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Bug 712050

Summary:

Hotplug disk fail with error: drive hotplug is not supported

Product:

Red Hat Enterprise Linux 6

Reporter:

weizhang <weizhan>

Component:

libvirt

Assignee:

Jiri Denemark <jdenemar>

Status:

CLOSED ERRATA

QA Contact:

Virtualization Bugs <virt-bugs>

Severity:

high

Docs Contact:

Priority:

high

Version:

6.2

CC:

dallan, dyuan, gren, jdenemar, jyang, llim, mzhan, rwu, veillard, yoyzhang, yupzhang

Target Milestone:

Keywords:

Regression

Target Release:

---

Hardware:

x86_64

OS:

Linux

Whiteboard:

Fixed In Version:

libvirt-0.9.3-1.el6

Doc Type:

Bug Fix

Doc Text:

Story Points:

---

Clone Of:

Environment:

Last Closed:

2011-12-06 11:15:10 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:

Attachments:

Description	Flags
libvirtd debug log	none

Description weizhang 2011-06-09 11:28:42 UTC

Description of problem:
When hotplug a disk , it will report an error
# virsh attach-disk vr-rhel6-x86_64-kvm /var/lib/libvirt/images/foo.img vda
error: Failed to attach disk
error: operation failed: drive hotplug is not supported

Version-Release number of selected component (if applicable):
kernel-2.6.32-156.el6.x86_64
libvirt-0.9.1-1.el6.x86_64
qemu-kvm-0.12.1.2-2.164.el6.x86_64

How reproducible:
100%

Steps to Reproduce:
1. install a guest vr-rhel6-x86_64-kvm 
2. create a image with 
# qemu-img create /var/lib/libvirt/images/foo.img 10M
3. hotplug a disk to guest
# virsh attach-disk vr-rhel6-x86_64-kvm /var/lib/libvirt/images/foo.img vda
  
Actual results:
report error:
error: Failed to attach disk
error: operation failed: drive hotplug is not supported

Expected results:
hotplug success with no error

Additional info:

Comment 2 Jiri Denemark 2011-06-09 12:02:14 UTC

Hmm, it seems drive hotplug went all the way down to HMP passthrough although it should have been handled by __com.redhat_drive_add QMP command. Could you attach libvirtd debug logs of this operation?

Comment 3 weizhang 2011-06-10 02:24:39 UTC

Created attachment 504006 [details]
libvirtd debug log

Comment 4 weizhang 2011-06-13 01:50:06 UTC

on libvirt-0.8.7-18.el6.x86_64 , hotplug succeed with no error, so set to regression

Comment 5 Jiri Denemark 2011-06-13 11:45:31 UTC

Thanks, so __com.redhat_drive_add command was used and succeeded. This a bug in forwardporting libvirt-Support-virtio-disk-hotplug-in-JSON-mode.patch from 6.1.

Comment 6 Jiri Denemark 2011-06-13 12:06:27 UTC

A fixed version of the patch sent to rhvirt-patches: http://post-office.corp.redhat.com/archives/rhvirt-patches/2011-June/msg00145.html

Comment 7 Daniel Veillard 2011-06-23 03:41:36 UTC

I apparently missed the patch when building libvirt-0.9.2-1.el6, should be in
next build though !

Daniel

Comment 9 yuping zhang 2011-07-06 07:28:20 UTC

Reproduced this issue on libvirt-0.9.2-1.el6.x86_64
# virsh attach-disk rhel6 /var/lib/libvirt/images/foo.img vda
error: Failed to attach disk
error: operation failed: drive hotplug is not supported

Tested this issue with:

libvirt-0.9.3-1.el6
qemu-kvm-0.12.1.2-2.167.el6
kernel-2.6.32-164.el6

# virsh attach-disk rhel6 /var/lib/libvirt/images/foo.img vda
Disk attached successfully

#virsh dumpxml rhel6
     .........
    <disk type='block' device='disk'>
      <driver name='qemu' type='raw'/>
      <source dev='/var/lib/libvirt/images/foo.img'/>
      <target dev='vda' bus='virtio'/>
      <alias name='virtio-disk0'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/>
    </disk>
   ...............

So change the status to VERIFIED

Comment 10 errata-xmlrpc 2011-12-06 11:15:10 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.

http://rhn.redhat.com/errata/RHBA-2011-1513.html