I have a kvm environment where a shared disk mounted by 2 VMs through rbd ceph. What I would like to know that in the future how is it possible to expand OCFS2 filesystem what I planning to use on top of it:
LVM2 is not an option:
"As of this writing OCFS2 is not integrated or supported with any volume managers. The procedure to extend an existing OCFS2 repository is done manually from only one Oracle VM server pool member (dom0)."
"It is important to note that creating OCFS2 volumes on logical volumes (LVM) is not supported. This is due to the fact that logical volumes are not cluster aware and corruption of the OCFS2 file system may occur."
In other cases when some of these KVM machines needs more disk I can add more disks on the fly to them (eg.: vdb, vdc, vdd) then pvadd them to LVM then simply grow my logical volumes but if this is not possible with OCFS2 then what is the solution for doing this? (Preferrably that I don't ever have to shut the VM down or umount the filesystem for it).