zfs discuss - Mar 2010 - zpool import as unavailable when mpxio disabled

I have 1 host with Solaris 10 update 8 and it linked with stk6540 array(the host
type set to traffic manager), and host have 4 paths and 2 linked to the
controller A and the rest 2 linked to controller B, when I disabled the MPxIO
and the host reboot, then I checked the zpool status, the testpool imported as
unavailable, the reason is zpool still try to import zpool with the MPxIO device
files, actually they were not available again, and if I export this pool and
re-import it again, the pool can be imported with the correct device files.

But I did the same test with one Solaris 10 U8 host linked to IBM ess800, and
when MPxIO disable, the zpool can import correctly with the correct device
files.

The scenario confuse me, and do anybody have experiment on it?Any reply is very
appreciated.

Thanks,Ming
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and one thing confuse me is that parts of disk as OS devices and parts of MPxIO
device:
bash-3.00# zpool status
  pool: tpool1
 state: UNAVAIL
status: One or more devices could not be opened.  There are insufficient
        replicas for the pool to continue functioning.
action: Attach the missing device and online it using ''zpool
online''.
   see: http://www.sun.com/msg/ZFS-8000-3C
 scrub: none requested
config:

        NAME                                       STATE     READ WRITE CKSUM
        tpool1                                     UNAVAIL      0     0     0 
insufficient replicas
          c2t203400A0B8292ED6d9s2                  ONLINE       0     0     0
          c2t203400A0B8292ED6d11s2                 ONLINE       0     0     0
          c6t600A0B800029295400005F6F49120B85d0s2  UNAVAIL      0     0     0 
cannot open

What''s the error from?

Thanks all.
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