it can go into a trim/rejournal cycle when files are open (because we generate new segments from rejournalling at the same rate that we trim them).

Allowing for the subtreemap at the start of a segment, the lower bound should be 3 usually, or 5 if debug_subtreemap is enabled.

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 #1

Updated by John Spray over 9 years ago

  • Project changed from Ceph to CephFS
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 #2

Updated by Greg Farnum almost 8 years ago

  • Category set to Performance/Resource Usage
  • Component(FS) MDS added
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