Old 27th August 2010, 19:15
vaiojunkie vaiojunkie is offline
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Default Ubuntu iSCSI lun backup

I've followed the howto and successfully setup iSCSI Initiator and Targets. I'm exporting lvm2 logical volumes over iSCSI and the Initiator is a Xen server pool on which I have installed a Debian VM for testing. That part works well but the trouble I'm having now is backing up the LUN/LVM using LVM snapshots.

I created a LVM snapshot OK but when I try to mount it I get the following error

root@nas1:/home/wayne# mount /dev/vg0/lun1snap /mnt/lun1snap
mount: unknown filesystem type 'LVM2_member'
The layers I have are thus

LVM group = vg0
LVM lv = /dev/vg0/storage_lun1
LVM lv snapshot = /dev/vg0/lun1snap
ISCSI target = Lun 0 Path=/dev/vg0/storage_lun1,Type=fileio
The data I'm trying to backup is the VM image files and not the partitions within the VM's as I would like to be able to restore the whole VM if needed but I'm lost in the layers!

Thanks for reading.
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