[Bug 224014] ctld: duplicate serials and lun-id

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=224014

            Bug ID: 224014
           Summary: ctld: duplicate serials and lun-id
           Product: Base System
           Version: 11.0-STABLE
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: freebsd-bugs at FreeBSD.org
          Reporter: emz at norma.perm.ru

Env:
====
FreeBSD san.dev.enaza.ru 11.0-STABLE FreeBSD 11.0-STABLE #0 r315957: Wed Nov  1
15:14:39 +05 2017     emz at san.dev.enaza.ru:/usr/obj/usr/src/sys/GENERIC  amd64



ctld is often assigning duplicate serials and lun-id on luns after ctladm
remove has been issued. This leads to confusion on initiators.

I'm not sure if it's a bug from the iSCSI protocol point of view, but from user
side it definitely is.

# ctladm devlist -v
LUN Backend       Size (Blocks)   BS Serial Number    Device ID       
  1 block            6442450944  512 MYSERIAL   1     MYDEVID   1     
      lun_type=0
      num_threads=14
      file=/dev/zvol/dataflash/games-ver5_27-worker01
      ctld_name=iqn.2016-04.net.playkey.iscsi:games-worker01,lun,0
      scsiname=iqn.2016-04.net.playkey.iscsi:games-worker01,lun,0
  2 block            6442450944  512 MYSERIAL   2     MYDEVID   2     
      lun_type=0
      num_threads=14
      file=/dev/zvol/dataflash/games-ver5_27-worker02
      ctld_name=iqn.2016-04.net.playkey.iscsi:games-worker02,lun,0
      scsiname=iqn.2016-04.net.playkey.iscsi:games-worker02,lun,0
  3 block            6442450944  512 MYSERIAL   3     MYDEVID   3     
      lun_type=0
      num_threads=14
      file=/dev/zvol/dataflash/games-ver5_27-worker03
      ctld_name=iqn.2016-04.net.playkey.iscsi:games-worker03,lun,0
      scsiname=iqn.2016-04.net.playkey.iscsi:games-worker03,lun,0
  4 block            6442450944  512 MYSERIAL   4     MYDEVID   4     
      lun_type=0
      num_threads=14
      file=/dev/zvol/dataflash/games-ver5_27-worker04
      ctld_name=iqn.2016-04.net.playkey.iscsi:games-worker04,lun,0
      scsiname=iqn.2016-04.net.playkey.iscsi:games-worker04,lun,0
  5 block            6442450944  512 MYSERIAL   5     MYDEVID   5     
      lun_type=0
      num_threads=14
      file=/dev/zvol/dataflash/games-ver12_2-worker05
      ctld_name=iqn.2016-04.net.playkey.iscsi:games-worker05,lun,0
      scsiname=iqn.2016-04.net.playkey.iscsi:games-worker05,lun,0
  7 block             104857600  512 MYSERIAL   7     MYDEVID   7     
      lun_type=0
      num_threads=14
      scsiname=userdata1
      file=/dev/zvol/data/userdata1
      ctld_name=iqn.2016-04.net.playkey.iscsi:userdata1,lun,0
  8 block             104857600  512 MYSERIAL   8     MYDEVID   8     
      lun_type=0
      num_threads=14
      scsiname=userdata2
      file=/dev/zvol/data/userdata2
      ctld_name=iqn.2016-04.net.playkey.iscsi:userdata2,lun,0
  9 block                  2048  512 MYSERIAL   9     MYDEVID   9     
      lun_type=0
      num_threads=14
      file=/dev/zvol/dataflash/foobar
      ctld_name=iqn.2016-04.net.playkey.iscsi:foobar,lun,0
      scsiname=iqn.2016-04.net.playkey.iscsi:foobar,lun,0
 10 block             104857600  512 MYSERIAL  10     MYDEVID  10     
      lun_type=0
      num_threads=14
      file=/dev/zvol/dataflash/kvm/guest1
      ctld_name=iqn.2016-04.net.playkey.iscsi:guest1,lun,0
      scsiname=iqn.2016-04.net.playkey.iscsi:guest1,lun,0
 11 block             104857600  512 MYSERIAL  11     MYDEVID  11     
      lun_type=0
      num_threads=14
      file=/dev/zvol/dataflash/kvm/guest2
      ctld_name=iqn.2016-04.net.playkey.iscsi:guest2,lun,0
      scsiname=iqn.2016-04.net.playkey.iscsi:guest2,lun,0
 12 block             104857600  512 MYSERIAL  12     MYDEVID  12     
      lun_type=0
      num_threads=14
      file=/dev/zvol/dataflash/kvm/guest3
      ctld_name=iqn.2016-04.net.playkey.iscsi:guest3,lun,0
      scsiname=iqn.2016-04.net.playkey.iscsi:guest3,lun,0
  0 block            6442450944  512 MYSERIAL  11     MYDEVID  11     
      lun_type=0
      num_threads=14
      file=/dev/zvol/dataflash/games
      ctld_name=iqn.2016-04.net.playkey.iscsi:games,lun,0
      scsiname=iqn.2016-04.net.playkey.iscsi:games,lun,0
 15 block             104857600  512 MYSERIAL  12     guest4          
      lun_type=0
      num_threads=14
      file=/dev/zvol/dataflash/kvm/guest4
      ctld_name=iqn.2016-04.net.playkey.iscsi:guest4,lun,0
      scsiname=iqn.2016-04.net.playkey.iscsi:guest4,lun,0

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