I'm experimenting with using OpenVZ for shared-root guest VMs. Thus far
I have managed to get most of it working using GFS for /vz/private. I
can start up the same guest on two different hosts (both of which mount
the same /vz/private GFS volume), and both guests come up fine without
trashing the file system.
The problem is that I also need each guest to have some private disk
space, e.g. under /cdsl.local. I have tried to work around this by
bind-mounting /vz/local to /vz/private/1/cdsl.local on the two hosts
before starting the VMs.
However - this doesn't appear to have the desired effect. The guests
still see the GFS file system rather than the bind mount that was
mounted there before the VM started.
This would imply that the guest VM sees only the fs mounted under
/vz/private/VMID, rather than the aggregate file systems that might be
mounted there.
Is this a bug, or is this intended behaviour?
Further, since bind-mounting such private volumes from the host doesn't
seem to work, how do I add a private disk volume of some description
inside the guest?
Gordan
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