Other Two labels for a single partition

Cath O'Deray

Cath O'Deray

 
Below, how can a single partition have two labels?

The unwanted LABEL label/demo appears for da1p1 only after the device (a ZFS cache device) is physically:
  1. disconnected
  2. reconnected without being taken online.
Code: 
root@mowa219-gjp4-zbook-freebsd:~ # geom -t
Geom                       Class      Provider
ada0                       DISK       ada0
  ada0                     DEV       
  ada0                     PART       ada0p1
    ada0p1                 DEV       
    ada0p1                 LABEL      gpt/efiboot0
      gpt/efiboot0         DEV       
    ada0p1                 LABEL      msdosfs/EFISYS
      msdosfs/EFISYS       DEV       
  ada0                     PART       ada0p2
    ada0p2                 DEV       
    ada0p2                 LABEL      gpt/gptboot0
      gpt/gptboot0         DEV       
  ada0                     PART       ada0p3
    ada0p3                 DEV       
    ada0p3.eli             ELI        ada0p3.eli
      ada0p3.eli           DEV       
      swap                 SWAP     
  ada0                     PART       ada0p4
    ada0p4                 DEV       
    ada0p4.eli             ELI        ada0p4.eli
      ada0p4.eli           DEV       
      zfs::vdev            ZFS::VDEV
cd0                        DISK       cd0
  cd0                      DEV       
da1                        DISK       da1
  da1                      DEV       
  da1                      PART       da1p1
    da1p1                  DEV       
    da1p1                  LABEL      gpt/cache-copperbowl
      gpt/cache-copperbowl DEV       
      zfs::vdev            ZFS::VDEV
da0                        DISK       da0
  da0                      DEV       
  da0                      PART       da0p1
    da0p1                  DEV       
    da0p1                  LABEL      gpt/cache-transcend
      gpt/cache-transcend  DEV       
      zfs::vdev            ZFS::VDEV
da2                        DISK       da2
  da2                      DEV       
  da2                      PART       da2p1
    da2p1                  DEV       
    da2p1                  LABEL      gpt/Transcend
      gpt/Transcend        DEV       
      zfs::vdev            ZFS::VDEV
root@mowa219-gjp4-zbook-freebsd:~ # zpool offline copperbowl gpt/cache-copperbowl
root@mowa219-gjp4-zbook-freebsd:~ # zpool offline Transcend gpt/cache-transcend
root@mowa219-gjp4-zbook-freebsd:~ # geom -t
Geom                       Class      Provider
ada0                       DISK       ada0
  ada0                     DEV       
  ada0                     PART       ada0p1
    ada0p1                 DEV       
    ada0p1                 LABEL      gpt/efiboot0
      gpt/efiboot0         DEV       
    ada0p1                 LABEL      msdosfs/EFISYS
      msdosfs/EFISYS       DEV       
  ada0                     PART       ada0p2
    ada0p2                 DEV       
    ada0p2                 LABEL      gpt/gptboot0
      gpt/gptboot0         DEV       
  ada0                     PART       ada0p3
    ada0p3                 DEV       
    ada0p3.eli             ELI        ada0p3.eli
      ada0p3.eli           DEV       
      swap                 SWAP     
  ada0                     PART       ada0p4
    ada0p4                 DEV       
    ada0p4.eli             ELI        ada0p4.eli
      ada0p4.eli           DEV       
      zfs::vdev            ZFS::VDEV
cd0                        DISK       cd0
  cd0                      DEV       
da1                        DISK       da1
  da1                      DEV       
  da1                      PART       da1p1
    da1p1                  DEV       
    da1p1                  LABEL      gpt/cache-copperbowl
      gpt/cache-copperbowl DEV       
da0                        DISK       da0
  da0                      DEV       
  da0                      PART       da0p1
    da0p1                  DEV       
    da0p1                  LABEL      gpt/cache-transcend
      gpt/cache-transcend  DEV       
da2                        DISK       da2
  da2                      DEV       
  da2                      PART       da2p1
    da2p1                  DEV       
    da2p1                  LABEL      gpt/Transcend
      gpt/Transcend        DEV       
      zfs::vdev            ZFS::VDEV
root@mowa219-gjp4-zbook-freebsd:~ # tail -f -n 0 /var/log/messages
Aug  9 07:58:55 mowa219-gjp4-zbook-freebsd kernel: ugen0.10: <Kingston DataTraveler 3.0> at usbus0 (disconnected)
Aug  9 07:58:55 mowa219-gjp4-zbook-freebsd kernel: umass0: at uhub8, port 4, addr 12 (disconnected)
Aug  9 07:58:55 mowa219-gjp4-zbook-freebsd kernel: da0 at umass-sim0 bus 0 scbus5 target 0 lun 0
Aug  9 07:58:55 mowa219-gjp4-zbook-freebsd kernel: da0: <Kingston DataTraveler 3.0 1.00>  s/n 60A44C3FACC93110B9970045 detached
Aug  9 07:58:55 mowa219-gjp4-zbook-freebsd kernel: (da0:umass-sim0:0:0:0): Periph destroyed
Aug  9 07:58:55 mowa219-gjp4-zbook-freebsd kernel: umass0: detached
Aug  9 07:58:58 mowa219-gjp4-zbook-freebsd kernel: ugen0.11: <Kingston DataTraveler 3.0> at usbus0 (disconnected)
Aug  9 07:58:58 mowa219-gjp4-zbook-freebsd kernel: umass1: at uhub0, port 21, addr 10 (disconnected)
Aug  9 07:58:58 mowa219-gjp4-zbook-freebsd kernel: da1 at umass-sim1 bus 1 scbus6 target 0 lun 0
Aug  9 07:58:58 mowa219-gjp4-zbook-freebsd kernel: da1: <Kingston DataTraveler 3.0 PMAP>  s/n C860008AE288BF4189030BBD detached
Aug  9 07:58:58 mowa219-gjp4-zbook-freebsd kernel: (da1:umass-sim1:1:0:0): Periph destroyed
Aug  9 07:58:58 mowa219-gjp4-zbook-freebsd kernel: umass1: detached
Aug  9 07:59:02 mowa219-gjp4-zbook-freebsd kernel: ugen0.10: <Kingston DataTraveler 3.0> at usbus0
Aug  9 07:59:02 mowa219-gjp4-zbook-freebsd kernel: umass0 on uhub0
Aug  9 07:59:02 mowa219-gjp4-zbook-freebsd kernel: umass0: <Kingston DataTraveler 3.0, class 0/0, rev 3.00/1.00, addr 14> on usbus0
Aug  9 07:59:02 mowa219-gjp4-zbook-freebsd kernel: da0 at umass-sim0 bus 0 scbus5 target 0 lun 0
Aug  9 07:59:02 mowa219-gjp4-zbook-freebsd kernel: da0: <Kingston DataTraveler 3.0 PMAP> Removable Direct Access SPC-4 SCSI device
Aug  9 07:59:02 mowa219-gjp4-zbook-freebsd kernel: da0: Serial Number C860008AE288BF4189030BBD
Aug  9 07:59:02 mowa219-gjp4-zbook-freebsd kernel: da0: 400.000MB/s transfers
Aug  9 07:59:02 mowa219-gjp4-zbook-freebsd kernel: da0: 30016MB (61472768 512 byte sectors)
Aug  9 07:59:02 mowa219-gjp4-zbook-freebsd kernel: da0: quirks=0x2<NO_6_BYTE>
Aug  9 07:59:10 mowa219-gjp4-zbook-freebsd kernel: ugen0.11: <Kingston DataTraveler 3.0> at usbus0
Aug  9 07:59:10 mowa219-gjp4-zbook-freebsd kernel: umass1 on uhub8
Aug  9 07:59:10 mowa219-gjp4-zbook-freebsd kernel: umass1: <Kingston DataTraveler 3.0, class 0/0, rev 3.10/11.76, addr 15> on usbus0
Aug  9 07:59:10 mowa219-gjp4-zbook-freebsd kernel: da1 at umass-sim1 bus 1 scbus6 target 0 lun 0
Aug  9 07:59:10 mowa219-gjp4-zbook-freebsd kernel: da1: <Kingston DataTraveler 3.0 1.00> Removable Direct Access SPC-4 SCSI device
Aug  9 07:59:10 mowa219-gjp4-zbook-freebsd kernel: da1: Serial Number 60A44C3FACC93110B9970045
Aug  9 07:59:10 mowa219-gjp4-zbook-freebsd kernel: da1: 400.000MB/s transfers
Aug  9 07:59:10 mowa219-gjp4-zbook-freebsd kernel: da1: 14800MB (30310400 512 byte sectors)
Aug  9 07:59:10 mowa219-gjp4-zbook-freebsd kernel: da1: quirks=0x2<NO_6_BYTE>
^C
root@mowa219-gjp4-zbook-freebsd:~ # geom -t
Geom                       Class      Provider
ada0                       DISK       ada0
  ada0                     DEV       
  ada0                     PART       ada0p1
    ada0p1                 DEV       
    ada0p1                 LABEL      gpt/efiboot0
      gpt/efiboot0         DEV       
    ada0p1                 LABEL      msdosfs/EFISYS
      msdosfs/EFISYS       DEV       
  ada0                     PART       ada0p2
    ada0p2                 DEV       
    ada0p2                 LABEL      gpt/gptboot0
      gpt/gptboot0         DEV       
  ada0                     PART       ada0p3
    ada0p3                 DEV       
    ada0p3.eli             ELI        ada0p3.eli
      ada0p3.eli           DEV       
      swap                 SWAP     
  ada0                     PART       ada0p4
    ada0p4                 DEV       
    ada0p4.eli             ELI        ada0p4.eli
      ada0p4.eli           DEV       
      zfs::vdev            ZFS::VDEV
cd0                        DISK       cd0
  cd0                      DEV       
da2                        DISK       da2
  da2                      DEV       
  da2                      PART       da2p1
    da2p1                  DEV       
    da2p1                  LABEL      gpt/Transcend
      gpt/Transcend        DEV       
      zfs::vdev            ZFS::VDEV
da0                        DISK       da0
  da0                      DEV       
  da0                      PART       da0p1
    da0p1                  DEV       
    da0p1                  LABEL      gpt/cache-copperbowl
      gpt/cache-copperbowl DEV       
da1                        DISK       da1
  da1                      DEV       
  da1                      PART       da1p1
    da1p1                  DEV       
    da1p1                  LABEL      gpt/cache-transcend
      gpt/cache-transcend  DEV       
    da1p1                  LABEL      label/demo
      label/demo           DEV       
root@mowa219-gjp4-zbook-freebsd:~ # lsblk
DEVICE         MAJ:MIN SIZE TYPE                                          LABEL MOUNT
ada0             0:127 466G GPT                                               - -
  ada0p1         0:129 200M efi                                    gpt/efiboot0 -
  ada0p2         0:131 512K freebsd-boot                           gpt/gptboot0 -
  <FREE>         -:-   492K -                                                 - -
  ada0p3         0:133  16G freebsd-swap                              gpt/swap0 SWAP
  ada0p3.eli     1:32   16G freebsd-swap                                      - SWAP
  ada0p4         0:135 450G freebsd-zfs                                gpt/zfs0 <ZFS>
  ada0p4.eli     0:146 450G zfs                                               - -
  <FREE>         -:-   4.0K -                                                 - -
cd0              0:137   0B -                                                 - -
da0              1:60   29G GPT                                               - -
  <FREE>         -:-   1.0M -                                                 - -
  da0p1          1:61   29G freebsd-zfs                    gpt/cache-copperbowl <ZFS>
da1              1:76   14G GPT                                               - -
  <FREE>         -:-   1.0M -                                                 - -
  da1p1          1:77   14G freebsd-zfs                     gpt/cache-transcend <ZFS>
da2              1:71  466G GPT                                               - -
  <FREE>         -:-   1.0M -                                                 - -
  da2p1          1:72  466G freebsd-zfs                           gpt/Transcend <ZFS>
root@mowa219-gjp4-zbook-freebsd:~ #
 
maybe geom withering? depending on some sysctls that control visible labels, you can have a bunch of different labels for a
single device. They are all visible initially, until something claims exclusive use (mounting is exclusive use).
da1p1 looks like it has a few labels that can be used to mount:
/dev/da1p1
/dev/gpt/cache-transcend
/dev/label/demo

If you use /dev/da1p1 to specify it's role as ZFS cache, the others "disappear".
If you use /dev/label/demo, the others disappear
ditto for /dev/gpt/cache-transcend

output of
glabel list da1p1
gpart show -l da1p1

I don't know where lsblk is pulling "labels" from.
What you can do is:
sysctl -a | grep -i kern.geom.label look for values of things "enabled".

da1 offline, not plugged in, ls -ltr /dev pay attention to any directories.
da1 plugged in, offline, ls -ltr /dev again pay attention to directories and look for new entries in /dev/gpt /dev/diskid /dev/label
 
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