Dear all,

We have deployed a new cloudstack platform based on 4.9 version. Our primary 
storage is based on glusterFS. Everything seemed ok (imported a centos7 
template from our old Cloudstack deployment and deployed VMs). 
However we are having trouble downloading templates (this implies migrating 
qcow images from primary to secondary storage). 

The error we get is: 

Nov  5 00:01:22 c11-2 sh: ERROR [kvm.storage.LibvirtStorageAdaptor] 
(agentRequest-Handler-5:) (logid:c1f9652d) Failed to convert 
/mnt/c69fb76e-f2f9-359e-bda0-1259786717af/b51aea8e-d60d-4bff-8e8d-3429a98df2ba 
to 
/mnt/38f76a26-3a3b-380f-aa69-38bcef0550a6/0e3a90fb-57b7-4c09-9ef9-5d5c90fb438f.qcow2
 the error was: qemu-img: block/raw-posix.c:1353: find_allocation: Assertion 
`offs >= start' failed.

It seems is due to qemu-img dealing with qcow images from the gluster volume. 

Any hint about this? Anyone has analogue deployment?

Thanking you in advance, 

Kind regards,

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