Date: Thu, 16 Apr 2009 09:52:28 -0700 From: George Hartzell <hartzell@alerce.com> To: Ollivier Robert <roberto@keltia.freenix.fr> Cc: freebsd-fs@freebsd.org Subject: Re: Booting from ZFS raidz Message-ID: <18919.25164.567669.809759@already.local> In-Reply-To: <20090416160128.GA831@keltia.freenix.fr> References: <9461581F-F354-486D-961D-3FD5B1EF007C@rabson.org> <C3970DC5-43A8-4F04-AC55-292F27A30275@lassitu.de> <20090416160128.GA831@keltia.freenix.fr>
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Ollivier Robert writes: > According to Stefan Bethke: > > Created a GPT label and one partition on each of the three drives: > > > > gpart create -s gpt $1 > > gpart add -b 34 -s 128 -t freebsd-boot $1 > > gpart bootcode -b /boot/pmbr -p /boot/gptzfsboot -i 1 $1 > > gpart add -b 512 -s 41900000 -t freebsd-zfs $1 > > gpart list $1 > > Coming back to this thread, I'm playing with this setup (and the script > mentioned in another thread). When I try to > > zpool set bootfs=tank > > with tank containing a raidz array, zpool refuses to set the property, > saying it is not available. Using the same commandline on a mirror works. In Doug's original email announcing raidz boot support, http://kerneltrap.org/mailarchive/freebsd-fs/2008/12/17/4441084 he says: Currently the ZFS kernel code refuses to allow you to set the bootfs pool property on raidz pools (because Solaris can't boot from them). This means that you are limited to booting from the root filesystem of the pool for now (it shouldn't be hard to relax this restriction). The root filesystem of the pool should contain a directory /boot with the usual contents which must include a /boot/loader which was built with the 'LOADER_ZFS_SUPPORT' make option. Which jsut means that you need a populated boot directory at the top of the tank (e.g. /data/boot). If you're using the create-zfsboot-gpt.sh file that was posted here recently, you'll need to rework it a bit, since it puts the root dir at /data/ROOT/data. g.
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