ZFS on root booting broken somewhere after r270020

[Kimmo Paasiala]

> On 9.9.2014, at 18.53, Steven Hartland <killing at multiplay.co.uk> wrote:
> 
> ----- Original Message ----- From: "Kimmo Paasiala" <kpaasial at icloud.com>
>> Hi it’s me again. Something that was committed in stable/10 after r271213 up to
>> and including r271288 broke ZFS on Root booting in exactly the same way again.
>> I know the problem is no longer related to extra kernel modules loaded in
>> /boot/loader.conf because I’m loading only the required zfs.ko and opensolaris.ko
>> modules. Also, the new vt(4) console that I’m using is not the culprit because the
>> same thing happens with kern.vty set to “sc”.
> 
> I've just updated my stable/10 box to r271316 and no problems booting from a ZFS root.
> 
> So first things first what error are you seeing?
> 
> Next what is you're:
> * Hardware
> * Pool layout
> 
>   Regards
>   Steve 

The error is the same as before:

	• Mounting from zfs:rdnzltank/ROOT/default failed with error 5.

Followed by the mountroot prompt and I get only these devices to choose from, no sign of the ZFS pool:

	• mountroot>
	• List of GEOM managed disk devices:
	•   gpt/fb10disk1 gpt/fb10swap1 diskid/DISK-S13UJDWS301624p3 diskid/DISK-S13UJDWS301624p2 diskid/DISK-S13UJDWS301624p1 ada0p3 ada0p2 ada0p1 diskid/DISK-S13UJDWS301624 ada0

Hardware is a Gigabyte GA-D510UD Mini-ITX motherboard:

http://www.gigabyte.com/products/product-page.aspx?pid=3343#ov

4GBs of RAM. One 750GB Samsung HD753LJ 3.5” SATA HD on the Intel SATA controller.

Pool layout:

 pool: rdnzltank
 state: ONLINE
  scan: scrub repaired 0 in 1h7m with 0 errors on Wed Aug 20 09:27:48 2014
config:

        NAME             STATE     READ WRITE CKSUM
        rdnzltank        ONLINE       0     0     0
          gpt/fb10disk1  ONLINE       0     0     0

errors: No known data errors

Output of ‘gpart show’:

freebsd10 ~ % gpart show    
=>        34  1465146988  ada0  GPT  (699G)
          34        2014        - free -  (1.0M)
        2048        1024     1  freebsd-boot  (512K)
        3072        1024        - free -  (512K)
        4096    16777216     2  freebsd-swap  (8.0G)
    16781312  1448365710     3  freebsd-zfs  (691G)


HTH,

-Kimmo