[Kernel-packages] [Bug 1425773] Comment bridged from LTC Bugzilla

2015-03-17 Thread bugproxy
--- Comment From vaish...@in.ibm.com 2015-03-17 08:19 EDT---
*** Bug 122657 has been marked as a duplicate of this bug. ***

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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 gshri...@in.ibm.com - 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 (36005076309ffc2f00331) 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 (36005076309ffc2f00330) 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 (36005076309ffc2f0032e) 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 (36005076309ffc2f0032f) 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 (36005076309ffc2f0032d) 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
|- 

[Kernel-packages] [Bug 1425773] Comment bridged from LTC Bugzilla

2015-03-16 Thread bugproxy
--- Comment From mauri...@br.ibm.com 2015-03-16 15:48 EDT---
Per the internal discussion, this may be a duplicate of LP 1429327 / LTC BZ 
122037.

During early boot (initramfs), the multipath command may run *before*
the completion of the SCSI scan over FC ports, but the mount of root
filesystem will wait for it.

As a result, the SCSI disks over FC are not assigned to multipath
devices, and the UUIDs will be assigned to them (because no mpathX
devices will be created).

Thus, the system boots off the one-path device rather than the multipath
device, due to the root=UUID specification.

If the bug reported run the multipath command after the system booted,
there will be the mpathX devices for the SCSI disks over FC, but those
were not present at the time the initramfs assigned UUIDs  pivot'ed the
root filesystem.

I'll be looking at this when the system is available for debugging.

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Title:
  multipath command not showing boot disk information

Status in linux package in Ubuntu:
  New

Bug description:
  == Comment: #0 - GIRISH SHRIGIRI gshri...@in.ibm.com - 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 (36005076309ffc2f00331) 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 (36005076309ffc2f00330) 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 (36005076309ffc2f0032e) dm-2 IBM,2107900
  size=20G features='1 queue_if_no_path' hwhandler='0' wp=rw
  `-+- policy='round-robin 0' prio=1 

[Kernel-packages] [Bug 1425773] Comment bridged from LTC Bugzilla

2015-03-16 Thread bugproxy
--- Comment From helle...@us.ibm.com 2015-03-16 17:27 EDT---
*** Bug 122657 has been marked as a duplicate of this bug. ***

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
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 gshri...@in.ibm.com - 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 (36005076309ffc2f00331) 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 (36005076309ffc2f00330) 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 (36005076309ffc2f0032e) 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 (36005076309ffc2f0032f) 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 (36005076309ffc2f0032d) 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
|- 

[Kernel-packages] [Bug 1425773] Comment bridged from LTC Bugzilla

2015-02-26 Thread bugproxy
--- Comment From helle...@us.ibm.com 2015-02-26 16:51 EDT---
Hi Brian,

As you observed, grub.cfg has root=UUID=e3142d5d-f8f1-4278-a08a-
6bda31d2dc79 as it's default entry, and has alternate entries for
/dev/sda, sde, sdq and sdu also.  None of these drives is in a multipath
group.

Is the expectation here that these should belong to a multipath group,
and the system should be booted from the multipath device?  Should this
UUID be pointing to a multipath device instead of a single path?  Could
this have been an install problem?

Given that the UUID points to a single path device, it does look correct
as it's booted currently:

root@zop01:~# cat /proc/cmdline
BOOT_IMAGE=/boot/vmlinux-3.18.0-13-generic 
root=UUID=e3142d5d-f8f1-4278-a08a-6bda31d2dc79 ro splash quiet

root@zop01:~# ll /dev/disk/by-uuid/*c79
lrwxrwxrwx 1 root root 10 Feb 18 07:11 
/dev/disk/by-uuid/e3142d5d-f8f1-4278-a08a-6bda31d2dc79 - ../../sdu2

root@zop01:~# mount
/dev/sdq2 on / type ext4 (rw,errors=remount-ro)

Second, on the /etc/fstab:

root@zop01:~# cat /etc/fstab
# /etc/fstab: static file system information.
#
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
#
# file system mount point   type  options   dump  pass
/dev/mapper/mpath0p2 /   ext4errors=remount-ro 0   1
/dev/mapper/mpath0p3 noneswapsw  0   0
...

Again we see this naming inconsistency,  Currently, this system has only
the /dev/mapper/mpathX-partX names, none of the /dev/mapper/mpathXpX
names.

-- 
You received this bug notification because you are a member of Kernel
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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 gshri...@in.ibm.com - 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 

[Kernel-packages] [Bug 1425773] Comment bridged from LTC Bugzilla

2015-02-26 Thread bugproxy
--- Comment From bjki...@us.ibm.com 2015-02-26 21:17 EDT---
(In reply to comment #21)
 Hi Brian,

 As you observed, grub.cfg has
 root=UUID=e3142d5d-f8f1-4278-a08a-6bda31d2dc79 as it's default entry, and
 has alternate entries for /dev/sda, sde, sdq and sdu also.  None of these
 drives is in a multipath group.

 Is the expectation here that these should belong to a multipath group, and
 the system should be booted from the multipath device?

Yes. Looking at the output of scsi_id for these devices, we see they are
the same underlying device:

root@zop01:~# /lib/udev/scsi_id -p 0x83 -g -d /dev/sda
36005076309ffc2f00095
root@zop01:~# /lib/udev/scsi_id -p 0x83 -g -d /dev/sde
36005076309ffc2f00095
root@zop01:~# /lib/udev/scsi_id -p 0x83 -g -d /dev/sdq
36005076309ffc2f00095
root@zop01:~# /lib/udev/scsi_id -p 0x83 -g -d /dev/sdu
36005076309ffc2f00095

 Should this UUID be pointing to a multipath device instead of a single
path?

Yes.

 Could this have been an install problem?

Yes.

Girish - can you confirm when you installed the system you enabled
multipath in the installer?

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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 gshri...@in.ibm.com - 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 (36005076309ffc2f00331) 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 (36005076309ffc2f00330) 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