[ovirt-users] Disks Snapshot

Marcelo Leandro marceloltmm at gmail.com
Mon Mar 14 11:05:30 EDT 2016 

*Is it cold (the VM is down) or live (the VM is up) merge (snapshot
deletion)?*

VM is up

*What version are you running?*

oVirt Engine Version: 3.6.3.4-1.el7.centos


*Can you please share engine and vdsm logs?*

yes.




*Please note that at some point we try to verify that image was removed by
running getVolumeInfo hence, the volume not found is expected. The thing
is, that you say that volume does exist.Can you run following command on
the host:vdsClient -s 0 getVolumeInfo <sd> <sp> <img> <vol>*

return the command:
[root at srv-qemu03 93633835-d709-4ebb-9317-903e62064c43]# vdsClient -s 0
getVolumeInfo  c2dc0101-748e-4a7b-9913-47993eaa52bd
77e24b20-9d21-4952-a089-3c5c592b4e6d 93633835-d709-4ebb-9317-903e62064c43
948d0453-1992-4a3c-81db-21248853a88a
Volume does not exist: ('948d0453-1992-4a3c-81db-21248853a88a',)

after restarting the host where vm was on, the link discs in image_group_id
was broken but was not removed.

lrwxrwxrwx. 1 vdsm kvm 78 Mar 12 10:04 215a902a-1b99-403b-a648-21977dd0fa78
->
/dev/c2dc0101-748e-4a7b-9913-47993eaa52bd/215a902a-1b99-403b-a648-21977dd0fa78
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 Mar 12 10:13 948d0453-1992-4a3c-81db-21248853a88a
->
/dev/c2dc0101-748e-4a7b-9913-47993eaa52bd/948d0453-1992-4a3c-81db-21248853a88a
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


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

the link to the lvm should not be deleted after deleting the snapshot?


Thanks

2016-03-14 10:14 GMT-03:00 Nir Soffer <nsoffer at redhat.com>:

> 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.
> > _______________________________________________
> > Users mailing list
> > Users at ovirt.org
> > http://lists.ovirt.org/mailman/listinfo/users
>
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