spa_tryimport: importing tank
spa_load($import, config trusted): LOADING
disk vdev '/dev/dsk/c4t0d0s0': best uberblock found for spa $import. txg 25
spa_load($import, config untrusted): using uberblock with txg=25
vdev_copy_path: vdev 12993471900433906316: path changed from '/dev/sdb1' to '/dev/dsk/c4t0d0s0'
disk vdev '/dev/dsk/c4t0d0s0': vdev_disk_open: invalid vdev_devid 'usb-General_UDisk-0:0-part1'
spa_load($import, config trusted): vdev tree has 1 missing top-level vdevs.
spa_load($import, config trusted): current settings allow for maximum 0 missing top-level vdevs at this stage.
spa_load($import, config trusted): FAILED: unable to open vdev tree [error=22]
  vdev 0: root, guid: 12532671463085098100, path: N/A, can't open
    vdev 0: disk, guid: 12993471900433906316, path: /dev/dsk/c4t0d0s0, can't open
spa_load($import, config trusted): UNLOADING
spa_import: importing tank
spa_load(tank, config trusted): LOADING
disk vdev '/dev/dsk/c4t0d0s0': vdev_disk_open: invalid vdev_devid 'usb-General_UDisk-0:0-part1'
spa_load(tank, config untrusted): vdev tree has 1 missing top-level vdevs.
spa_load(tank, config untrusted): current settings allow for maximum 0 missing top-level vdevs at this stage.
spa_load(tank, config untrusted): FAILED: unable to open vdev tree [error=22]
  vdev 0: root, guid: 12532671463085098100, path: N/A, can't open
    vdev 0: disk, guid: 12993471900433906316, path: /dev/dsk/c4t0d0s0, can't open
spa_load(tank, config untrusted): UNLOADING