ZFS: i/o error - all block copies unavailable on large disk number machines

[Chuck Swiger]

On Jan 23, 2012, at 9:04 AM, Steven Hartland wrote:
> After some digging we discovered that this was likely due to the fact that the BIOS only enumerates the first 12 disks and this machine has more than that in the root zpool which was a striped raidz2 volume. This in turn means that the bootcode 
> can't complete and hence the machine can't boot.

As far as I can tell, ZFS best practices guides recommend no more than nine drives in a group/pool.  Putting more than that into a pool, much less something you are trying to boot from, seems like a fine experiment to make but is not something which I would rely upon...

Regards,
-- 
-Chuck