Hi,
Lately I've been working on XEN RBD SM and I'm using RBD's built-in
snapshot functionality.
My system looks like this:
base image -> snapshot -> snaphot is used to create XEN VM's volumes ->
volume snapshots (via rbd snap..) -> another VMs -> etc.
I'd like to be able to delete one of the volumes "in the chain" but
without cloning base image blocks that hadn't changed yet (I'm trying to
save up space) as it is done "by default" while flattening snapshots.
Is this possible and if it is, then how can I achieve this?
Also, we wanted to tune a bit ceph images while they're being created
and we're unable to set any of the striping options succesfully - We're
setting variables with correct values (even copying those in
documentation) and we get errors from librbd during image creation or
image mapping.
I can post you our ceph.conf and CRUSH map if needed.
--
Regards
Michał Chybowski
Tiktalik.com
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