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Feature #10792

qa: enable thrasher for MDS cluster size (vary max_mds)

Added by John Spray over 2 years ago. Updated about 1 month ago.

Status:
New
Priority:
Normal
Assignee:
-
Category:
multi-MDS
Target version:
-
Start date:
02/07/2015
Due date:
% Done:

0%

Source:
other
Tags:
Backport:
Reviewed:
User Impact:
Affected Versions:
Release:
Component(FS):
qa-suite
Needs Doc:
No

Description

Rather than just killing MDSs within a fixed size cluster, have a thrasher that varies max_mds and deactivates MDSs to control the size of the cluster. This will exercise the stopping/creating states while under load.


Related issues

Related to Bug #18579: Fuse client has "opening" session to nonexistent MDS rank after MDS cluster shrink Resolved 01/18/2017
Related to Feature #19230: Limit MDS deactivation to one at a time New 03/08/2017

History

#1 Updated by John Spray over 2 years ago

NB while adding cluster size tests, also check the mon commands e.g. #10862 (don't allow deactivate rank 0)

#2 Updated by Greg Farnum 12 months ago

  • Subject changed from Add thrasher for MDS cluster size (vary max_mds) to qa: Add thrasher for MDS cluster size (vary max_mds)
  • Category changed from Testing to multi-FS

#3 Updated by Greg Farnum 11 months ago

  • Category changed from multi-FS to multi-MDS
  • Component(FS) qa-suite added

#4 Updated by Patrick Donnelly 10 months ago

  • Assignee set to Patrick Donnelly

#5 Updated by Patrick Donnelly 7 months ago

  • Status changed from New to In Progress
  • Needs Doc set to No

Pre-requisite PR: https://github.com/ceph/ceph-qa-suite/pull/1175

multimds testing with the thrasher will be added in another PR.

#6 Updated by John Spray 4 months ago

  • Related to Bug #18579: Fuse client has "opening" session to nonexistent MDS rank after MDS cluster shrink added

#7 Updated by Patrick Donnelly 4 months ago

  • Status changed from In Progress to Need Review

#8 Updated by Patrick Donnelly 3 months ago

  • Related to Feature #19230: Limit MDS deactivation to one at a time added

#9 Updated by John Spray about 1 month ago

  • Subject changed from qa: Add thrasher for MDS cluster size (vary max_mds) to qa: enable thrasher for MDS cluster size (vary max_mds)
  • Status changed from Need Review to New
  • Assignee deleted (Patrick Donnelly)

The thrasher exists, this ticket is now for switching it on and getting the resulting runs green.

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