Hi Jaime,

sorry for my late reply.

We identified the problem - the snapshot which was created was too small. It seems that the "SIZE" attribute was ignored.
The COW-table size was at 512MB which is the default.

We fixed this problem by adjusting the default value in the driver configuration.

Cheers!

Yves


On 23.05.2012, at 15:58, Jaime Melis wrote:

Hello Yves,

Could it be that you don't have rw access to the image? Can you double-check your permissions?

ls -l $(readlink -f /var/lib/one/datastores/0/<VM_ID>/disk.0)

take a look at the group attribute of that block device. Can oneadmin read/write it? If that's not the case you'll probably need to

gpasswd -a oneadmin <block_device_group>

BTW: I'm taking notice of this to reflect it in the documentation

cheers

On Tue, May 22, 2012 at 5:43 PM, Vogl, Yves <v...@adesso-mobile.de> wrote:
Hi,

we are experiencing trouble when using OpenNebula with KVM, LVM on CentOS.

We've tried using virtio and ide, with and without caching - the problem remains.

The VM mounts its filesystem readonly and logs "journal I/O commit error", on the host system we get "end_request: I/O error, dev vda, sector" errors.

Has some experienced similar problems?

Cheers,
Yves



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Jaime Melis
Project Engineer
OpenNebula - The Open Source Toolkit for Cloud Computing
www.OpenNebula.org | jme...@opennebula.org

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