[libvirt-users] Efficient live disk backup with active blockcommit : Failed 'block-commit': Could not reopen file: Permission denied

[Keyur Bhalerao]

Hi

Was trying to get specific qemu-kvm version. Do you know any way to get the
2.1.2 installed. Was trying sudo apt-get install qemu-kvm=1.2.1 but its not
working.

Tried with sudo apt-get install qemu-kvm tree=1.2.1

But both have failed for Version not found.

Thanks
Keyur


On Tue, Dec 8, 2015 at 11:21 AM, Keyur Bhalerao <keyurbhalerao at gmail.com>
wrote:

> Thanks Kashyap for replying.
>
> QEMU has permissions to the directory which is having images. I will look
> into the AppArmor issue and find out more about this.
> Also as per suggestion from the link i have uncommented the user and group
> from the qemu.conf file - https://github.com/jedi4ever/veewee/issues/996
>
> By checking more on the AppArmor and sVirt issue  , i have modified the
> qemu.conf for security_driver="none". The result for this is no permission
> error but another error which can be related to QEMU 2.3.0
>
> virsh # blockcommit vm-01 vda --verbose --pivot --active
> Block Commit: [100 %]error: failed to pivot job for disk vda
> error: internal error: unable to execute QEMU command
> 'block-job-complete': The active block job for device 'drive-virtio-disk0'
> cannot be completed
>
> Searched more for this type of error and found -
>
> https://bugs.launchpad.net/qemu/+bug/1455475
>
> Looks like bug in QEMU 2.3.0 . Checking now with QEMU 2.1 for the same.
>
> Let me know if anything to more look for.
>
>
>
>
> Thanks,
> Keyur Bhalerao
>
>
> On Tue, Dec 8, 2015 at 5:18 AM, Kashyap Chamarthy <kchamart at redhat.com>
> wrote:
>
>> On Mon, Dec 07, 2015 at 12:52:34PM -0800, Keyur Bhalerao wrote:
>>
>> [. . .]
>>
>>  ubuntu at keyurubuntu:~$ virsh blockcommit vm-01 vda --active --verbose
>> --pivot
>> > error: internal error: unable to execute QEMU command 'block-commit':
>> Could
>> > not reopen file: Permission denied
>>
>> Fairly obvious suggestions, ensure permissions are set so that QEMU has
>> permissions to the dir that contains images.
>>
>> Or it could be an AppArmor issue.
>>
>> Also, check your logs:
>>
>>     /var/log/libvirt/qemu/$VM.log
>>     /var/log/libvirt/libvirtd.log  (assuming you have debug logging
>>     enabled)
>>
>> > I am not sure why this is getting as permission denied. I have tried
>> > couple of times reinstalling and creating new VMs . Every time when i
>> > have tried to block-commit getting landed into  same error.
>> >
>> > Is there any troubleshooting or solution to this issue. Stuck on this
>> > issue for last 2 days.  Quick help much appreciated.
>> >
>> > Thanks, Keyur Bhalerao
>> >
>> > Reference used -
>> > http://wiki.libvirt.org/page/Live-disk-backup-with-active-blockcommit
>> > -
>> > http://kashyapc.com/2012/09/14/externaland-live-snapshots-with-libvirt/
>>
>> --
>> /kashyap
>>
>
>
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