Bug 1513543

Summary: [RFE] Add block job to create format on a storage device
Product: Red Hat Enterprise Linux 7 Reporter: Peter Krempa <pkrempa>
Component: qemu-kvm-rhevAssignee: Kevin Wolf <kwolf>
Status: CLOSED ERRATA QA Contact: Gu Nini <ngu>
Severity: high Docs Contact:
Priority: high    
Version: 7.5CC: aliang, areis, brault, chayang, coli, hreitz, jsuchane, juzhang, knoel, kwolf, michen, mtessun, ngu, pgrist, pingl, pkrempa, qzhang, rcyriac, virt-maint, xianwang
Target Milestone: rcKeywords: FutureFeature
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: qemu-kvm-rhev-2.12.0-6.el7 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2018-11-01 11:01:10 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: 760547, 1500889, 1500891, 1558125    

Description Peter Krempa 2017-11-15 15:27:11 UTC 
Description of problem:
To allow using blockdev-add for external snapshots (blockdev-snapshot) or blockdev mirror it's necessary to create qcow2 or other formats. Currently it would require a call to qemu-img which is not really a good idea for libvirt since it's hard to manage qemu-img or figure out whether it supports a given format (due to lacking introspection).

The formatting should be an asynchronous block job since it may take a long time if storage is blocked.
Comment 20 Miroslav Rezanina 2018-07-01 03:09:09 UTC 
Fix included in qemu-kvm-rhev-2.12.0-6.el7
Comment 29 Qunfang Zhang 2018-07-11 07:50:12 UTC 
Hello, Xianxian

Please help test this bug on Power.  Thanks!
Comment 30 xianwang 2018-07-13 04:37:23 UTC 
(In reply to Qunfang Zhang from comment #29)
> Hello, Xianxian
> 
> Please help test this bug on Power.  Thanks!

I have test these two cases of comment28, they work well on powerpc
Host:
3.10.0-915.el7.ppc64le
qemu-kvm-rhev-2.12.0-7.el7.ppc64le
SLOF-20171214-2.gitfa98132.el7.noarch

Guest:
3.10.0-919.el7.ppc64
Comment 31 errata-xmlrpc 2018-11-01 11:01:10 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://access.redhat.com/errata/RHBA-2018:3443