8-STABLE won't boot with ZFSv28

[Holger Kipp]

Hi all,
I have a very irritating problem with 8-STABLE and ZFSv28

I upgraded to 8-STABLE as of yesterday (31.05.2011),
downloaded stable-8-zfsv28-20110521.patch.xz
and applied the patch using

cd /usr/src
patch -E -p0 < /path/to/patchfile
make buildworld
make buildkernel KERNCONF=foo
make installkernel KERNCONF=foo
make installworld
mergemaster

which all went smoothly.

After reboot, I only got
unknown: WARNING - ATAPI_IDENTITFY requeued due to channel reset LBA=0
all the time, and then after an hour or so (wasn't on site),
system gave
Fatal trap 12: page fault while in kernel mode
cupid - 0; apic id = 00
fault virtual address = 0x8
fault code                       = supervisor read data, page not present
instruction pointer    = 0x20:0xffffffff80252301
stack poiner                   = 0x28:0xffffff80000a7ac0
frame pointer                = 0x28:0xffffff80000a7b00
code segment                = base 0x0, limit 0xfffff, type 0x1b
                                               = DPL 0, pres1, long 1, def32 0, gran 1
processor eflags         = interrupt enabled, resume, IOPL = 0
current process           = 0 (thread taskq)trap number               = 12
panic: page fault
cpuid = 0
Uptime: 1h0m13s
Cannot dump. Device not defined or unavailable.
Automatic reboot in 15 seconds - press a key on the console to abort


Needless to say the system did not reboot. Had to powercycle.

Then always got the
unknown: WARNING - ATAPI_IDENTITFY requeued due to channel reset LBA=0
error about once per second.

Have now used a fixit-disk to change back to the old kernel:
FreeBSD 8.2-STABLE #12: Mon Apr 18 12:48:56 CEST 2011
and rebootet.
Now zfs claims to be v28, current storage pool is at 15.I'd love to
try ZFSv28, but with the old kernel I don't think
this is a good idea - but with the new kernel it seems I can't
even boot properly.
Any suggestions as to how to proceed?

Best regards,
Holger



--
Holger Kipp
Diplom-Mathematiker
Senior Consultant

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