Re: geom_raid5 inclusion in HEAD?

From: Ivan Voras <ivoras_at_freebsd.org>
Date: Wed, 7 Nov 2007 13:50:28 +0100
On 07/11/2007, Arne Wörner <arne_woerner_at_yahoo.com> wrote:

> graid5 puts write requests for about kern.geom.raid5.wdt seconds (but not less
> than 1-2 seconds) into the write cache (if there is enough space left in
> graid5's write cache)... I would guess that this behaviour is pretty
> incompatible with soft-updates with power outage...

Can this cache be disabled?

> Then there still is the write cache of the hard discs (I dont know how long it
> waits, but that time would come in addition to graid5's delay)...
>
> Maybe gjournal could help, because graid5 honors the BIO_FLUSH, but that is
> untested...

Yes, AFAIK this would work.
Received on Wed Nov 07 2007 - 11:50:36 UTC

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