[Gluster-users] snapshots questions

[Dmitry Filonov]

Hi,
 am really new to gluster and have couple question that I hope will be
really easy to answer. Just couldn't find anything on that myself.

I did set up replica 3 gluster over 3 nodes with 2TB SSD in each node.
To have snapshot functionality I have created thin pool of the size of VG
(1.82TB) and then 1.75TB thin LVM inside on each of the bricks.
It worked just fine until I scheduled creating hourly and daily snapshots
on that gluster volume. In less than 2 days my thin volume got full and
crashed.
Not refused creating new snapshots, but just died as LVM couldn't perform
any operations there anymore.
So my first question is how to prevent this from happening. I could create
smaller thin LVM, but I still have no control how much space I would need
for snapshots. I was hoping to see some warnings and errors while creeating
snapshots, but not failed LVM/Gluster.

The second question is related but not that important. Is there a way to
schedule snapshot removal in cron? gluster snapshot delete requires
interactive confirmation and I don't see any flag to auto-confirm snapshot
removal.

Thank you,

Fil

--
Dmitry Filonov
Linux Administrator
SBGrid Core | Harvard Medical School
250 Longwood Ave, SGM-114
Boston, MA 02115
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