Hi Matthew,

You can use various forms of fmdump to decode this output.
It might be easier to use fmdump -eV and look for the
device info in the vdev path entry, like the one below.

Also see if the errors on these vdevs are reported in
your zpool status output.

Thanks,

Cindy

# fmdump -eV | more
TIME                           CLASS
Oct 14 2009 09:56:54.639354792 ereport.fs.zfs.vdev.open_failed
nvlist version: 0
        class = ereport.fs.zfs.vdev.open_failed
        ena = 0xd9fa6d282c00001
        detector = (embedded nvlist)
        nvlist version: 0
                version = 0x0
                scheme = zfs
                pool = 0xacea55024964f6d6
                vdev = 0xf04f53d61ed76317
        (end detector)

        pool = mirpool
        pool_guid = 0xacea55024964f6d6
        pool_context = 0
        pool_failmode = wait
        vdev_guid = 0xf04f53d61ed76317
        vdev_type = disk
        vdev_path = /dev/dsk/c1t226000C0FFA001ABd3s0
        vdev_devid = id1,s...@n600c0ff0000000000001ab23c5606e03/a
        parent_guid = 0x6035386f7936f350




On 10/21/09 10:18, Matthew C Aycock wrote:
I have several of these messages from fmdump:

 fmdump -v -u 98abae95-8053-4cdc-d91a-dad89b125db4                ~
TIME                 UUID                                 SUNW-MSG-ID
Sep 18 00:45:23.7621 98abae95-8053-4cdc-d91a-dad89b125db4 ZFS-8000-FD
  100%  fault.fs.zfs.vdev.io

        Problem in: zfs://pool=mzfs/vdev=a414878cf09644a
           Affects: zfs://pool=mzfs/vdev=a414878cf09644a
               FRU: -
          Location: -

Oct 21 10:34:41.8014 98abae95-8053-4cdc-d91a-dad89b125db4 FMD-8000-4M Repaired
  100%  fault.fs.zfs.vdev.io

        Problem in: zfs://pool=mzfs/vdev=a414878cf09644a
           Affects: zfs://pool=mzfs/vdev=a414878cf09644a
               FRU: -
          Location: -

I am trying to determine which of the four vdevs is involved. Hdow do I 
translate vdev=a414878cf09644a a cWtXdYsZ?
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