[ovirt-users] Any way to correlate a VM disk (e.g. /dev/vda) to the vdsm ovirt disk?

[Nir Soffer]

On Wed, Oct 7, 2015 at 7:58 PM, Jiří Sléžka <jiri.slezka at slu.cz> wrote:
> Hi,
>
> Dne 6.10.2015 v 22:07 ccox at endlessnow.com napsal(a):
>>
>> I want to correlate virtual disks back to their originating storage under
>> ovirt. Is there any way to do this?
>>
>> e.g. (made up example)
>>
>> /dev/vda
>>
>> maps to ovirt disk
>>
>> disk1_vm serial 978e00a3-b4c9-4962-bc4f-ffc9267acdd8
>
>
> In oVirt there are two storage types - filesystem based (NFS, posix,
> glusterfs - uses files for storing images) and block device based (FC, iSCSI
> - uses lvm)
>
> If I understand correctly, you would like know where exactly is stored a
> virtual disk. Right?
>
> All you know is on which storage domain is your virtual disk stored and disk
> uuid (imgUUID)), right?
>
> My approach is this (I am using block device based FC stroage so my virtual
> disks are stored as logical volumes). Probably there is much easier way ;-)
> please correct me
>
> ssh to any host
>
> list storage domains (sdUUID)
>
> vdsClient -s 0 getImageDomainsList
>
> find your domain uuid by name
>
> vdsClient -s 0 getStorageDomainInfo sdUUID
>
> you will get also pool (spUUID)
>
> now you can search for volume(s) the image consists of
>
> getVolumesList sdUUID spUUID imgUUID
>
> you will get volUUID (one or more)
>
> now you can check volume info
>
> getVolumeInfo sdUUID spUUID imgUUID volUUID
>
> and also you can get volume path
>
> getVolumePath sdUUID spUUID imgUUID volUUID

Note that getVolumePath was removed in 3.6. The only way to get this
info now is via prepareImage.

>
> you will get something like
>
> /rhev/data-center/mnt/blockSD/088e7ed9-84c7-4fbd-a570-f37fa986a772/images/be5c56de-6a22-4d1a-8579-f0f5d501d90c/0681822f-3ac8-473b-95ce-380f8ab4de06
>
> it is symlink which points to target block device
>
> it looks to me that on block devices the path is
>
> /dev/sdUUID/volUUID
>
>
> btw. I am using oVirt3.5...
>
>
> Cheers, Jiri
>
>
>
>>
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