Date: Thu, 20 Nov 2008 16:40:23 +0000 From: Doug Rabson <dfr@rabson.org> To: Ulf Lilleengen <lulf@stud.ntnu.no> Cc: freebsd-fs@freebsd.org Subject: Re: ZFSBoot try and bsdlabel bootstrap code Message-ID: <81FBD67A-6908-4416-822D-CF943CDD50CF@rabson.org> In-Reply-To: <20081120172634.GA1438@carrot.studby.ntnu.no> References: <367b2c980811191412h5e0af470k165b37edc2fc5853@mail.gmail.com> <16C31872-6A83-4FAB-AC85-213D604CDDE4@rabson.org> <20081120172634.GA1438@carrot.studby.ntnu.no>
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On 20 Nov 2008, at 17:26, Ulf Lilleengen wrote: > On Thu, Nov 20, 2008 at 04:07:50PM +0000, Doug Rabson wrote: >> >> On 19 Nov 2008, at 22:12, Olivier SMEDTS wrote: >> >>> Hello, >>> >>> I want to boot off a ZFS pool (version 13) on an USB stick for >>> testing >>> purposes. But I'm stuck with the bsdlabel bootstrap code size... >>> I'm using a 2 hours old CURRENT. >>> >>> # kldload usb2_storage_mass >>> # kldload zfs >>> # dd if=/dev/zero of=/dev/da0 bs=512 count=32 >>> # fdisk -BI da0 >>> # dd if=/dev/zero of=/dev/da0s1 bs=512 count=32 >>> # bsdlabel -wB -b /boot/zfsboot da0s1 >>> bsdlabel: boot code /boot/zfsboot is wrong size >>> >>> Is what I'm trying to do with bsdlabel wrong ? >>> I previously tried with the default bootstrap code but I had an >>> (expected) "boot: Not ufs" error at boot. >>> >>> PS : I'm not subscribed to this list. >> >> The process for install zfsboot is a bit manual (and undocumented). > I see bsdlabel is restricted by BBSIZE. Could we perhaps increase > it? or is > this something that will break everything? I suspect it might be > hard to > maintain bsdlabel backwards compability with such a change. As an > alternative, adding a flag for extended block size might be an option. That won't help much - bsdlabel understands how to install bootcode for UFS only. The boot process for ZFS is a bit different.
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