On Sat, Jun 14, 2008 at 02:51:31PM -0500, Bob Friesenhahn wrote:
> 
> I think that "none requested" likely means that the administrator has 
> never issued a request to scrub the pool.

Or the system.  That status line will show the last scrub/resilver to
have taken place.  "None requested" means that no scrub/resilver has
happened.

> How often to scrub depends on how much you care about your data and 
> how invasive the scrub is to other activities (I/O bandwidth 
> consumption, snapshots, acoustic noise, electricity consumption), and 
> how long the scrub takes.  My pool is set to be scrubbed every night 
> via a cron job:

And like all other things of this nature, the more often you do it, the
less invasive it will be as there is less to do.  That being said, I still
wouldn't recommend hourly scrubs. ;)

> The statistical chances of problems during disk resilvering are surely 
> significantly improved if scrub is executed often since scrub and 
> resilvering both access the same data.  This is based on the "Does the 
> sun comes up every day?" principle.

Also I would think that this would in the worst case scenario reduce the
amount of time to resilver, but I could be wrong.

-brian
-- 
"Coding in C is like sending a 3 year old to do groceries. You gotta
tell them exactly what you want or you'll end up with a cupboard full of
pop tarts and pancake mix." -- IRC User (http://www.bash.org/?841435)
_______________________________________________
zfs-discuss mailing list
zfs-discuss@opensolaris.org
http://mail.opensolaris.org/mailman/listinfo/zfs-discuss

Reply via email to