[ovirt-users] Snapshot or not?

Thu Nov 16 14:57:09 UTC 2017

Hi Tibor,

Can you please explain this part: "After this I just wondered, I will make
a new VM with same disk and I will copy the images (really just rename)
from original to recreated."
What were the exact steps you took?

Thanks

On Thu, Nov 16, 2017 at 4:19 PM, Demeter Tibor <tdemeter at itsmart.hu> wrote:

> Hi,
>
> Thank you for your reply.
>
> So. I have a disk with snapshot. Or - really - I just think that is a
> snapshot. It was attached originally to a VM (with other two disks, that is
> not have snapshot) I did a detach-attach-storage procedure, but after
> attach, - I don't know why -  ovirt could not import the VM and disks from
> this  (ovirt said it is not possible).  After this I just wondered, I will
> make a new VM with same disk and I will copy the images (really just
> rename) from original to recreated.
>
> It was partial success because the VM can boot, but the disk, where there
> is a snapshot I can't read the LVM table. I see just it seems to corrupt.
> Now this disk in a very interested state: I can see the snapshot datas
> from the vm as raw disk.
> I think Ovirt don't know that is a snapshotted image and attach to VM as
> raw disk.
>
> So my really question, how can I add this disk image as good to ovirt?
>
> Please help me, it is very important me.:(
>
> Thanks in advance,
>
> Have a nice day,
>
> Tibor
>
>
> ----- 2017. nov.. 16., 11:55, Ala Hino <ahino at redhat.com> írta:
>
> Hi Tibor,
> I am not sure I completely understand the scenario.
>
> You have a VM with two disks and then you create a snapshot including the
> two disks?
> Before creating the snapshot, did the VM recognize the two disks?
>
> On Mon, Nov 13, 2017 at 10:36 PM, Demeter Tibor <tdemeter at itsmart.hu>
> wrote:
>
>> Dear Users,
>>
>> I have a disk of a vm, that is have a snapshot. It is very interesting,
>> because there are two other disk of that VM, but there are no snapshots of
>> them.
>> I found this while I've try to migrate a storage-domain between two
>> datacenter.
>> Because, I didn't import that vm from the storage domain, I did an
>> another similar VM with exactly same sized thin-provisioned disks. I have
>> renamed, copied to here my originals.
>>
>> The VM started successfully, but the disk that contain a snapshot did not
>> recognized by the os. I can see the whole disk as raw. (disk id, format in
>> ovirt, filenames of images, etc) . I think ovirt don't know that is a
>> snapshotted image and use as raw. Is it possible?
>> I don't see any snapshot in snapshots. Also I have try to list snapshots
>> with qemu-img info and qemu-img snapshot -l , but it does not see any
>> snapshots in the image.
>>
>> Really, I don't know how is possible this.
>>
>> [root at storage1 8d815282-6957-41c0-bb3e-6c8f4a23a64b]# qemu-img info
>> 5974fd33-af4c-4e3b-aadb-bece6054eb6b
>> image: 5974fd33-af4c-4e3b-aadb-bece6054eb6b
>> file format: qcow2
>> virtual size: 13T (13958643712000 bytes)
>> disk size: 12T
>> cluster_size: 65536
>> backing file: ../8d815282-6957-41c0-bb3e-6c8f4a23a64b/723ad5aa-02f6-
>> 4067-ac75-0ce0a761627f
>> backing file format: raw
>> Format specific information:
>>     compat: 0.10
>>
>> [root at storage1 8d815282-6957-41c0-bb3e-6c8f4a23a64b]# qemu-img info
>> 723ad5aa-02f6-4067-ac75-0ce0a761627f
>> image: 723ad5aa-02f6-4067-ac75-0ce0a761627f
>> file format: raw
>> virtual size: 2.0T (2147483648000 bytes)
>> disk size: 244G
>>
>> [root at storage1 8d815282-6957-41c0-bb3e-6c8f4a23a64b]# ll
>> total 13096987560 <(309)%20698-7560>
>> -rw-rw----. 1 36 36 13149448896512 Nov 13 13:42 5974fd33-af4c-4e3b-aadb-
>> bece6054eb6b
>> -rw-rw----. 1 36 36        1048576 Nov 13 19:34 5974fd33-af4c-4e3b-aadb-
>> bece6054eb6b.lease
>> -rw-r--r--. 1 36 36            262 Nov 13 19:54 5974fd33-af4c-4e3b-aadb-
>> bece6054eb6b.meta
>> -rw-rw----. 1 36 36  2147483648000 Jul  8  2016 723ad5aa-02f6-4067-ac75-
>> 0ce0a761627f
>> -rw-rw----. 1 36 36        1048576 Jul  7  2016 723ad5aa-02f6-4067-ac75-
>> 0ce0a761627f.lease
>> -rw-r--r--. 1 36 36            335 Nov 13 19:52 723ad5aa-02f6-4067-ac75-
>> 0ce0a761627f.meta
>>
>> qemu-img snapshot -l 5974fd33-af4c-4e3b-aadb-bece6054eb6b
>>
>> (nothing)
>>
>> Because it is a very big (13 TB) disk I can't migrate to an another
>> image, because I don't have enough free space. So I just would like to use
>> it in ovirt like in the past.
>>
>> I have a very old ovirt (3.5)
>>
>> How can I use this disk?
>>
>> Thanks in advance,
>>
>> Regards,
>>
>> Tibor
>>
>>
>> _______________________________________________
>> Users mailing list
>> Users at ovirt.org
>> http://lists.ovirt.org/mailman/listinfo/users
>>
>>
>
> _______________________________________________
> Users mailing list
> Users at ovirt.org
> http://lists.ovirt.org/mailman/listinfo/users
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.ovirt.org/pipermail/users/attachments/20171116/dbddd85f/attachment.html>