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Bug #2192
closedceph-mon hangs consuming 100% CPU
Status:
Won't Fix
Priority:
High
Assignee:
-
Category:
Monitor
Target version:
-
% Done:
0%
Source:
Community (user)
Tags:
Backport:
Regression:
Severity:
Reviewed:
Affected Versions:
ceph-qa-suite:
Pull request ID:
Crash signature (v1):
Crash signature (v2):
Description
I have a test setup of two nodes each running 0.43 mds, mon and osd. I mount ceph kernel filesystem at /srv/ceph on both nodes and run this simple script on node A:while true; do dd if=/dev/sda of=/srv/ceph/data count=500000; done
After a couple of iterations all operations involving this filesystem (including umount -f -l) begin to hang in state D+, ceph health hangs in state Sl+, rados df gives connection timeout. This happens on both nodes.
Also on node A (where script was run) ceph-mon process starts to consube 100% CPU, and remains zombie (<defunct>) with 100% CPU after being killed.
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