[rescue] OS for ZFS?

Scott Newell newell+rescue at n5tnl.com
Wed Apr 3 19:34:41 CDT 2013

At 09:20 PM 3/31/2013, Cory Smelosky wrote:
>On 31 Mar 2013, at 21:35, Scott Newell wrote:
>>Googling around a bit, I wonder...maybe I could set up a small ufs
>>boot partition and have the root filesystem zfs?
>You might be able to with a bit of a hack.  You would need to modify
>initscripts I think and then jump to the secondary rootfs.

Almost there!  I followed the recipe from 

Which seems to work, mostly.  But when I try and boot the zfs root 
disk, it traps once, then boots the disk!  (It boots the first time 
with a standard non-zfs installation on my other drive.)

Here's the mount:

zroot on / (zfs, local, nfsv4acls)
devfs on /dev (devfs, local, multilabel)
zroot/data on /data (zfs, local, nfsv4acls)
zroot/tmp on /tmp (zfs, local, nfsv4acls)
zroot/usr on /usr (zfs, local, nfsv4acls)
zroot/var on /var (zfs, local, nfsv4acls)

And the boot:

Rebooting with command: boot disk1
Boot device: /pci at 1f,4000/scsi at 3/disk at 1,0  File and args:
Trap 3e
{0} ok boot disk1
Boot device: /pci at 1f,4000/scsi at 3/disk at 1,0  File and args:

 >> FreeBSD/sparc64 boot block
    Boot path:   /pci at 1f,4000/scsi at 3/disk at 1,0:a
    Boot loader: /boot/loader
Consoles: Open Firmware console

Booting with sun4u support.

FreeBSD/sparc64 bootstrap loader, Revision 1.0
(root at araz.cse.buffalo.edu, Mon Apr  9 23:14:08 UTC 2012)
bootpath="/pci at 1f,4000/scsi at 3/disk at 1,0:a"
Loading /boot/defaults/loader.conf
/boot/kernel/kernel data=0xa0b248+0x6e830 syms=[0x8+0xadc40+0x8+0xa05cc]
/boot/kernel/zfs.ko text=0x20ba50 data=0x5808+0x16eb0 

Now the battery is dead in this box, so maybe that's part of the 
problem.  I'll move the disks, cpus, and ram over to a known good box 
next week.

Thanks for all the advice!

newell  N5TNL 

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