Re: [Gluster-devel] Hello... stripping and fault tolerant systems...

[Amar S. Tumballi]

>
> >
> > AFR ( STRIPE (server1, server2), server3)
> >
> > Let afr serve over the stripe for high performance by default, and
> server3
> > be a backup. This works well for read-heavy workloads.
>
> How will afr over stripe help for read-heavy work loads?
>
Kris, this is because, you can say 'read-subvolume' as stripe volume,
through which you can read faster (because read calls can be sent parallally
to two nodes, and hence faster).


>
> I suggested stripe over afrs keeping in mind AFR's currently bad selfheal
> logic
> for big files. Selfheal will be very optimal in stripe over afrs.
>
For the very reason AFR over STRIPE makes sense. because in this case, afr
doesn't see any files with holes, where as in stripe over afr, you see files
with holes below afr.

Amar


>
> Krishna
>
> >
> > avati
> >
>
>
-- 
Amar Tumballi
Gluster/GlusterFS Hacker
[bulde on #gluster/irc.gnu.org]
http://www.zresearch.com - Commoditizing Super Storage!