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Date:      Wed, 2 May 2012 20:03:19 +0800
From:      suken woo <sukenwoo@gmail.com>
To:        fs@freebsd.org, current@freebsd.org, stable@freebsd.org,  questions@freebsd.org
Subject:   urgent system suddenly boot failed due to ZFS:i/o error on FreeBSD 8.2
Message-ID:  <CAOrwyN3C4N0=_%2B0j2SpPmH7jmJ4=H9EFv6euKL_PrY1sTzTy_Q@mail.gmail.com>

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hi,lists
  for some reasons I need restart system but it suddenly boot failed today.
here is the error:
ZFS: i/o error - all block copies unavailable
ZFS: can't read object set for dataset 16
Can't find root filesystem - giving up
ZFS:unexcepted object set type 0
ZFS:unexcepted object set type 0

FreeBSD/i386 boot
Default: zroot:/boot/kernel/kernel
boot:
ZFS:unexcepted object set type0

FreeBSD/i386 boot
Default: zroot:/boot/kernel/kernel
boot: _

any ideas to resolved it?
thanks in advance



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