[ovirt-users] Snapshot or not?

[Demeter Tibor]

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 
-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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