Bug 557133

Summary:	RFE: No 'drive_del' command available for removing VirtIO disks, or SCSI controllers
Product:	Red Hat Enterprise Linux 6	Reporter:	Daniel Berrangé <berrange>
Component:	qemu-kvm	Assignee:	Markus Armbruster <armbru>
Status:	CLOSED DUPLICATE	QA Contact:	Virtualization Bugs <virt-bugs>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	6.1	CC:	armbru, jyang, lcapitulino, lihuang, syeghiay, tburke, virt-maint, xtian
Target Milestone:	beta	Keywords:	FutureFeature
Target Release:	6.1
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Enhancement
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2011-01-27 15:44:24 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:	559201, 580951

Description Daniel Berrangé 2010-01-20 14:29:28 UTC

Description of problem:
For VirtIO disks, or SCSI controllers, libvirt can use  device_del or pci_del to remove the device / controller respectively. There is no way, however, to remove a single SCSI disk from a SCSI controller. Previously libvirt's SCSI remove was broken, actually removing the entire controller and we'd like to now fix that to properly remove the single drive.

I'd like to see a monitor command that supports 

  drive_del  if=scsi,$bus.$unit

And/or

  drive_del  $id


Version-Release number of selected component (if applicable):
qemu-kvm-0.12.1.2-2.9.el6.x86_64

How reproducible:
Always

Steps to Reproduce:
1.
2.
3.
  
Actual results:


Expected results:


Additional info:

Comment 1 Daniel Berrangé 2010-01-20 14:30:20 UTC

There was a previous thread about this here, but it didn't resolve itself:

http://patchwork.ozlabs.org/patch/33933/

Comment 2 RHEL Program Management 2010-01-20 14:35:43 UTC

This request was evaluated by Red Hat Product Management for inclusion in a Red
Hat Enterprise Linux major release.  Product Management has requested further
review of this request by Red Hat Engineering, for potential inclusion in a Red
Hat Enterprise Linux Major release.  This request is not yet committed for
inclusion.

Comment 3 Daniel Berrangé 2010-03-01 14:49:23 UTC

Based on this new discovery that 'device_del' of the guest device, also removes the drive state, we don't have an urgent need for 'drive_del'.

http://www.redhat.com/archives/libvir-list/2010-March/msg00036.html

So suggest this BZ can be pushed off to rhel-6.1

Comment 4 Gerd Hoffmann 2010-06-08 15:04:00 UTC

Markus, I think your -blockdev work supersedes this, right?
Wanna take this for your work?  Or should I CLOSE/WOUNTFIX or CLOSE/DUPLICATE?

Comment 5 Markus Armbruster 2010-06-08 16:49:17 UTC

Yes, it'll provide the feature.  Taking the bug.

Related: bug 581963.

Comment 11 Markus Armbruster 2011-01-27 15:44:24 UTC

Bug 654682 asks for the same feature, just for different reasons.  Since the actual work is being tracked there, close this one as duplicate.

*** This bug has been marked as a duplicate of bug 654682 ***