[Xen-users] resize disk image partition

[Kristoffer Harthing Egefelt <k@xxxxxxx>]

Hi,

I'm trying to clarify if it's at all possible to live resize a disk image.

After trying and failing it seems that the reason a disk image cannot be
resized - is that domU is only able to detect changes in partitions (eg.
partprobe), not in block devices as the xvd driver lacks a rescan feature.

My domU sees disk images as blockdevices - that is without a partition
table, and I cannot find a way to boot a domU from a partition within a disk
image?

But if I could get XEN to boot a domU from a partition on a disk image, I
assume the domU via partprobe would see if I resized the partition and could
then resize the filesystem?

Or would it be considered bad practice to modify partitions in a disk image
from dom0 while domU is running?

What do you think - is it impossible to live resize a disk image/partition? 

I'd really like to avoid LVM.

Thanks

Regards
Kristoffer




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