Date: Wed, 15 Oct 2008 12:32:27 +0200 From: "=?ISO-8859-1?Q?Marius_N=FCnnerich?=" <marius@nuenneri.ch> To: "Zaphod Beeblebrox" <zbeeble@gmail.com> Cc: freebsd-current@freebsd.org, Daniel Jameson <DJameson@emerytelcom.com> Subject: Re: ZFS attaching direct access drives as Scsibus#target#drive# Message-ID: <b649e5e0810150332r44678760r2ef79b3a0234a376@mail.gmail.com> In-Reply-To: <5f67a8c40810142200o6074cd42hec0ff6f2b87d3648@mail.gmail.com> References: <0A8710FF880BBB4687AEC66F9DCF7D0C26B462@SERVER1.emerytelcom.com> <5f67a8c40810142200o6074cd42hec0ff6f2b87d3648@mail.gmail.com>
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On Wed, Oct 15, 2008 at 7:00 AM, Zaphod Beeblebrox <zbeeble@gmail.com> wrote: > On Tue, Oct 14, 2008 at 3:56 PM, Daniel Jameson <DJameson@emerytelcom.com>wrote: > >> >> 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? > > > Forgive me for asking (because it would surprise me if it didn't), but > doesn't ZFS' GEOM attach taste figure out what drives go where all by > itself? Isn't there sufficient information on a disk to allow ZFS to place > it into the correct pool? I think there is, take a look at this: http://blogs.sun.com/constantin/entry/csi_munich_how_to_save The Video is no longer at google video, but there is this working link at bottom: http://mediacast.sun.com/share/constantin/csi_muc_en.mp4 > > certainly glabel'ing the drives should work just fine if zfs doesn't, but > it's a hack of a solution. > > glabel can have some funny effects due to the geom taste order. If > something is part of a mirror (for instance) and the label tastes before the > mirror, I've seen items of the mirror come up with glabel instead of > attaching to the mirror. > _______________________________________________ > freebsd-current@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-current > To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org" >
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