Bug 737851

Summary:	Disconnecting cdrom image fail
Product:	Red Hat Enterprise Linux 5	Reporter:	Miroslav Rezanina <mrezanin>
Component:	xen	Assignee:	Miroslav Rezanina <mrezanin>
Status:	CLOSED ERRATA	QA Contact:	Virtualization Bugs <virt-bugs>
Severity:	high	Docs Contact:
Priority:	low
Version:	5.8	CC:	gcosta, hjiang, juzhang, leiwang, llim, mkenneth, mshao, pbonzini, qguan, quintela, qwan, rhod, rwu, virt-maint, xen-maint, xfu, ydu
Target Milestone:	rc	Keywords:	Regression
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	xen-3.0.3-135.el5	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:	645266	Environment:
Last Closed:	2012-02-21 05:56:05 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:
Bug Blocks:	699611

Comment 1 Miroslav Rezanina 2011-09-13 09:19:58 UTC

Patch for bz #645237 introduce check for image existence. However, libvirt pass empty string to disconect image from guest that cause error so disconnecting is not possible.

Comment 6 Miroslav Rezanina 2011-10-26 14:06:55 UTC

Fix built into xen-3.0.3-135.el5

Comment 8 Qixiang Wan 2011-12-15 12:25:41 UTC

Verified with xen-3.0.3-135.el5.

With the xen <= -134, there is error message prompt when try to disconnect the cdrom device in virt-manager:
Error Removing CDROM: Requeseted operation is not valid:
Xm driver only supports modifying persistent config.

And xend raise the error as following:
  ...
  File "/usr/lib64/python2.4/site-packages/xen/xend/XendDomainInfo.py", line 1573, in reconfigureDevice
    return self.getDeviceController(deviceClass).reconfigureDevice(
  File "/usr/lib64/python2.4/site-packages/xen/xend/server/blkif.py", line 130, in reconfigureDevice
    raise VmError("Can't read disk file %s" % new_back['params'])
VmError: Can't read disk file 

After update to xen-3.0.3-135.el5, there is no issue with disconnecting cdrom device.

Comment 9 errata-xmlrpc 2012-02-21 05:56:05 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/RHBA-2012-0160.html