zpool asize problem on 11.0

[Stefan Bethke]

I’ve just created two pools on a freshly partitioned disk, using 11.0 amd64, and the shift appears to be 9:

# zpool status -v host
  pool: host
 state: ONLINE
status: One or more devices are configured to use a non-native block size.
	Expect reduced performance.
action: Replace affected devices with devices that support the
	configured block size, or migrate data to a properly configured
	pool.
  scan: none requested
config:

	NAME         STATE     READ WRITE CKSUM
	host         ONLINE       0     0     0
	  gpt/host0  ONLINE       0     0     0  block size: 512B configured, 4096B native

errors: No known data errors

# zdb host | grep ashift
                ashift: 9
                ashift: 9

But:
# sysctl vfs.zfs.min_auto_ashift
vfs.zfs.min_auto_ashift: 12

Of course, I’ve noticed this only after restoring all the backups, and getting ready to put the box back into production.

Is this expected behaviour?  I guess there’s no simple fix, and I have to start over from scratch?


Stefan

-- 
Stefan Bethke <stb at lassitu.de>   Fon +49 151 14070811