Bug 1241433

Summary: Engine: Live merge fails after a disk containing a snapshot has been extended
Product: Red Hat Enterprise Virtualization Manager Reporter: rhev-integ
Component: ovirt-engineAssignee: Greg Padgett <gpadgett>
Status: CLOSED ERRATA QA Contact: Aharon Canan <acanan>
Severity: urgent Docs Contact:
Priority: urgent    
Version: 3.5.1CC: acanan, alitke, amureini, bazulay, bcholler, ecohen, gklein, gwatson, lbopf, lpeer, lsurette, mkalinin, ratamir, rbalakri, Rhev-m-bugs, tnisan, yeylon, ylavi
Target Milestone: ovirt-3.5.5Keywords: ZStream
Target Release: 3.5.5Flags: ylavi: Triaged+
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: storage
Fixed In Version: ovirt-engine-3.5.5-1 Doc Type: Bug Fix
Doc Text:
Live merge now automatically extends the base volume for instances in which a raw, preallocated disk's snapshots have been extended beyond their original disk capacity. This makes it possible for the contents of a snapshot to be merged into the base disk even when the snapshot's parent is the smaller base disk that was not extended beyond the original disk capacity.
Story Points: ---
Clone Of: 1236758 Environment:
Last Closed: 2015-10-26 18:32:46 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: Storage RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 1236758    
Bug Blocks:    

Comment 1 Allon Mureinik 2015-07-12 11:56:22 UTC
Copying doctext from 3.6.0 bug

Comment 2 Aharon Canan 2015-10-06 12:23:39 UTC
Verified using the following versions:
---------------------------------------
rhevm-3.5.5-0.1.el6ev.noarch - running on Rhel6.7
vdsm-4.16.27-1.el7ev.x86_64 - running on Rhel7.1

Scenario 1:
----------------
1. Create a VM with 1gb preallocated disk (probably thin as well, didn't test that) in a block-based domain.
2. Create a snapshot.
3. Extend the disk to 2gb.
4. Start the VM.
5. Delete the snapshot - Live merge works well!

Comment 4 errata-xmlrpc 2015-10-26 18:32:46 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-2015-1938.html