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@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@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@storage1 8d815282-6957-41c0-bb3e-6c8f4a23a64b]# ll

total 13096987560

-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

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