harmless zfs warnings?

[Daniel Braniss]

I asked this on stable, and since there were no takers, trying my luck here.

I see these messages:
ZFS WARNING: Unable to attach to gpt/r0/swap.
ZFS WARNING: Unable to attach to mfid0p3.

I have 2 'disks' /dev/label/r0 and /dev/label/r5,
the r0 is gparted such:
=>        34  1952448445  mfid0  GPT  (931G)
          34         128      1  freebsd-boot  (64K)
         162     4194304      2  freebsd-ufs  (2.0G)
     4194466   100663296      3  freebsd-swap  (48G)
   104857762  1847590717      4  freebsd-zfs  (881G)

when doing zpool import [z and or h] all is ok, except for
the above WARNINGs, are they harmless?

thanks,
	danny