[ovirt-users] Disks Snapshot

Nir Soffer nsoffer at redhat.com
Mon Mar 14 13:14:22 UTC 2016


On Sat, Mar 12, 2016 at 3:10 PM, Marcelo Leandro <marceloltmm at gmail.com> wrote:
> Good morning
>
> I have a doubt, when i do a snapshot, a new lvm is generated, however
> when I delete this snapshot the lvm not off, that's right?

You question is not clear. Can you explain what is the unexpected behavior?

To check if an lv created or removed by ovirt, you can do:

pvscan --cache
lvs vg-uuid

Nir

>
> [root at srv-qemu03 93633835-d709-4ebb-9317-903e62064c43]# ls
> 27a8bca3-f984-4f67-9dd2-9e2fc5a5f366  7d9b6ed0-1125-4215-ab76-37bcda3f6c2d
> 3fba372c-4c39-4843-be9e-b358b196331d  b47f58e0-d576-49be-b8aa-f30581a0373a
> 5097df27-c676-4ee7-af89-ecdaed2c77be  c598bb22-a386-4908-bfa1-7c44bd764c96
> 5aaf9ce9-d7ad-4607-aab9-2e239ebaed51
> [root at srv-qemu03 93633835-d709-4ebb-9317-903e62064c43]# ls -l
> total 0
> lrwxrwxrwx. 1 vdsm kvm 78 Mar 12 09:28
> 27a8bca3-f984-4f67-9dd2-9e2fc5a5f366 ->
> /dev/c2dc0101-748e-4a7b-9913-47993eaa52bd/27a8bca3-f984-4f67-9dd2-9e2fc5a5f366
> lrwxrwxrwx. 1 vdsm kvm 78 Mar 12 09:31
> 3fba372c-4c39-4843-be9e-b358b196331d ->
> /dev/c2dc0101-748e-4a7b-9913-47993eaa52bd/3fba372c-4c39-4843-be9e-b358b196331d
> lrwxrwxrwx. 1 vdsm kvm 78 Mar 12 08:44
> 5097df27-c676-4ee7-af89-ecdaed2c77be ->
> /dev/c2dc0101-748e-4a7b-9913-47993eaa52bd/5097df27-c676-4ee7-af89-ecdaed2c77be
> lrwxrwxrwx. 1 vdsm kvm 78 Mar 12 09:23
> 5aaf9ce9-d7ad-4607-aab9-2e239ebaed51 ->
> /dev/c2dc0101-748e-4a7b-9913-47993eaa52bd/5aaf9ce9-d7ad-4607-aab9-2e239ebaed51
> lrwxrwxrwx. 1 vdsm kvm 78 Mar 12 09:12
> 7d9b6ed0-1125-4215-ab76-37bcda3f6c2d ->
> /dev/c2dc0101-748e-4a7b-9913-47993eaa52bd/7d9b6ed0-1125-4215-ab76-37bcda3f6c2d
> lrwxrwxrwx. 1 vdsm kvm 78 Nov 27 22:30
> b47f58e0-d576-49be-b8aa-f30581a0373a ->
> /dev/c2dc0101-748e-4a7b-9913-47993eaa52bd/b47f58e0-d576-49be-b8aa-f30581a0373a
> lrwxrwxrwx. 1 vdsm kvm 78 Mar 11 22:01
> c598bb22-a386-4908-bfa1-7c44bd764c96 ->
> /dev/c2dc0101-748e-4a7b-9913-47993eaa52bd/c598bb22-a386-4908-bfa1-7c44bd764c96
>
>
>
> disks snapshot:
> [root at srv-qemu03 93633835-d709-4ebb-9317-903e62064c43]# qemu-img info
> 27a8bca3-f984-4f67-9dd2-9e2fc5a5f366
> image: 27a8bca3-f984-4f67-9dd2-9e2fc5a5f366
> file format: qcow2
> virtual size: 112G (120259084288 bytes)
> disk size: 0
> cluster_size: 65536
> backing file: ../93633835-d709-4ebb-9317-903e62064c43/b47f58e0-d576-49be-b8aa-f30581a0373a
> backing file format: raw
> Format specific information:
>     compat: 0.10
>     refcount bits: 16
>
>
> [root at srv-qemu03 93633835-d709-4ebb-9317-903e62064c43]# qemu-img info
> 3fba372c-4c39-4843-be9e-b358b196331d
> image: 3fba372c-4c39-4843-be9e-b358b196331d
> file format: qcow2
> virtual size: 112G (120259084288 bytes)
> disk size: 0
> cluster_size: 65536
> backing file: ../93633835-d709-4ebb-9317-903e62064c43/b47f58e0-d576-49be-b8aa-f30581a0373a
> backing file format: raw
> Format specific information:
>     compat: 0.10
>     refcount bits: 16
>
> [root at srv-qemu03 93633835-d709-4ebb-9317-903e62064c43]# qemu-img info
> 5aaf9ce9-d7ad-4607-aab9-2e239ebaed51
> image: 5aaf9ce9-d7ad-4607-aab9-2e239ebaed51
> file format: qcow2
> virtual size: 112G (120259084288 bytes)
> disk size: 0
> cluster_size: 65536
> backing file: ../93633835-d709-4ebb-9317-903e62064c43/b47f58e0-d576-49be-b8aa-f30581a0373a
> backing file format: raw
> Format specific information:
>     compat: 0.10
>     refcount bits: 16
>
>
> disk base:
> [root at srv-qemu03 93633835-d709-4ebb-9317-903e62064c43]# qemu-img info
> b47f58e0-d576-49be-b8aa-f30581a0373a
> image: b47f58e0-d576-49be-b8aa-f30581a0373a
> file format: raw
> virtual size: 112G (120259084288 bytes)
> disk size: 0
>
>
> Thanks.
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