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Bug 626334

Summary:	[vdsm] [libvirt] vdsm should produce an error in case libvirt fails to eject\change 'cd'
Product:	Red Hat Enterprise Linux 6	Reporter:	Haim <hateya>
Component:	vdsm	Assignee:	Dan Kenigsberg <danken>
Status:	CLOSED CURRENTRELEASE	QA Contact:	Haim <hateya>
Severity:	medium	Docs Contact:
Priority:	high
Version:	6.1	CC:	cpelland, hateya, iheim, mgoldboi, Rhev-m-bugs, yeylon, ykaul
Target Milestone:	rc
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	vdsm-4.9-15.el6	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2011-08-19 15:07:05 UTC	Type:	---
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:	626305
Bug Blocks:	632984

Description Haim 2010-08-23 08:33:32 UTC

Description of problem:

we just found a bug (behaviour - described in 626324) in libvirt which do not use force eject, that results a regression from our side, as in case image was mounted on guest machine, it will fail in the change\eject operation, and would produce an exception in GUI. 

This bug should be solved on all layers, meaning, libvirt should expose a way in their API to ask for force eject, which is an RFE, thus, vdsm should produce valid error message to GUI in case it fails. 

I assume backend has work here as well, though lets start with vdsm 

repro steps: see BZ 626324.

Comment 1 Haim 2010-08-23 08:34:59 UTC

2.6.32-63.el6.x86_64
libvirt-0.8.1-25.el6.x86_64
vdsm-4.9-13.el6.x86_64
device-mapper-multipath-0.4.9-25.el6.x86_64
lvm2-2.02.72-7.el6.x86_64
qemu-kvm-0.12.1.2-2.109.el6.x86_6

Comment 3 Haim 2010-09-27 11:44:58 UTC

Dan, it looks like behavior is now correct from vdsm perspective; however, I don't get any message from backend\frontend. 
do you think we should open a different bug for it ? 


Thread-3763::DEBUG::2010-09-27 14:10:29,985::clientIF::39::vds::(wrapper) [10.35.70.2]::call changeCD with ('75741acb-ad1c-4082-b80e-1aea87dbbcb4', '/rhev/data-center/6d511a8e-4cc5-49bc-b39d-28ceac510996/d7b8cd6e-
7e11-425b-b03f-83f5e721ea87/images/11111111-1111-1111-1111-111111111111/Fedora-10-x86_64-DVD.iso') {}
Dummy-147::DEBUG::2010-09-27 14:10:30,137::misc::123::Storage.Misc.excCmd::(execCmd) SUCCESS: <err> = '8000+0 records in\n8000+0 records out\n4096000 bytes (4.1 MB) copied, 4.99035 s, 821 kB/s\n'; <rc> = 0
Thread-3763::DEBUG::2010-09-27 14:10:30,777::clientIF::44::vds::(wrapper) return changeCD with {'status': {'message': 'Failed to change disk image', 'code': 41}}

Comment 4 Dan Kenigsberg 2010-09-27 12:04:43 UTC

No need - that's what bug 632984 is for.

Comment 5 Haim 2010-10-25 13:33:03 UTC

verified on vdsm 4.9-20 (there is still an issue with rhevm).
vdsm reports the following error:

Thread-4375::DEBUG::2010-10-25 15:46:12,346::clientIF::45::vds::(wrapper) return changeCD with {'status': {'message': 'Failed to change disk image', 'code': 41
}}


repro steps:

1) run guest in run level 5 
2) change CD and mount any iso 
3) try to change CD