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Feature #16523

Assert directory fragmentation is occuring during stress tests

Added by John Spray 11 months ago. Updated 3 months ago.

Status:
In Progress
Priority:
Normal
Assignee:
Category:
Testing
Target version:
Start date:
06/27/2016
Due date:
% Done:

0%

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

Description

Currently we enable fragmentation and set a low (100) frag size limit, but nothing actually validates that there is any splitting going on, especially during thrashing runs where we care the most.

We have performance counters on the MDS that will tell us if splitting has occurred, but they will reset when MDSs restart.

We could add something to the thrasher task that captures MDS counters before shutting down, and accumulates values. We don't necessarily need this on every task, just something in there to check that splitting is really happening during at least some stress testing.

History

#1 Updated by John Spray 5 months ago

  • Assignee set to John Spray

#2 Updated by John Spray 3 months ago

  • Status changed from New to In Progress

#3 Updated by John Spray 3 months ago

  • Target version set to v12.0.0

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