Date: Sun, 12 Feb 2012 13:20:02 GMT From: Marius Strobl <marius@alchemy.franken.de> To: freebsd-sparc64@FreeBSD.org Subject: Re: sparc64/165025: [PATCH] zfsboot support for sparc64 Message-ID: <201202121320.q1CDK2QV027570@freefall.freebsd.org>
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The following reply was made to PR sparc64/165025; it has been noted by GNATS. From: Marius Strobl <marius@alchemy.franken.de> To: bug-followup@FreeBSD.org, gavin.mu@gmail.com Cc: Subject: Re: sparc64/165025: [PATCH] zfsboot support for sparc64 Date: Sun, 12 Feb 2012 14:16:19 +0100 > Known Limitations: > 1. only zpool on a whole disk is supported, zfs boot from zpool in VTOC8 partitions may not work. Uhm, are you sure you didn't have (the remnants) of a VTOC label on the disk? I'd expect the firmware to refuse to boot from a disk not having one. > 2. boot from mirror/raidz is not supported due to limited dev environment. Could you also tackle these remaining bits or at least describe what it would take to support booting from a zpool in a VTOC label, mirror and raidz? > > >How-To-Repeat: > NA. > >Fix: > generic steps: > 1. build zfsboot and zfsloader > 2. create zpool on your disk > # zpool create tank /dev/<your disk, ie. ada0> > 3. export the zpool > # zpool export tank > 4. install zfsboot > # dd if=boot1 of=/dev/<your disk, ie. ada0> bs=512 skip=1 oseek=1 conv=notrunc Assuming there is a VTOC8 label, this could also be done using `gpart -b`, no? > 5. install zfsloader to ZFS Book Block location > # dd if=zfsloader of=/dev/<your disk, ie. ada0> bs=512 oseek=1024 conv=notrunc I think to vaguely remember there being a zfs command/way of writing a loader to that 3.5MB boot block area following the uberblock. Do you know what it is? In any case, nice work so far! Marius
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