[mythtv-users] Mythtv FE in a frequent power loss environment

jedi jedi at mishnet.org
Tue Dec 8 15:04:44 UTC 2009

On Tue, Dec 08, 2009 at 06:35:10AM -0700, Brian Wood wrote:
> On Tuesday 08 December 2009 04:42:04 am Rajil Saraswat wrote:
> > Hi,
> > 
> > I would like to setup a front-end in an environment where power
> > failure are a norm. The plan is to have a UPS for the backend so that
> > it cleanly shutdown but the frontend will be on its own.
> > 
> > So is it ideal to go for a diskless frontend (nfs mounted backend)?
> > What happens when FE is alive and a power failure occurs, will it
> > corrupt the backend filesystem.
> > 
> > Also, i plan to use XFS for the backend. Is it a good choice with a
> > UPS which can cleanly shut it down or should i stick to ext3. I havent
> > still built the kit, so open for any tips!
> Why not put a UPS on the F/E? Most F/Es don't pull that much power, so 
> you'd need a smaller unit than for the B/E.

    Why bother? Are you planning on continuing to watch TV during a power
failure? If not, then just have the same power setup as you do for your TV
or stereo.

    If you are worried about a diskless setup leading to a corruption of
a backend file server then don't bother with the diskless setup. Ext2/3 
have served me well in the past in "unreliable" conditions. Your FE should
be able to easily tolerate frequent power outtages.

    Either way, I would not expect power outtages of diskless clients to
corrupt the backend. Have a good disaster recovery plan if you're worried.

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