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Bug #40002

mds: not trim log under heavy load

Added by Yunzhi Cheng 3 months ago. Updated 3 months ago.

Status:
New
Priority:
Normal
Assignee:
-
Category:
-
Target version:
Start date:
Due date:
% Done:

0%

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

Description

ceph version 14.2.1

we have 3 mds under a heavy load (create 8k files per second)

we find mds log add very fast almost 8k/s

At first mds log trim normally, after 10 minutes, the mds log stop trim and metadata pool grow very fast. Finally cause metadata pool full.

屏幕快照 2019-05-22 下午11.53.10.png View (114 KB) Yunzhi Cheng, 05/22/2019 03:54 PM

History

#1 Updated by Zheng Yan 3 months ago

multiple-active mds?

#2 Updated by Yunzhi Cheng 3 months ago

Zheng Yan wrote:

multiple-active mds?

yes

#3 Updated by Patrick Donnelly 3 months ago

  • Subject changed from mds not trim log under heavy load to mds: not trim log under heavy load
  • Target version changed from v14.2.1 to v15.0.0
  • Start date deleted (05/22/2019)
  • Source set to Community (user)
  • Backport set to nautilus,mimic

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