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Bug 1071973

Summary:	empty-pre-post algorithm is unable to remove empty snapshots
Product:	Red Hat Enterprise Linux 7	Reporter:	Ondrej Kozina <okozina>
Component:	snapper	Assignee:	Ondrej Kozina <okozina>
snapper sub component:	general	QA Contact:	yanfu,wang <yanwang>
Status:	CLOSED ERRATA	Docs Contact:
Severity:	medium
Priority:	medium	CC:	agk, lmiksik, okozina, prajnoha, qcai, xhe
Version:	7.0	Keywords:	Triaged
Target Milestone:	rc
Target Release:	7.1
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	snapper-0.1.7-7.el7	Doc Type:	Known Issue
Doc Text:	The empty-pre-post cleanup algorithm, which is used for deleting pre-post pairs of file system snapshots with empty diffs, does not work in Red Hat Enterprise Linux 7. To work around this problem, remove empty pre-post snapshot couples manually by using the "delete" command.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2015-03-05 13:29:45 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 Ondrej Kozina 2014-03-03 15:25:16 UTC

Description of problem:
cleanup algorithm 

Version-Release number of selected component (if applicable):
snapper-0.1.7-6.el7.*

How reproducible:

have following lines in /etc/snapper/configs/<config_name> file:

# cleanup empty pre-post-pairs
EMPTY_PRE_POST_CLEANUP="yes"
# limits for empty pre-post-pair cleanup
EMPTY_PRE_POST_MIN_AGE="10" (or other low enough value in secs)


Steps to Reproduce:
1. create empty pre-post snapshot couples: snapper -c <config_name> create -c empty-pre-post --command "echo idling"
2. wait for $EMPTY_PRE_POST_MIN_AGE secs
3. snapper -c <config_name> cleanup empty-pre-post

Actual results:
[root@localhost ~]# snapper -c testsuite cleanup empty-pre-post
Config is in use.

Expected results:
Empty pre post snapshots are removed.

Comment 1 Ondrej Kozina 2014-03-05 14:55:24 UTC

upstream fix: https://github.com/openSUSE/snapper/pull/58

Comment 9 errata-xmlrpc 2015-03-05 13:29:45 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/RHBA-2015-0569.html