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Bug #21005

mon: mon_osd_down_out interval can prompt osdmap creation when nothing is happening

Added by Greg Farnum about 2 years ago.

Status:
New
Priority:
Normal
Assignee:
-
Category:
Introspection/Control
Target version:
-
Start date:
08/15/2017
Due date:
% Done:

0%

Source:
Tags:
Backport:
Regression:
No
Severity:
1 - critical
Reviewed:
Affected Versions:
ceph-qa-suite:
Component(RADOS):
Monitor
Pull request ID:

Description

I saw a cluster where we had the whole gamut of no* flags set in an attempt to stop it creating maps.

Unfortunately, the OSDs were turned off for a while and one way or another it got into the tick() block where it marks OSDs out. Now, it didn't mark any OSDs out because the noout flag was set — but it still set do_propose = true and generated a new osdmap. Injecting mon_osd_down_out = 0 stopped the map generation.

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