zfs and 512/4096 sector sizes

On a remote server, I replaced a dead 2TB disk with a new one that had 
4096K sectors.

2014-12-11.22:40:30 zpool replace -f tank1 16144392433229115618 /dev/ada0


My ZFS pool then warned me after

   pool: tank1
  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.

Camcontrol and smartctl confirm the 2TB drive was indeed 4096. (All my 
previous ones were 512, so didnt think to check)

# camcontrol identify ada0 | grep secto
sectors/track         63
sector size           logical 512, physical 4096, offset 0
LBA supported         268435455 sectors
LBA48 supported       3907029168 sectors

# smartctl -a /dev/ada0 | grep -i 512
Sector Sizes:     512 bytes logical, 4096 bytes physical

So, with a new drive, I replaced the 4096 drive

2014-12-16.17:07:14 zpool replace tank1 ada0 ada11

# smartctl -a /dev/ada11 | grep -i 512
Sector Size:      512 bytes logical/physical
# camcontrol identify ada11 | grep -i sector
sectors/track         63
sector size           logical 512, physical 512, offset 0
LBA supported         268435455 sectors
LBA48 supported       3907029168 sectors

yet, zfs is still complaining

# zpool status
   pool: tank1
  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: resilvered 898G in 8h4m with 0 errors on Wed Dec 17 15:01:18 2014
config:

         NAME        STATE     READ WRITE CKSUM
         tank1       ONLINE       0     0     0
           raidz1-0  ONLINE       0     0     0
             ada12   ONLINE       0     0     0
             ada10   ONLINE       0     0     0
             ada6    ONLINE       0     0     0
             ada14   ONLINE       0     0     0
           raidz1-1  ONLINE       0     0     0
             ada11   ONLINE       0     0     0  block size: 512B 
configured, 4096B native
             ada1    ONLINE       0     0     0
             ada8    ONLINE       0     0     0
             ada9    ONLINE       0     0     0
           raidz1-2  ONLINE       0     0     0
             ada13   ONLINE       0     0     0
             ada4    ONLINE       0     0     0
             ada5    ONLINE       0     0     0
             ada7    ONLINE       0     0     0

errors: No known data errors


# zdb | grep -i shift
             metaslab_shift: 35
             ashift: 9
             metaslab_shift: 35
             ashift: 9
             metaslab_shift: 35
             ashift: 9

This is RELENG_9 r275680

Any ideas if the reporting is cosmetic ? Or there is an issue

Sorry for the xpost as this is sort of both a hardware and config issue.

	---Mike


-- 
-------------------
Mike Tancsa, tel +1 519 651 3400
Sentex Communications, [email protected]
Providing Internet services since 1994 www.sentex.net
Cambridge, Ontario Canada   http://www.tancsa.com/
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