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Bug #40112
closedmon: rados/multimon tests fail with clock skew
Status:
Resolved
Priority:
Normal
Assignee:
-
Category:
-
Target version:
-
% Done:
0%
Source:
Tags:
Backport:
nautilus, mimic
Regression:
No
Severity:
3 - minor
Reviewed:
Affected Versions:
ceph-qa-suite:
Component(RADOS):
Pull request ID:
Crash signature (v1):
Crash signature (v2):
Description
See
http://pulpito.ceph.com/sage-2019-05-30_21:14:09-rados:multimon-master-distro-basic-smithi/or
http://pulpito.ceph.com/sage-2019-06-03_14:22:18-rados:multimon-master-distro-basic-smithi/
http://pulpito.ceph.com/sage-2019-06-03_14:24:56-rados:multimon-nautilus-distro-basic-smithi/
The second variant, where we don't see the SKEW failure, appears to be caused because the ceph setup command to set the crush tunables takes foreeever due to no quorum, but eventually the clocks correct themselves and then the job proceeds (probably NTP)?
The underlying problem appears to be that mons can't form quorum if there is too much skew, which prevents a meaningful test.
whenever mon.b is the rank 0 mon.
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