zpool destroy problem

 Hi,

How to destroy a pool with errors without a reboot? Zpool status is

  pool: xxroot

 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: scrub completed after 0h13m with 0 errors on Sun Jun 17 10:12:29 2012

config:

 

        NAME                                     STATE     READ WRITE CKSUM

        xxroot                                   UNAVAIL      0     0     0  insufficient replicas

          c5t60060E800546C500000046C50000713Dd0  UNAVAIL      0     0     0  cannot open

          c5t60060E800546C500000046C500007147d0  UNAVAIL      0     0     0  cannot open

          c5t60060E800546C500000046C500007146d0  UNAVAIL      0     0     0  cannot open

          c5t60060E800546C500000046C5000071D0d0  UNAVAIL      0     0     0  cannot open