powerpath have some issue in supporting ZFS at Solaris X64?

I have a x64 host with Solaris 10, update 8, and I create a  zpool as below:

zpool create testpool emcpower3a emcpower19a emcpower7a emcpower6a emcpower18a emcpower0a emcpower5a emcpower17a emcpower2a emcpower16a emcpower15a emcpower14a emcpower13a emcpower12a emcpower11a emcpower10a emcpower4a emcpower9a emcpower1a emcpower8a

Then I executed zdb on this pool, I got error  as:

zdb: can't open testpool: Value too large for defined data type

And if I disabled Powerpath, and then the zpool failed to be imported with core dump:

bash-3.00# zpool import testpool

internal error: Value too large for defined data type

Abort (core dumped)

bash-3.00# 

bash-3.00# mdb core

Loading modules: [ libumem.so.1 libnvpair.so.1 libuutil.so.1 libc.so.1 libavl.so.1 libsysevent.so.1 ld.so.1 ]

> ::status

debugging core file of zpool (32-bit) from cdc-x4100s8

file: /sbin/zpool

initial argv: zpool import testpool

threading model: multi-threaded

status: process terminated by SIGABRT (Abort)

>

I already tried with SMI and EFI label, I got the same error, and anybody have the same experiment? any reply is every appreciated.

Thanks!