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Date:      Mon, 16 Aug 2004 21:01:45 -0600 (MDT)
From:      Scott Long <scottl@freebsd.org>
To:        Herve Boulouis <amon@sockar.homeip.net>
Cc:        freebsd-scsi@freebsd.org
Subject:   Re: Adding a raid volume without reboot
Message-ID:  <20040816205945.Q32601@pooker.samsco.org>
In-Reply-To: <20040816190122.K30117@ra.aabs>
References:  <20040816190122.K30117@ra.aabs>

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On Mon, 16 Aug 2004, Herve Boulouis wrote:
> Hi list,
>
> I've a dell poweredge with an embedded adaptec raid controller (aac driver)
> and I would like to know if it is possible to add a new raid volume without
> rebooting.
>
> It seems you can create the new volume while the system is running
> using the aaccli utility but will freebsd see the new device (/dev/aacd...)
> when it is created ? Is creating the missing /dev entries sufficient ?


On FreeBSD 5.x, the /dev/aacdX entry will be created as soon as the
controller announces it.  On 4.x you might need to manually create the
node, and that is irregardless of needing a reboot or not.

So the short answer is that FreeBSD will see arrays come and go in real
time on Adaptec RAID controllers and will do the right thing.

Scott



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