[Users] Online snapshot

[Itamar Heim]

On 06/28/2012 04:40 AM, Winfried de Heiden wrote:
> Hi all,
>
> It seems live snapshot is available in the Fedora 17 qemu-kvm. On my
> laptop with kvm, virt-manager, libvirt, virsh etc. I created a virtual
> machine and tried  to make a live snapshot:
>
> virsh -c qemu:///system
> Welcome to virsh, the virtualization interactive terminal.
>
> Type:  'help' for help with commands
>         'quit' to quit
>
> virsh # list
>   Id    Name                           State
> ----------------------------------------------------
>   1     RHEL55_NTP                     running
>
> virsh # snapshot-create RHEL55_NTP
> Domain snapshot 1340871802 created
> virsh # snapshot-list RHEL55_NTP
>   Name                 Creation Time             State
> ------------------------------------------------------------
>   1340871724           2012-06-28 10:22:04 +0200 running
>   1340871802           2012-06-28 10:23:22 +0200 running
>
> Both my laptop and the Virtio vdsm machine are using the same package:
>
> [root at kvm ~]# rpm -qf `which qemu-kvm`
> qemu-system-x86-1.0-17.fc17.x86_64
>
> [wdh at laptop-winfried ~]$ rpm -qf `which qemu-kvm`
> qemu-system-x86-1.0-17.fc17.x86_64

dave - who can help us elaborate on this libvirt error:
reuse is not supported with
this QEMU binary

Thanks,
    Itamar

>
>
>
>
>
> Op 28-06-12 03:29, Itamar Heim schreef:
>> On 06/27/2012 10:47 AM, Winfried de Heiden wrote:
>>> Hi all,
>>>
>>>
>>> Trying to create an online (vm still running) fails; attachted is de
>>> vdsm logfile trying to create a live snapshot.
>>>
>>> Some details:
>>>
>>> hypervisor = Fedora 17 + vdsm, all the latest updates etc.
>>>
>>> [root at kvm vdsm]# rpm -qi vdsm
>>> Name        : vdsm
>>> Version     : 4.10.0
>>> Release     : 2.fc17
>>> Architecture: x86_64
>>> Install Date: wo 27 jun 2012 12:08:20 CEST
>>> Group       : Applications/System
>>> Size        : 2425943
>>> License     : GPLv2+
>>> Signature   : (none)
>>> Source RPM  : vdsm-4.10.0-2.fc17.src.rpm
>>> Build Date  : vr 22 jun 2012 12:52:54 CEST
>>> Build Host  : x86-11.phx2.fedoraproject.org
>>> Relocations : (not relocatable)
>>> Packager    : Fedora Project
>>> Vendor      : Fedora Project
>>> URL         : http://www.ovirt.org/wiki/Vdsm
>>> Summary     : Virtual Desktop Server Manager
>>> Description :
>>> The VDSM service is required by a Virtualization Manager to manage the
>>> Linux hosts. VDSM manages and monitors the host's storage, memory and
>>> networks as well as virtual machine creation, other host administration
>>> tasks, statistics gathering, and log collection.
>>>
>>> BTL, sanlock is disabled in qemu.conf (#lock_manager="sanlock"), I
>>> cannot install a vm when it's enabled. Is that related?
>>
>> this is the relevant error coming from libvirt.
>> maybe fedora 17 qemu-kvm does not have live snapshot support?
>>
>> Thread-306::ERROR::2012-06-27
>> 12:46:40,178::libvirtvm::1782::vm.Vm::(snapshot)
>> vmId=`ef978066-09c8-40aa-8e0b-4accfacc15bd`::Unable to take snapshot
>> Traceback (most recent call last):
>>    File "/usr/share/vdsm/libvirtvm.py", line 1780, in snapshot
>>      libvirt.VIR_DOMAIN_SNAPSHOT_CREATE_REUSE_EXT))
>>    File "/usr/share/vdsm/libvirtvm.py", line 491, in f
>>      ret = attr(*args, **kwargs)
>>    File "/usr/lib/python2.7/site-packages/vdsm/libvirtconnection.py",
>> line 82, in wrapper
>>      ret = f(*args, **kwargs)
>>    File "/usr/lib64/python2.7/site-packages/libvirt.py", line 1443, in
>> snapshotCreateXML
>>      if ret is None:raise libvirtError('virDomainSnapshotCreateXML()
>> failed', dom=self)
>> libvirtError: unsupported configuration: reuse is not supported with
>> this QEMU binary
>
>
> _______________________________________________
> Users mailing list
> Users at ovirt.org
> http://lists.ovirt.org/mailman/listinfo/users