ZFS Pool import strange (cosmetic) issue


Famous Member
Oct 13, 2017
Hello everybody,

I have a very strange situation here that has shown up after a reboot.
My one ZPOOL imports with WWN, SDx and VDEV at once.

It has worked different (always showing / using VDEVs) for a long time, but changed at some unknown point in time.
Since I have quite a few disks in my system I would like to get the old behavior back but seem unable to do so. Tried forcing usage of VDEVs by adjusting /etc/defaults/zfs but it did not work.

Please have a look to the Spare and Cache devices.
All others have transitioned to the WWN-representation.

  pool: HDD-POOL
 state: ONLINE
  scan: scrub repaired 0B in 7h51m with 0 errors on Sun Jun 16 07:51:34 2019

    NAME                              STATE     READ WRITE CKSUM
    HDD-POOL                          ONLINE       0     0     0
      mirror-0                        ONLINE       0     0     0
        wwn-0x50014ee2064c0407        ONLINE       0     0     0
        wwn-0x50014ee25ba11386        ONLINE       0     0     0
      mirror-1                        ONLINE       0     0     0
        wwn-0x50014ee25ba14733        ONLINE       0     0     0
        wwn-0x50014ee25ba15612        ONLINE       0     0     0
      mirror-2                        ONLINE       0     0     0
        wwn-0x50014ee601d8038e        ONLINE       0     0     0
        wwn-0x50014ee2064c0078        ONLINE       0     0     0
      mirror-3                        ONLINE       0     0     0
        wwn-0x50014ee603bb9256        ONLINE       0     0     0
        wwn-0x50014ee20617bbac        ONLINE       0     0     0
      mirror-4                        ONLINE       0     0     0
        wwn-0x50014ee659150891        ONLINE       0     0     0
        wwn-0x50014ee65946b0ae        ONLINE       0     0     0
      mirror-5                        ONLINE       0     0     0
        wwn-0x50026b777504193f-part3  ONLINE       0     0     0
        wwn-0x5002538043584d30-part3  ONLINE       0     0     0
      sdd2                            ONLINE       0     0     0
      sdl2                            ONLINE       0     0     0
      C0-S5_HDD_WDWX81A6357403        AVAIL   

errors: No known data errors

  pool: SSD-POOL
 state: ONLINE
  scan: scrub repaired 0B in 0h8m with 0 errors on Sun Jun 16 00:08:11 2019

    NAME                              STATE     READ WRITE CKSUM
    SSD-POOL                          ONLINE       0     0     0
      mirror-0                        ONLINE       0     0     0
        wwn-0x50026b777504193f-part1  ONLINE       0     0     0
        wwn-0x5002538043584d30-part1  ONLINE       0     0     0
      wwn-0x50014ee603bfb028          AVAIL   

errors: No known data errors

Has anyone experienced this before? And some helpful ideas?
The VDEVs are populated ok:

C0-S0_HDD_WDWXC1A81V2678          C1-S1_HDD_WDWXH1E61JDZE4-part1
C0-S0_HDD_WDWXC1A81V2678-part1    C1-S1_HDD_WDWXH1E61JDZE4-part9
C0-S0_HDD_WDWXC1A81V2678-part9    C1-S2_HDD_WDWXC1A81V1322
C0-S1_HDD_WDWXH1E61JDWK1          C1-S2_HDD_WDWXC1A81V1322-part1
C0-S1_HDD_WDWXH1E61JDWK1-part1    C1-S2_HDD_WDWXC1A81V1322-part9
C0-S1_HDD_WDWXH1E61JDWK1-part9    C1-S3_HDD_WDWXD1A61R5612
C0-S2_HDD_WDWXF1E61YHW25          C1-S3_HDD_WDWXD1A61R5612-part1
C0-S2_HDD_WDWXF1E61YHW25-part1    C1-S3_HDD_WDWXD1A61R5612-part9
C0-S2_HDD_WDWXF1E61YHW25-part9    C1-S4_HDD_WDWX11E83LT139
C0-S3_HDD_WDWXH1E61JDTX8          C1-S4_HDD_WDWX11E83LT139-part1
C0-S3_HDD_WDWXH1E61JDTX8-part1    C1-S4_HDD_WDWX11E83LT139-part9
C0-S3_HDD_WDWXH1E61JDTX8-part9    C1-S5_HDD_WDWX91A53F3930
C0-S4_HDD_WDWX71A63V2718          C1-S5_HDD_WDWX91A53F3930-part1
C0-S4_HDD_WDWX71A63V2718-part1    C1-S5_HDD_WDWX91A53F3930-part9
C0-S4_HDD_WDWX71A63V2718-part9    C1-S7_SSD_S0Z4NEAC916520
C0-S5_HDD_WDWX81A6357403          C1-S7_SSD_S0Z4NEAC916520-part1
C0-S5_HDD_WDWX81A6357403-part1    C1-S7_SSD_S0Z4NEAC916520-part2
C0-S5_HDD_WDWX81A6357403-part9    C1-S7_SSD_S0Z4NEAC916520-part3
C0-S7_SSD_50026B777504193F        O-P0_HDD_WDWX40AB9K7989
C0-S7_SSD_50026B777504193F-part1  O-P2_HDD_WDWXD1E33SXHH4
C0-S7_SSD_50026B777504193F-part2  O-P2_HDD_WDWXD1E33SXHH4-part1
C0-S7_SSD_50026B777504193F-part3  O-P2_HDD_WDWXD1E33SXHH4-part9
C1-S0_HDD_WDWXC1A81V2876          O-P3_HDD_WDWX91A6387047
C1-S0_HDD_WDWXC1A81V2876-part1    O-P3_HDD_WDWX91A6387047-part1
C1-S0_HDD_WDWXC1A81V2876-part9    O-P3_HDD_WDWX91A6387047-part9

I am running the most up to date Proxmox version with patchlevel as of today.
Issue appeared a few weeks back but I did ignore it for some time...
With best regards and many thanks in advance



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