Re: opinion on which software RAID to use

On Thu, 2006-03-02 at 14:11 -0500, Vivek Khera wrote:

Anyhow, I see at least three ways to set up a mirror of these drives
and/or partitions:

gvinum
gmirror
atacontrol

Any opinions on which has both qualities: easy to configure/manage
(ie, recover after failure) and performance? The handbook RAID page
doesn't even mention gmirror. The atacontrol seems very simple to
use, at least.

Let me know what you think. Thanks!

For basic mirroring, I'd say go for gmirror. I've been using it
successfully for a long time. I migrated to it from vinum/gvinum
because it offered more flexible read load-balancing (you can choose
between various policies) and easier recovery. It can even do N-way
mirroring.

I tried atacontrol in the past, but could never get it to reconstruct
after a simulated failure. With gmirror, you have the option of
automatic or manual reconstruction for failed/stale providers.

You might want to consider gvinum if you think you might want to use
RAID 5 or LVM-type aggregations in the future, but if you are just
planning on mirroring I'd strongly suggest going with gmirror.

Cheers,

Paul.
--
e-mail: paul@xxxxxxxxxxxxxxxxxx

"Without music to decorate it, time is just a bunch of boring production
deadlines or dates by which bills must be paid."
--- Frank Vincent Zappa
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