Date: Mon, 17 Jan 2011 09:40:06 +0100 From: =?iso-8859-1?Q?Marcus_M=FCller?= <znek@mulle-kybernetik.com> To: Pawel Jakub Dawidek <pjd@FreeBSD.org>, Anonymous <swell.k@gmail.com> Cc: freebsd-fs@freebsd.org Subject: Re: Multiple ZFS pools and booting Message-ID: <0F00C6FC-518D-43B7-BE95-65BB68E70211@mulle-kybernetik.com> In-Reply-To: <20110116190702.GD82886@garage.freebsd.pl> References: <37C1E643-C7A9-4061-8316-281819AC947E@mulle-kybernetik.com> <20110116190702.GD82886@garage.freebsd.pl>
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Hi Pawel and Anonymous, > There is no way to configure that at this point. The boot code just > boots off of first pool it finds - if there is no bootfs property then > it will just try to boot from the top level dataset (ie. tank). > > What you could try is to add /tank/boot.config file containing: > > muller:/boot/loader > > and if that doesn't work: > > muller/roots/8-current:/boot/loader > > and if that doesn't work I don't know of any other solutions. first thanks for finding the time to answer my question. I've mistaken the "bootfs" property for a global switch indicating that one can boot off this pool, as I somehow misinterpreted this troubleshooting section [http://www.solarisinternals.com/wiki/index.php/ZFS_Troubleshooting_Guide#Pool_Migration_Issues]. I guess a zpool boolean propery like freebsd:canboot which defaults to YES would be a welcome enhancement. Looking at the loader code I believe this isn't too trivial to implement, though. > Exporting the tank pool will work (for now), but it looks like it will > be changed to accept exported pools for booting and skip only destroyed > pools. I've read about this and was a bit worried as it would definitely screw up my server setup. > gptzfsboot skips any non-zfs partition type such as `freebsd-ufs'. > Say, you want to boot from the pool on ad10p5 and > > $ gpart modify -t freebsd-ufs -i 3 ad10 > $ gpart modify -t freebsd-ufs -i 4 ad10 > > should be enough. Does it work for you? This hack does the trick! While I would certainly prefer a property based solution, I'm fine now. Thanks! Cheers, Marcus -- Marcus Mueller . . . crack-admin/coder ;-) Mulle kybernetiK . http://www.mulle-kybernetik.com Current projects: http://www.mulle-kybernetik.com/znek/
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