Date: Tue, 14 Oct 2008 16:28:22 -0500 From: Brooks Davis <brooks@freebsd.org> To: Daniel Jameson <DJameson@emerytelcom.com> Cc: freebsd-current@freebsd.org Subject: Re: ZFS attaching direct access drives as Scsibus#target#drive# Message-ID: <20081014212822.GA12551@lor.one-eyed-alien.net> In-Reply-To: <0A8710FF880BBB4687AEC66F9DCF7D0C26B462@SERVER1.emerytelcom.com> References: <0A8710FF880BBB4687AEC66F9DCF7D0C26B462@SERVER1.emerytelcom.com>
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--BXVAT5kNtrzKuDFl Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Oct 14, 2008 at 01:56:01PM -0600, Daniel Jameson wrote: > Hello, >=20 > =20 >=20 > I'm in the process of building several zfs pools for a backup-server, > the machine has 2 24 port sata 3 controllers and 48 1TB drives for > storage. I've done a little testing and found that building a pool by > using the da# device names can be inconsistent. For example if a device > is lost from the first controller and the box is re-booted all the da#s > shuffle up, which creates problems with adjacent pools, and the > potential for catastrophic failure. In the Sun documentation zpool > allows a pool to be built by using S#T#D# (Scsibus Target Drive) syntax, > when I attempt it in FBSD It returns:" cannot use '/dev/c0t0d0': must be > a GEOM provider" does anyone know a way to statically map a > scsibus/target/drive to a specific da# or a fix to allow specific drives > by target numbers to be added to a zpool? The Sun documentation is not at all relevent when you get to the disk attachment bit since we use geom. You can wire da# allocation down which should do what you want. There's some documentation in sys/conf/NOTES. -- Brooks --BXVAT5kNtrzKuDFl Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.8 (FreeBSD) iD8DBQFI9Q72XY6L6fI4GtQRAkkQAKDQWzhisxiNhVQ3sgi2qnFdWp8cCQCcDBi0 bWcbaP7+VKs/Ql3e5XzMliY= =V4QA -----END PGP SIGNATURE----- --BXVAT5kNtrzKuDFl--
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