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Bug #2395
closedkernel crash after unmap a rdb device while the cluster is down
Status:
Resolved
Priority:
High
Assignee:
-
Category:
libceph
Target version:
-
% Done:
0%
Source:
Development
Tags:
Backport:
Regression:
Severity:
Reviewed:
Affected Versions:
ceph-qa-suite:
Crash signature (v1):
Crash signature (v2):
Description
1) get a ceph cluster running
2) create a RBD and map it to an client
3) shutdown the cluster
4) as soon as the cluster is down: unmap the RBD on the cluster
-> kernel crash
- this happens with kernel v3.0 directly after the unmap call returns
- it also happens with the code from git branch remotes/origin/for-linus but the behavior is different
-> as soon as you call unmap on the rbd, the command will never come back
and you see libceph looping over the MONs for ever. As soon as you try
to stop/kill the rbd call , you will end up in a kernel crash - ceph version was v0.45 @ SLES11-SP2
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