[Bug 1549456] Re: multipath discovery failed during install due to missing udev properties defined by sg3-utils udev rules

Mathieu Trudel-Lapierre mathieu.tl at gmail.com
Mon Mar 14 16:01:33 UTC 2016 

** Changed in: hw-detect (Ubuntu)
       Status: New => Triaged

** Changed in: hw-detect (Ubuntu)
     Assignee: (unassigned) => Mathieu Trudel-Lapierre (mathieu-tl)

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Title:
  multipath discovery failed during install due to missing udev
  properties defined by sg3-utils udev rules

Status in hw-detect package in Ubuntu:
  Triaged

Bug description:
  During a Xenial installation, the multipath devices from an IBM IPR
  controller were not discovered, as the block devices lacked the
  SCSI_IDENT_* udev properties.

  The fix was to simply reload udev rules and re-add the devices w/
  update-dev; and the devices were correctly multipathed.

  Adding a patch to do that in /bin/disk-detect.

  ~ # multipath -l
  ~ #

  ~ # multipath -v3
  Feb 22 13:38:33 | libdevmapper version 1.02.110 (2015-10-30)
  Feb 22 13:38:33 | DM multipath kernel driver v1.10.0
  Feb 22 13:38:33 | loading /lib/multipath/libcheckdirectio.so checker
  Feb 22 13:38:33 | loading /lib/multipath/libprioconst.so prioritizer
  Feb 22 13:38:33 | sda: blacklisted, udev property missing
  Feb 22 13:38:33 | sdb: blacklisted, udev property missing
  Feb 22 13:38:33 | sdc: blacklisted, udev property missing
  Feb 22 13:38:33 | sdd: blacklisted, udev property missing
  Feb 22 13:38:33 | sde: blacklisted, udev property missing
  Feb 22 13:38:33 | sdf: blacklisted, udev property missing
  Feb 22 13:38:33 | sdg: blacklisted, udev property missing
  Feb 22 13:38:33 | sr0: blacklisted, udev property missing
  Feb 22 13:38:33 | sdh: blacklisted, udev property missing
  Feb 22 13:38:33 | sdi: blacklisted, udev property missing
  Feb 22 13:38:33 | sdj: blacklisted, udev property missing
  Feb 22 13:38:33 | sdk: blacklisted, udev property missing
  Feb 22 13:38:33 | sdl: blacklisted, udev property missing
  Feb 22 13:38:33 | sdm: blacklisted, udev property missing
  Feb 22 13:38:33 | sdn: blacklisted, udev property missing
  <...>
  ===== no paths =====
  <...>

  ~ # udevadm info -q all /dev/sda
  P: /devices/pci0001:00/0001:00:00.0/0001:01:00.0/0001:02:08.0/0001:08:00.0/host0/target0:2:0/0:2:0:0/block/sda
  N: sda
  S: disk/by-id/scsi-1IBM_IPR-10_5ED5AD0000000020
  S: disk/by-path/pci-0001:08:00.0-scsi-0:2:0:0
  E: DEVLINKS=/dev/disk/by-path/pci-0001:08:00.0-scsi-0:2:0:0 /dev/disk/by-id/scsi-1IBM_IPR-10_5ED5AD0000000020
  E: DEVNAME=/dev/sda
  E: DEVPATH=/devices/pci0001:00/0001:00:00.0/0001:01:00.0/0001:02:08.0/0001:08:00.0/host0/target0:2:0/0:2:0:0/block/sda
  E: DEVTYPE=disk
  E: ID_BUS=scsi
  E: ID_MODEL=IPR-10_5ED5AD00
  E: ID_MODEL_ENC=IPR-10\x20\x205ED5AD00
  E: ID_PART_TABLE_TYPE=gpt
  E: ID_PART_TABLE_UUID=dfd65ab5-bba4-4785-87d5-c7477a296e9e
  E: ID_PATH=pci-0001:08:00.0-scsi-0:2:0:0
  E: ID_PATH_TAG=pci-0001_08_00_0-scsi-0_2_0_0
  E: ID_SCSI=1
  E: ID_SERIAL=1IBM_IPR-10_5ED5AD0000000020
  E: ID_SERIAL_SHORT=IBM_IPR-10_5ED5AD0000000020
  E: ID_TARGET_PORT=d5ad
  E: ID_TYPE=disk
  E: ID_VENDOR=IBM
  E: ID_VENDOR_ENC=IBM\x20\x20\x20\x20\x20
  E: MAJOR=8
  E: MINOR=0
  E: SUBSYSTEM=block
  E: USEC_INITIALIZED=148820631

  ~ # udevadm control --reload
  ~ # /bin/update-dev 

  ~ # udevadm info -q property /dev/sda
  DEVLINKS=/dev/disk/by-id/scsi-1IBM_IPR-10_5ED5AD0000000020 /dev/disk/by-path/pci-0001:08:00.0-scsi-0:2:0:0
  DEVNAME=/dev/sda
  DEVPATH=/devices/pci0001:00/0001:00:00.0/0001:01:00.0/0001:02:08.0/0001:08:00.0/host0/target0:2:0/0:2:0:0/block/sda
  DEVTYPE=disk
  ID_BUS=scsi
  ID_MODEL=IPR-10_5ED5AD00
  ID_MODEL_ENC=IPR-10\x20\x205ED5AD00
  ID_PART_TABLE_TYPE=gpt
  ID_PART_TABLE_UUID=dfd65ab5-bba4-4785-87d5-c7477a296e9e
  ID_PATH=pci-0001:08:00.0-scsi-0:2:0:0
  ID_PATH_TAG=pci-0001_08_00_0-scsi-0_2_0_0
  ID_SCSI=1
  ID_SERIAL=1IBM_IPR-10_5ED5AD0000000020
  ID_SERIAL_SHORT=IBM_IPR-10_5ED5AD0000000020
  ID_TYPE=disk
  ID_VENDOR=IBM
  ID_VENDOR_ENC=IBM\x20\x20\x20\x20\x20
  MAJOR=8
  MINOR=0
  SCSI_IDENT_LUN_T10=IBM_IPR-10_5ED5AD0000000020
  SCSI_IDENT_LUN_VENDOR=0
  SCSI_IDENT_PORT_RELATIVE=54701
  SCSI_IDENT_PORT_TARGET_PORT_GROUP=0xd5ad
  SCSI_MODEL=IPR-10_5ED5AD00
  SCSI_MODEL_ENC=IPR-10\x20\x205ED5AD00
  SCSI_TPGS=1
  SCSI_TYPE=disk
  SCSI_VENDOR=IBM
  SCSI_VENDOR_ENC=IBM\x20\x20\x20\x20\x20
  SUBSYSTEM=block
  USEC_INITIALIZED=400476526

  ~ # multipath -v3
  Feb 22 14:45:07 | sda: udev property SCSI_IDENT_LUN_T10 whitelisted
  <...>
  ===== paths list =====
  uuid                         hcil    dev dev_t pri dm_st chk_st vend/prod/rev 
  1IBM_IPR-10_5ED5AD0000000020 0:2:0:0 sda 8:0   50  undef ready  IBM,IPR-10  5E
  1IBM_IPR-0_5ED5930000000040  0:2:1:0 sdb 8:16  50  undef ready  IBM,IPR-0   5E
  1IBM_IPR-0_5ED5930000000020  0:2:2:0 sdc 8:32  50  undef ready  IBM,IPR-0   5E
  1IBM_IPR-0_5ED5930000000100  0:2:3:0 sdd 8:48  50  undef ready  IBM,IPR-0   5E
  1IBM_IPR-0_5ED59300000000E0  0:2:4:0 sde 8:64  50  undef ready  IBM,IPR-0   5E
  1IBM_IPR-0_5ED59300000000C0  0:2:5:0 sdf 8:80  50  undef ready  IBM,IPR-0   5E
  1IBM_IPR-0_5ED59300000000A0  0:2:6:0 sdg 8:96  50  undef ready  IBM,IPR-0   5E
  1IBM_IPR-10_5ED5AD0000000020 1:2:0:0 sdh 8:112 10  undef ready  IBM,IPR-10  5E
  1IBM_IPR-0_5ED5930000000040  1:2:1:0 sdi 8:128 10  undef ready  IBM,IPR-0   5E
  1IBM_IPR-0_5ED5930000000020  1:2:2:0 sdj 8:144 10  undef ready  IBM,IPR-0   5E
  1IBM_IPR-0_5ED5930000000100  1:2:3:0 sdk 8:160 10  undef ready  IBM,IPR-0   5E
  1IBM_IPR-0_5ED59300000000E0  1:2:4:0 sdl 8:176 10  undef ready  IBM,IPR-0   5E
  1IBM_IPR-0_5ED59300000000C0  1:2:5:0 sdm 8:192 10  undef ready  IBM,IPR-0   5E
  1IBM_IPR-0_5ED59300000000A0  1:2:6:0 sdn 8:208 10  undef ready  IBM,IPR-0   5E
  <...>

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