Bug 1394007

Summary:	filestore: can get stuck in an unbounded loop during scrub
Product:	[Red Hat Storage] Red Hat Ceph Storage	Reporter:	Ken Dreyer (Red Hat) <kdreyer>
Component:	RADOS	Assignee:	Samuel Just <sjust>
Status:	CLOSED ERRATA	QA Contact:	ceph-qe-bugs <ceph-qe-bugs>
Severity:	high	Docs Contact:
Priority:	high
Version:	2.0	CC:	ceph-eng-bugs, dn-infra-peta-pers, dzafman, kchai, shmohan, sjust, tserlin, vakulkar, vumrao
Target Milestone:	rc
Target Release:	2.1
Hardware:	x86_64
OS:	Linux
Whiteboard:
Fixed In Version:	RHEL: ceph-10.2.3-14.el7cp Ubuntu: ceph_10.2.3-15redhat1	Doc Type:	Bug Fix
Doc Text:	Due to a bug in the underlying source code, OSD nodes sometimes looped through the entire placement group, not only the requested segment, during the scrubbing process. Consequently, in some cases, the OSD nodes reached the 'suicide timeout' and terminated. This bug has been fixed, and OSD nodes no longer terminate due to the described problem.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2016-12-15 16:49:16 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Ken Dreyer (Red Hat) 2016-11-10 19:55:27 UTC

Description of problem:
Filestore collections with a certain layout can lead to slow scrubs or OSD suicides

Version-Release number of selected component (if applicable):
ceph v10.2.3

How reproducible:
unknown

Actual results:
slow scrubs or OSD suicides

Expected results:
scrubs finish in normal time, OSDs do not suicide

Comment 27 errata-xmlrpc 2016-12-15 16:49:16 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHSA-2016-2954.html