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Feature #12276

open

Handle MDS rank shutdown during forward scrub

Added by John Spray almost 9 years ago. Updated about 5 years ago.

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

0%

Source:
other
Tags:
Backport:
Reviewed:
Affected Versions:
Component(FS):
MDS
Labels (FS):
multimds
Pull request ID:

Description

Forward scrub may be targeting e.g. the stray dirs belong to an MDS, that get torn down during MDS rank shutdown.

Ensure that forward scrub references to per-rank metadata are torn down cleanly.

Any ongoing scrubs should probably be paused during rank shutdown to allow the ranks receiving this rank's subtrees to take up the burden. Exact handling of this will depend on the approach to #12275: whether we already include scrub information in migrated metadata.

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