[CentOS-virt] [CentOS] VirtIO disk 'leakage' across guests?
Dennis Jacobfeuerborn
dennisml at conversis.de
Tue Jan 17 16:01:20 EST 2012
On 01/17/2012 06:46 PM, James B. Byrne wrote:
>
> On Mon, January 16, 2012 17:01, Dennis Jacobfeuerborn wrote:
>> On 01/16/2012 10:16 PM, James B. Byrne wrote:
>>
>> ...
>>> The xmldump for this guest instance contains this:
>> ...
>>
>> Please post the xmldumps of the original guest and cloned
>> guest right after
>> cloning and without any modifications.
>>
>> Regards,
>> Dennis
>
> Prototype dumpxml
>
> virsh # dumpxml vm-centos-6
> <domain type='kvm' id='34'>
...
> <source dev='/dev/vg_vhost01/lv_vm_base'/>
> </domain>
> virsh # dumpxml sshpipe.harte-lyne.ca
> <domain type='kvm' id='19'>
...
> <source
> dev='/dev/vg_vhost01/lv_vm_sshipe.harte-lyne.ca_00'/>
> </domain>
>
> The second guest, sshpipe, shows this for pvdisplay:
>
> [root at sshpipe ~]# pvdisplay
> Couldn't find device with uuid
> umrIn6-Np0c-NC4Z-MuUo-5TBj-IKRE-XBU0De.
> --- Physical volume ---
> PV Name /dev/vda2
> VG Name vg_vm_centos_6
> PV Size 7.32 GiB / not usable 3.00 MiB
> Allocatable yes (but full)
> PE Size 4.00 MiB
> Total PE 1874
> Free PE 0
> Allocated PE 1874
> PV UUID
> djM23m-6Yeb-BQ2x-gPh9-ORMt-dX2i-Ou9xBQ
>
> --- Physical volume ---
> PV Name unknown device
> VG Name vg_vm_centos_6
> PV Size 31.25 GiB / not usable 3.97 MiB
> Allocatable yes
> PE Size 4.00 MiB
> Total PE 7999
> Free PE 1855
> Allocated PE 6144
> PV UUID
> umrIn6-Np0c-NC4Z-MuUo-5TBj-IKRE-XBU0De
>
What does the first guest say for pvdisplay?
The key here is the PV UUID "umrIn6-Np0c...". Either this PV must exists
somewhere else on the host or in one of the guest or maybe the cloning
process has corrupted the LVM metadata.
Regards,
Dennis
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