xen3.4 and glusterfs 2.1 problem

[rolfi23]

hi guys,

we have two server installed with SLES11 and XEN 3.4.0. we have a iscsi LUN which hosts the domU images and from there the domU start without problem.
Now we want to change the store to glusterfs in version 2.1

but everytime i start a domU on glusterfs, wired if new created or copied from iscsi the domU wont start.

the config file for domu is:

# Automtically generated by ConVirt
name='sles11-1111'
uuid='a820e748-fcbb-66ef-b8a4-615a3364bc61'
memory=512
maxmem=512
vcpus=1
on_poweroff='destroy'
on_reboot='restart'
on_crash='destroy'
localtime=0
keymap='de'
builder='linux'
bootloader='/usr/bin/pygrub'
bootargs=''
extra=' '
disk=['file:/var/cache/convirt/vm_disks/sles11-1111,xvda,w']
vif=['mac=00:16:3e:55:e6:e8,bridge=br0']
vfb=['type=vnc,vncunused=1']
kernel=''
ramdisk=''
root=''
STORAGE_STATS={'DISK_STATS': {'/var/cache/convirt/vm_disks/sles11-1111': {'DEV_TYPE': 'FILE', 'IS_LOCAL': True, 'DISK_SIZE': 3221225472, 'DISK_NAME': '/var/cache/convirt/vm_disks/sles11-1111'}}, 'LOCAL_ALLOCATION': 3221225472, 'SHARED_ALLOCATION': 0}
on_shutdown=None

we have 8 domUs running on iscsi share formatted with ocfs2. all domus configfile harddisk = file

tap:aio doesnt work on localdisk and iscsi share.

but i dont know why file based images wont run on glusterfs 2.1

Thank you for your help
any solutions?

thank you very much