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Posted to users@cloudstack.apache.org by Natalia Costas Lago <na...@cesga.es> on 2016/11/05 22:22:59 UTC
Problem downloading volume with gluster as primary storage
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,
Re: Problem downloading volume with gluster as primary storage
Posted by Natalia Costas Lago <na...@cesga.es>.
Dear all,
It seems... that we have found the issue..
Our setup is gluster 3.8 + cloudstack 4.9 + centos7 with kernel
upgraded to 4.8 (we upgraded the kernel as we saw improvements in
network performance in other scenarios)
It seems the new Linux kernel 4.8 breaks Qemu reading from gluster
volumes. Back to 3.10 everything seems to be back to normal.
Anyone has deployed over Ubuntu16 + gluster as primary storage? Ubuntu
16 comes with the newer kernel by default.
Thanx,
El 05/11/2016 a las 23:22, Natalia Costas Lago escribi�:
> 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,
--
====================================================
Natalia Costas Lago
Senior Communications Technician
Galicia Supercomputing Centre (CESGA)
(CESGA on Twitter | CESGA on Facebook)
Avenida de Vigo, s/n (Campus Vida)
15705 Santiago de Compostela - SPAIN
E-mail: natalia@cesga.es
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Fax: +34 981 59 46 16
Web: https://www.cesga.es/
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