ZFS bootloader issues

[Philip Jocks]

Hi,

I hope this is the right list.

I recently installed a new server with FreeBSD 10, roughly following this Wiki page
https://wiki.freebsd.org/RootOnZFS/GPTZFSBoot/9.0-RELEASE

The machine holds 5x3TB S-ATA Disks in hardware RAID 6, since the controller doesn't support JBOD and I didn't want to create 5 RAID0 arrays because that sounded like more trouble than it would help.
Yesterday I found out that the ISP didn't get me a Dual CPU machine, but only a single CPU machine, so today they installed a second CPU and started the box again, but it wouldn't boot, the Bootloader throws this error:

--
ZFS: i/o error - all block copies unavailable
ZFS: can´t find filesystem by guid
ZFS: i/o error - all block copies unavailable
ZFS: can´t find filesystem by guid

can´t load ´kernel´
--

I tried re-adding the bootcode by issuing "gpart bootcode -b /boot/pmbr -p /boot/gptzfsboot -i 1 mfid0", but it didn't help.
If I boot from CD I can access the Filesystem just fine.

Any pointers would be greatly appreciated.

Cheers,

Philip