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[Bug 1425773] Re: multipath command not showing boot disk information

 

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https://bugs.launchpad.net/bugs/1425773

Title:
  multipath command not showing boot disk information

Status in linux package in Ubuntu:
  New

Bug description:
  == Comment: #0 - GIRISH SHRIGIRI <gshrigir@xxxxxxxxxx> - 2015-02-18 05:57:13 ==
  multipath -ll command not showing proper boot disk .
  i have assigned 60G ds8k SAN disk and rest IO Disk of sizes 20G and 10G  from ds8k and XIV.

  lsblk and lsscsi -s shows proper boot disk name ( sdq )

  but multipath -ll shows wrong result and also shows wrong size (
  showing 20G )

  please have a look into it .

  root@zop01:/# multipath -ll
  mpath2 (200173800277f06f5) dm-4 IBM,2810XIV
  size=16G features='0' hwhandler='0' wp=rw
  |-+- policy='round-robin 0' prio=1 status=active
  | `- 2:0:6:2          sdj  8:144  active ready running
  |-+- policy='round-robin 0' prio=1 status=enabled
  | `- 2:0:7:2          sdn  8:208  active ready running
  |-+- policy='round-robin 0' prio=1 status=enabled
  | `- 3:0:6:2          sdz  65:144 active ready running
  `-+- policy='round-robin 0' prio=1 status=enabled
    `- 3:0:7:2          sdad 65:208 active ready running
  mpath1 (200173800277f06f7) dm-6 IBM,2810XIV
  size=16G features='0' hwhandler='0' wp=rw
  |-+- policy='round-robin 0' prio=1 status=active
  | `- 2:0:6:4          sdl  8:176  active ready running
  |-+- policy='round-robin 0' prio=1 status=enabled
  | `- 2:0:7:4          sdp  8:240  active ready running
  |-+- policy='round-robin 0' prio=1 status=enabled
  | `- 3:0:6:4          sdab 65:176 active ready running
  `-+- policy='round-robin 0' prio=1 status=enabled
    `- 3:0:7:4          sdaf 65:240 active ready running
  mpath0 (200173800277f06f4) dm-3 IBM,2810XIV
  size=16G features='0' hwhandler='0' wp=rw
  |-+- policy='round-robin 0' prio=1 status=active
  | `- 2:0:6:1          sdi  8:128  active ready running
  |-+- policy='round-robin 0' prio=1 status=enabled
  | `- 2:0:7:1          sdm  8:192  active ready running
  |-+- policy='round-robin 0' prio=1 status=enabled
  | `- 3:0:6:1          sdy  65:128 active ready running
  `-+- policy='round-robin 0' prio=1 status=enabled
    `- 3:0:7:1          sdac 65:192 active ready running
  mpath9 (200173800277f06f0) dm-7 IBM,2810XIV
  size=16G features='0' hwhandler='0' wp=rw
  |-+- policy='round-robin 0' prio=1 status=active
  | `- 4:0:2:1          sdag 66:0   active ready running
  |-+- policy='round-robin 0' prio=1 status=enabled
  | `- 4:0:4:1          sdan 66:112 active ready running
  |-+- policy='round-robin 0' prio=1 status=enabled
  | `- 5:0:2:1          sdar 66:176 active ready running
  `-+- policy='round-robin 0' prio=1 status=enabled
    `- 5:0:4:1          sday 67:32  active ready running
  mpath8 (200173800277f06f3) dm-10 IBM,2810XIV
  size=16G features='0' hwhandler='0' wp=rw
  |-+- policy='round-robin 0' prio=1 status=active
  | `- 4:0:2:4          sdaj 66:48  active ready running
  |-+- policy='round-robin 0' prio=1 status=enabled
  | `- 5:0:4:4          sdbb 67:80  active ready running
  |-+- policy='round-robin 0' prio=1 status=enabled
  | `- 4:0:4:4          sdaq 66:160 active ready running
  `-+- policy='round-robin 0' prio=1 status=enabled
    `- 5:0:2:4          sdau 66:224 active ready running
  mpath14 (36005076309ffc2f00000000000000331) dm-13 IBM,2107900
  size=20G features='1 queue_if_no_path' hwhandler='0' wp=rw
  `-+- policy='round-robin 0' prio=1 status=active
    |- 4:0:3:1076969475 sdam 66:96  active ready running
    `- 5:0:3:1076969475 sdax 67:16  active ready running
  mpath13 (36005076309ffc2f00000000000000330) dm-12 IBM,2107900
  size=20G features='1 queue_if_no_path' hwhandler='0' wp=rw
  `-+- policy='round-robin 0' prio=1 status=active
    |- 4:0:3:1076903939 sdal 66:80  active ready running
    `- 5:0:3:1076903939 sdaw 67:0   active ready running
  mpath6 (36005076309ffc2f0000000000000032e) dm-2 IBM,2107900
  size=20G features='1 queue_if_no_path' hwhandler='0' wp=rw
  `-+- policy='round-robin 0' prio=1 status=active
    |- 2:0:0:1076772867 sdd  8:48   active ready running
    |- 2:0:1:1076772867 sdh  8:112  active ready running
    |- 3:0:0:1076772867 sdt  65:48  active ready running
    `- 3:0:1:1076772867 sdx  65:112 active ready running
  mpath12 (36005076309ffc2f0000000000000032f) dm-11 IBM,2107900
  size=20G features='1 queue_if_no_path' hwhandler='0' wp=rw
  `-+- policy='round-robin 0' prio=1 status=active
    |- 4:0:3:1076838403 sdak 66:64  active ready running
    `- 5:0:3:1076838403 sdav 66:240 active ready running
  mpath5 (36005076309ffc2f0000000000000032d) dm-1 IBM,2107900
  size=20G features='1 queue_if_no_path' hwhandler='0' wp=rw
  `-+- policy='round-robin 0' prio=1 status=active
    |- 2:0:0:1076707331 sdc  8:32   active ready running
    |- 2:0:1:1076707331 sdg  8:96   active ready running
    |- 3:0:0:1076707331 sds  65:32  active ready running
    `- 3:0:1:1076707331 sdw  65:96  active ready running
  mpath11 (200173800277f06f1) dm-8 IBM,2810XIV
  size=16G features='0' hwhandler='0' wp=rw
  |-+- policy='round-robin 0' prio=1 status=active
  | `- 4:0:2:2          sdah 66:16  active ready running
  |-+- policy='round-robin 0' prio=1 status=enabled
  | `- 4:0:4:2          sdao 66:128 active ready running
  |-+- policy='round-robin 0' prio=1 status=enabled
  | `- 5:0:2:2          sdas 66:192 active ready running
  `-+- policy='round-robin 0' prio=1 status=enabled
    `- 5:0:4:2          sdaz 67:48  active ready running
  mpath4 (36005076309ffc2f0000000000000032c) dm-0 IBM,2107900
  size=20G features='1 queue_if_no_path' hwhandler='0' wp=rw
  `-+- policy='round-robin 0' prio=1 status=active
    |- 2:0:0:1076641795 sdb  8:16   active ready running
    |- 2:0:1:1076641795 sdf  8:80   active ready running
    |- 3:0:0:1076641795 sdr  65:16  active ready running
    `- 3:0:1:1076641795 sdv  65:80  active ready running
  mpath10 (200173800277f06f2) dm-9 IBM,2810XIV
  size=16G features='0' hwhandler='0' wp=rw
  |-+- policy='round-robin 0' prio=1 status=active
  | `- 4:0:2:3          sdai 66:32  active ready running
  |-+- policy='round-robin 0' prio=1 status=enabled
  | `- 5:0:4:3          sdba 67:64  active ready running
  |-+- policy='round-robin 0' prio=1 status=enabled
  | `- 4:0:4:3          sdap 66:144 active ready running
  `-+- policy='round-robin 0' prio=1 status=enabled
    `- 5:0:2:3          sdat 66:208 active ready running
  mpath3 (200173800277f06f6) dm-5 IBM,2810XIV
  size=16G features='0' hwhandler='0' wp=rw
  |-+- policy='round-robin 0' prio=1 status=active
  | `- 2:0:6:3          sdk  8:160  active ready running
  |-+- policy='round-robin 0' prio=1 status=enabled
  | `- 2:0:7:3          sdo  8:224  active ready running
  |-+- policy='round-robin 0' prio=1 status=enabled
  | `- 3:0:6:3          sdaa 65:160 active ready running
  `-+- policy='round-robin 0' prio=1 status=enabled
    `- 3:0:7:3          sdae 65:224 active ready running
  root@zop01:/#

  
  root@zop01:/# lsblk
  NAME      MAJ:MIN RM  SIZE RO TYPE  MOUNTPOINT
  sda         8:0    0   60G  0 disk
  ??sda1      8:1    0    7M  0 part
  ??sda2      8:2    0 57.5G  0 part
  ??sda3      8:3    0  2.5G  0 part
  sdb         8:16   0   20G  0 disk
  ??mpath4  252:0    0   20G  0 mpath
  sdc         8:32   0   20G  0 disk
  ??mpath5  252:1    0   20G  0 mpath
  sdd         8:48   0   20G  0 disk
  ??mpath6  252:2    0   20G  0 mpath
  sde         8:64   0   60G  0 disk
  ??sde1      8:65   0    7M  0 part
  ??sde2      8:66   0 57.5G  0 part
  ??sde3      8:67   0  2.5G  0 part
  sdf         8:80   0   20G  0 disk
  ??mpath4  252:0    0   20G  0 mpath
  sdg         8:96   0   20G  0 disk
  ??mpath5  252:1    0   20G  0 mpath
  sdh         8:112  0   20G  0 disk
  ??mpath6  252:2    0   20G  0 mpath
  sdi         8:128  0   16G  0 disk
  ??mpath0  252:3    0   16G  0 mpath
  sdj         8:144  0   16G  0 disk
  ??mpath2  252:4    0   16G  0 mpath
  sdk         8:160  0   16G  0 disk
  ??mpath3  252:5    0   16G  0 mpath
  sdl         8:176  0   16G  0 disk
  ??mpath1  252:6    0   16G  0 mpath
  sdm         8:192  0   16G  0 disk
  ??mpath0  252:3    0   16G  0 mpath
  sdn         8:208  0   16G  0 disk
  ??mpath2  252:4    0   16G  0 mpath
  sdo         8:224  0   16G  0 disk
  ??mpath3  252:5    0   16G  0 mpath
  sdp         8:240  0   16G  0 disk
  ??mpath1  252:6    0   16G  0 mpath
  sdq        65:0    0   60G  0 disk
  ??sdq1     65:1    0    7M  0 part
  ??sdq2     65:2    0 57.5G  0 part  /
  ??sdq3     65:3    0  2.5G  0 part
  sdr        65:16   0   20G  0 disk
  ??mpath4  252:0    0   20G  0 mpath
  sds        65:32   0   20G  0 disk
  ??mpath5  252:1    0   20G  0 mpath
  sdt        65:48   0   20G  0 disk
  ??mpath6  252:2    0   20G  0 mpath
  sdu        65:64   0   60G  0 disk
  ??sdu1     65:65   0    7M  0 part
  ??sdu2     65:66   0 57.5G  0 part
  ??sdu3     65:67   0  2.5G  0 part
  sdv        65:80   0   20G  0 disk
  ??mpath4  252:0    0   20G  0 mpath
  sdw        65:96   0   20G  0 disk
  ??mpath5  252:1    0   20G  0 mpath
  sdx        65:112  0   20G  0 disk
  ??mpath6  252:2    0   20G  0 mpath
  sdy        65:128  0   16G  0 disk
  ??mpath0  252:3    0   16G  0 mpath
  sdz        65:144  0   16G  0 disk
  ??mpath2  252:4    0   16G  0 mpath
  sdaa       65:160  0   16G  0 disk
  ??mpath3  252:5    0   16G  0 mpath
  sdab       65:176  0   16G  0 disk
  ??mpath1  252:6    0   16G  0 mpath
  sdac       65:192  0   16G  0 disk
  ??mpath0  252:3    0   16G  0 mpath
  sdad       65:208  0   16G  0 disk
  ??mpath2  252:4    0   16G  0 mpath
  sdae       65:224  0   16G  0 disk
  ??mpath3  252:5    0   16G  0 mpath
  sdaf       65:240  0   16G  0 disk
  ??mpath1  252:6    0   16G  0 mpath
  sdag       66:0    0   16G  0 disk
  ??mpath9  252:7    0   16G  0 mpath
  sdah       66:16   0   16G  0 disk
  ??mpath11 252:8    0   16G  0 mpath
  sdai       66:32   0   16G  0 disk
  ??mpath10 252:9    0   16G  0 mpath
  sdaj       66:48   0   16G  0 disk
  ??mpath8  252:10   0   16G  0 mpath
  sdak       66:64   0   20G  0 disk
  ??mpath12 252:11   0   20G  0 mpath
  sdal       66:80   0   20G  0 disk
  ??mpath13 252:12   0   20G  0 mpath
  sdba       67:64   0   16G  0 disk
  ??mpath10 252:9    0   16G  0 mpath
  sdam       66:96   0   20G  0 disk
  ??mpath14 252:13   0   20G  0 mpath
  sdbb       67:80   0   16G  0 disk
  ??mpath8  252:10   0   16G  0 mpath
  sdan       66:112  0   16G  0 disk
  ??mpath9  252:7    0   16G  0 mpath
  sdao       66:128  0   16G  0 disk
  ??mpath11 252:8    0   16G  0 mpath
  sdap       66:144  0   16G  0 disk
  ??mpath10 252:9    0   16G  0 mpath
  sdaq       66:160  0   16G  0 disk
  ??mpath8  252:10   0   16G  0 mpath
  sdar       66:176  0   16G  0 disk
  ??mpath9  252:7    0   16G  0 mpath
  sdas       66:192  0   16G  0 disk
  ??mpath11 252:8    0   16G  0 mpath
  sdat       66:208  0   16G  0 disk
  ??mpath10 252:9    0   16G  0 mpath
  sdau       66:224  0   16G  0 disk
  ??mpath8  252:10   0   16G  0 mpath
  sdav       66:240  0   20G  0 disk
  ??mpath12 252:11   0   20G  0 mpath
  sdaw       67:0    0   20G  0 disk
  ??mpath13 252:12   0   20G  0 mpath
  sdax       67:16   0   20G  0 disk
  ??mpath14 252:13   0   20G  0 mpath
  sday       67:32   0   16G  0 disk
  ??mpath9  252:7    0   16G  0 mpath
  sdaz       67:48   0   16G  0 disk
  ??mpath11 252:8    0   16G  0 mpath
  root@zop01:/#

  
  root@zop01:/# lsscsi -s
  [2:0:0:1076641795]disk    IBM      2107900          .850  /dev/sdb   21.4GB
  [2:0:0:1076707331]disk    IBM      2107900          .850  /dev/sdc   21.4GB
  [2:0:0:1076772867]disk    IBM      2107900          .850  /dev/sdd   21.4GB
  [2:0:0:1083523072]disk    IBM      2107900          .850  /dev/sda   64.4GB
  [2:0:1:1076641795]disk    IBM      2107900          .850  /dev/sdf   21.4GB
  [2:0:1:1076707331]disk    IBM      2107900          .850  /dev/sdg   21.4GB
  [2:0:1:1076772867]disk    IBM      2107900          .850  /dev/sdh   21.4GB
  [2:0:1:1083523072]disk    IBM      2107900          .850  /dev/sde   64.4GB
  [2:0:2:0]    storage IBM      2810XIV-LUN-0    10.2  -               -
  [2:0:3:0]    storage IBM      2810XIV-LUN-0    10.2  -               -
  [2:0:4:0]    storage IBM      2810XIV-LUN-0    10.2  -               -
  [2:0:5:0]    storage IBM      2810XIV-LUN-0    10.2  -               -
  [2:0:6:0]    storage IBM      2810XIV-LUN-0    0000  -               -
  [2:0:6:1]    disk    IBM      2810XIV          0000  /dev/sdi   17.2GB
  [2:0:6:2]    disk    IBM      2810XIV          0000  /dev/sdj   17.2GB
  [2:0:6:3]    disk    IBM      2810XIV          0000  /dev/sdk   17.2GB
  [2:0:6:4]    disk    IBM      2810XIV          0000  /dev/sdl   17.2GB
  [2:0:7:0]    storage IBM      2810XIV-LUN-0    0000  -               -
  [2:0:7:1]    disk    IBM      2810XIV          0000  /dev/sdm   17.2GB
  [2:0:7:2]    disk    IBM      2810XIV          0000  /dev/sdn   17.2GB
  [2:0:7:3]    disk    IBM      2810XIV          0000  /dev/sdo   17.2GB
  [2:0:7:4]    disk    IBM      2810XIV          0000  /dev/sdp   17.2GB
  [3:0:0:1076641795]disk    IBM      2107900          .850  /dev/sdr   21.4GB
  [3:0:0:1076707331]disk    IBM      2107900          .850  /dev/sds   21.4GB
  [3:0:0:1076772867]disk    IBM      2107900          .850  /dev/sdt   21.4GB
  [3:0:0:1083523072]disk    IBM      2107900          .850  /dev/sdq   64.4GB
  [3:0:1:1076641795]disk    IBM      2107900          .850  /dev/sdv   21.4GB
  [3:0:1:1076707331]disk    IBM      2107900          .850  /dev/sdw   21.4GB
  [3:0:1:1076772867]disk    IBM      2107900          .850  /dev/sdx   21.4GB
  [3:0:1:1083523072]disk    IBM      2107900          .850  /dev/sdu   64.4GB
  [3:0:2:0]    storage IBM      2810XIV-LUN-0    10.2  -               -
  [3:0:3:0]    storage IBM      2810XIV-LUN-0    10.2  -               -
  [3:0:4:0]    storage IBM      2810XIV-LUN-0    10.2  -               -
  [3:0:5:0]    storage IBM      2810XIV-LUN-0    10.2  -               -
  [3:0:6:0]    storage IBM      2810XIV-LUN-0    0000  -               -
  [3:0:6:1]    disk    IBM      2810XIV          0000  /dev/sdy   17.2GB
  [3:0:6:2]    disk    IBM      2810XIV          0000  /dev/sdz   17.2GB
  [3:0:6:3]    disk    IBM      2810XIV          0000  /dev/sdaa  17.2GB
  [3:0:6:4]    disk    IBM      2810XIV          0000  /dev/sdab  17.2GB
  [3:0:7:0]    storage IBM      2810XIV-LUN-0    0000  -               -
  [3:0:7:1]    disk    IBM      2810XIV          0000  /dev/sdac  17.2GB
  [3:0:7:2]    disk    IBM      2810XIV          0000  /dev/sdad  17.2GB
  [3:0:7:3]    disk    IBM      2810XIV          0000  /dev/sdae  17.2GB
  [3:0:7:4]    disk    IBM      2810XIV          0000  /dev/sdaf  17.2GB
  [4:0:0:0]    storage IBM      2810XIV-LUN-0    10.2  -               -
  [4:0:1:0]    storage IBM      2810XIV-LUN-0    10.2  -               -
  [4:0:2:0]    storage IBM      2810XIV-LUN-0    0000  -               -
  [4:0:2:1]    disk    IBM      2810XIV          0000  /dev/sdag  17.2GB
  [4:0:2:2]    disk    IBM      2810XIV          0000  /dev/sdah  17.2GB
  [4:0:2:3]    disk    IBM      2810XIV          0000  /dev/sdai  17.2GB
  [4:0:2:4]    disk    IBM      2810XIV          0000  /dev/sdaj  17.2GB
  [4:0:3:1076838403]disk    IBM      2107900          .850  /dev/sdak  21.4GB
  [4:0:3:1076903939]disk    IBM      2107900          .850  /dev/sdal  21.4GB
  [4:0:3:1076969475]disk    IBM      2107900          .850  /dev/sdam  21.4GB
  [4:0:4:0]    storage IBM      2810XIV-LUN-0    0000  -               -
  [4:0:4:1]    disk    IBM      2810XIV          0000  /dev/sdan  17.2GB
  [4:0:4:2]    disk    IBM      2810XIV          0000  /dev/sdao  17.2GB
  [4:0:4:3]    disk    IBM      2810XIV          0000  /dev/sdap  17.2GB
  [4:0:4:4]    disk    IBM      2810XIV          0000  /dev/sdaq  17.2GB
  [5:0:0:0]    storage IBM      2810XIV-LUN-0    10.2  -               -
  [5:0:1:0]    storage IBM      2810XIV-LUN-0    10.2  -               -
  [5:0:2:0]    storage IBM      2810XIV-LUN-0    0000  -               -
  [5:0:2:1]    disk    IBM      2810XIV          0000  /dev/sdar  17.2GB
  [5:0:2:2]    disk    IBM      2810XIV          0000  /dev/sdas  17.2GB
  [5:0:2:3]    disk    IBM      2810XIV          0000  /dev/sdat  17.2GB
  [5:0:2:4]    disk    IBM      2810XIV          0000  /dev/sdau  17.2GB
  [5:0:3:1076838403]disk    IBM      2107900          .850  /dev/sdav  21.4GB
  [5:0:3:1076903939]disk    IBM      2107900          .850  /dev/sdaw  21.4GB
  [5:0:3:1076969475]disk    IBM      2107900          .850  /dev/sdax  21.4GB
  [5:0:4:0]    storage IBM      2810XIV-LUN-0    0000  -               -
  [5:0:4:1]    disk    IBM      2810XIV          0000  /dev/sday  17.2GB
  [5:0:4:2]    disk    IBM      2810XIV          0000  /dev/sdaz  17.2GB
  [5:0:4:3]    disk    IBM      2810XIV          0000  /dev/sdba  17.2GB
  [5:0:4:4]    disk    IBM      2810XIV          0000  /dev/sdbb  17.2GB
  root@zop01:/#

  == Comment: #6 - GIRISH SHRIGIRI <gshrigir@xxxxxxxxxx> - 2015-02-23 11:23:04 ==
  multipath command  should show boot disk .

  == Comment: #14 - Brian J. King <bjking1@xxxxxxxxxx> - 2015-02-25
  13:26:41 ==

  There is a real issue in this bugzilla, and its related to the boot
  device.

  The reason the boot disk is not showing up in the multipath output is
  because the system is booting off a single path rather than the
  multipath device:

  root@zop01:/tmp/out# df 
  Filesystem                1K-blocks      Used Available Use% Mounted on
  /dev/sdq2                  59214188   7307684  48875468  14% /

  It looks like grub.cfg is mounting the root device by UUID. /etc/fstab
  is saying the root device should be /dev/mapper/mpath0p2. So it would
  appear there may be a boot time init script issue here. I'm thinking
  what might be happening here is that the boot process is not waiting
  for the multipath device to proceed with boot and simply mounting by
  UUID before the multipath device gets created, which results in us
  grabbing a single path rather than the multipath device.

  This should probably get mirrored to Canonical for them to have a
  look... I'm thinking that their scripts/local file in the initrd may
  need some changes to better handle this. You could probably change the
  root= parameter in grub to point to /dev/mapper/mpath0p2 and that may
  work around the issue.

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