upgrade btrfs on GoFlex Net?

[cls42]

Following the install instructions at http://archlinuxarm.org/platforms/armv5 ... oflex-home,
I installed the ArchLinuxARM-armv5te-latest.tar.gz of 28-Nov-2013 on my new GoFlex. Very nice!
Netconsole was very handy.
Now I've got ArchlinuxARM on a 16 GB USB thumb drive and Jeff's uInitrd v0.6 and uBoot in NAND. uname -a says,
Linux dumbo 3.1.10-22-ARCH #1 PREEMPT Fri Jun 28 21:43:02 CDT 2013 armv5tel GNU/Linux

Then I rebooted with a USB hub and updated Arch and rebooted again with my preferred network settings.
Then I tried attaching an old laptop drive on USB and mkfs.btrfs'ed it and got an error on mount.
Dec 28 16:51:06 dumbo kernel: [ 7592.093676] btrfs: open_ctree failed
But
$this->bbcode_second_pass_code('', 'mkfs.btrfs -O ^extref')
fixed that.

Should I update the B-Tree File System kernel module and utilities before setting up two big drives with btrfs? Or is that extref error normal and expected?

[WarheadsSE]

You might want to get linux-kirkwood on there first.

[cls42]

As root, I said
$this->bbcode_second_pass_code('', 'pacman -S linux-kirkwood')
Arch said, "linux-kirkwood and linux are in conflict. Remove linux? [y/N]", I said yes.
I rebooted,uname -a says
Linux dumbo 3.12.6-2-ARCH #1 PREEMPT Tue Dec 24 21:09:18 MST 2013 armv5tel GNU/Linux
Tried my btrfs test, it's working now. Thanks WarheadsSE!