ZFS does not correctly import by label

[Ben RUBSON]

Hello,

Sounds like ZFS does not correctly import cache and spares by label.

Example :

# zpool add home cache label/G12000KU2RVJAch
# zpool add home spare label/G1207PFGPTKDXhm 
# zpool status home
  (...)
  home                       ONLINE       0     0     0
    mirror-0                 ONLINE       0     0     0
      label/G1203PGGLJWZXhm  ONLINE       0     0     0
      label/G1204PHKXHJ2Xhm  ONLINE       0     0     0
  (...)
  logs
    mirror-2                 ONLINE       0     0     0
      label/G12000KU2RVJAlg  ONLINE       0     0     0
      label/G12010KU22RVAlg  ONLINE       0     0     0
  (...)
  cache
    label/G12000KU2RVJAch    ONLINE       0     0     0
  spares
    label/G1207PFGPTKDXhm    AVAIL

# zpool export home
# zpool import -d /dev/label/ home
# zpool status home
  (...)
  home                       ONLINE       0     0     0
    mirror-0                 ONLINE       0     0     0
      label/G1203PGGLJWZXhm  ONLINE       0     0     0
      label/G1204PHKXHJ2Xhm  ONLINE       0     0     0
  (...)
  logs
    mirror-2                 ONLINE       0     0     0
      label/G12000KU2RVJAlg  ONLINE       0     0     0
      label/G12010KU22RVAlg  ONLINE       0     0     0
  (...)
  cache
    da5p7                    ONLINE       0     0     0
  spares
    da4p1                    AVAIL

# uname -v
FreeBSD 10.3-RELEASE-p7 #0: Thu Aug 11 18:38:15 UTC 2016     root at amd64-builder.daemonology.net:/usr/obj/usr/src/sys/GENERIC 

Did I miss something ?

Thank you very much !

Best regards,

Ben