zfs discuss - Aug 2009 - new disk but zfs/zpool commands hangs

I bought a 1 TB external USB disk from Western Digital (1) and put it in my
2008.11 machine.The machine discovered the disk directly and I did a
''zpool create xpool c11t0d0? command

# zpool list
NAME       SIZE   USED  AVAIL    CAP  HEALTH  ALTROOT
[...]
xpool      928G    81K   928G     0%  ONLINE  -
# zpool status
[...]
  pool: xpool
 state: ONLINE
 scrub: none requested
config:

        NAME        STATE     READ WRITE CKSUM
        xpool       ONLINE       0     0     0
          c11t0d0   ONLINE       0     0     0

errors: No known data errors


So fa, so good. Then I tried to create a ZFS filesystem and copy some data like
this

# zfs create -o casesensitivity=mixed xpool/data
# rsync -a /data/ /xpool/data

After that all commands involving disk access just hanged. zfs, zpool, df can?t
even end them with ctrl-c

Then I pulled the disk USB cable and inserted it again. Then the commands worked
again but I got errors like this. (Just for this disk)

# zpool status -v xpool
  pool: xpool
 state: UNAVAIL
status: One or more devices are faulted in response to IO failures.
action: Make sure the affected devices are connected, then run ''zpool
clear''.
   see: http://www.sun.com/msg/ZFS-8000-HC
 scrub: resilver completed after 0h0m with 0 errors on Sat Aug 15 00:23:35 2009
config:

        NAME        STATE     READ WRITE CKSUM
        xpool       UNAVAIL      0    18     0  insufficient replicas
          c11t0d0   UNAVAIL     12    27     0  experienced I/O failures

errors: Permanent errors have been detected in the following files:

        <metadata>:<0x0>
        <metadata>:<0x11>
        <metadata>:<0x15>
        <metadata>:<0x16>
        <metadata>:<0x2a>

Trying to scrub makes all commands hang again...
# zpool scrub xpool (no output for 3 hours...)

So, is my disk dead or can I just try to create a new pool on it? Ideas???



1) http://www.wdc.com/en/products/products.asp?driveid=563
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