Bug 1109141

Summary:	[SNAPSHOT]: Fails to mount missed snapshot
Product:	[Red Hat Storage] Red Hat Gluster Storage	Reporter:	Avra Sengupta <asengupt>
Component:	snapshot	Assignee:	Avra Sengupta <asengupt>
Status:	CLOSED ERRATA	QA Contact:	Rahul Hinduja <rhinduja>
Severity:	urgent	Docs Contact:
Priority:	high
Version:	rhgs-3.0	CC:	asrivast, nsathyan, rhs-bugs, senaik, spandit, ssamanta, storage-qa-internal, vagarwal
Target Milestone:	---
Target Release:	RHGS 3.0.0
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:	SNAPSHOT
Fixed In Version:	glusterfs-3.6.0.18-1	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:
Clones:	1109142 (view as bug list)		Environment:
Last Closed:	2014-09-22 19:41:25 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:
Bug Depends On:
Bug Blocks:	1109142

Description Avra Sengupta 2014-06-13 10:24:40 UTC

Description of problem:
If a brick's snapshot is missed, and the brick comes up later, the missed snapshot is not recreated. The mount of the missed snap fails.



Version-Release number of selected component (if applicable):


How reproducible:


Steps to Reproduce:
1.
2.
3.

Actual results:


Expected results:


Additional info:

Comment 1 Rahul Hinduja 2014-06-13 11:10:21 UTC

This is a regression bug which is failing with the latest build.

Comment 3 Avra Sengupta 2014-06-16 07:01:11 UTC

Fix at https://code.engineering.redhat.com/gerrit/26969

Comment 5 Avra Sengupta 2014-06-17 07:29:53 UTC

Steps to reproduce:
1. Create a 1x3 replica volume
2. Kill a brick on one of the node.
3. Create a snapshot.
4. Bring the brick up using gluster vol start force

The missed snapshot should be created and mounted.
gluster snap status should show all the snap bricks up and running.
df -h should also display the snap brick mounted

Comment 6 senaik 2014-06-17 09:55:16 UTC

Version : glusterfs 3.6.0.18 built on Jun 16 2014
=======

Repeated steps as mentioned in Comment 5 , the missed snapshot is created and mounted, df -h lists it and gluster snapshot status shows all snap bricks are up and running. 


df -h |grep /var/run/gluster/snaps/d9060b93807741e98f1676d1839e08af
                      100G   33M  100G   1% /var/run/gluster/snaps/d9060b93807741e98f1676d1839e08af/brick1


gluster snapshot list
snap1
snap_1


gluster snapshot status snap_1

Snap Name : snap_1
Snap UUID : c6a53a2b-ed16-46f4-9972-c6d0104fea3d

	Brick Path        :   snapshot13.lab.eng.blr.redhat.com:/var/run/gluster/snaps/d9060b93807741e98f1676d1839e08af/brick1/b7
	Volume Group      :   VolGroup1
	Brick Running     :   Yes
	Brick PID         :   18837
	Data Percentage   :   0.07
	LV Size           :   100.00g


	Brick Path        :   snapshot14.lab.eng.blr.redhat.com:/var/run/gluster/snaps/d9060b93807741e98f1676d1839e08af/brick2/b7
	Volume Group      :   VolGroup1
	Brick Running     :   Yes
	Brick PID         :   6435
	Data Percentage   :   0.07
	LV Size           :   100.00g


	Brick Path        :   snapshot15.lab.eng.blr.redhat.com:/var/run/gluster/snaps/d9060b93807741e98f1676d1839e08af/brick3/b7
	Volume Group      :   VolGroup1
	Brick Running     :   Yes
	Brick PID         :   25451
	Data Percentage   :   0.07
	LV Size           :   100.00g

Comment 8 errata-xmlrpc 2014-09-22 19:41:25 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.

http://rhn.redhat.com/errata/RHEA-2014-1278.html