[Bug 1489959] Re: power8 scsii disks get blacklisted from multipath / curtin installed system doesnt boot

[Scott Moser]

related or duplicate bug 1474984

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Title:
  power8 scsii disks get blacklisted from multipath / curtin installed
  system doesnt boot

Status in multipath-tools package in Ubuntu:
  New

Bug description:
  I attempted to install a curtin power 8 system with wily today today.
  It failed at initramfs not finding the multipath device.

  I then forced installation without udev (by putting 'multipath: mode:
  disabled' into /etc/maas/preseeds/curtin_userdata).

  Then, looking around to debug:

  ## wily system (no multipath used for boot, but package installed)
  $ dpkg-query --show multipath-tools
  multipath-tools 0.5.0-7ubuntu3

  $ sudo multipath -ll
  $ echo $?
  0
  $ sudo multipath -ll -v 3 > wily-multipath-ll-v3.txt
  $ grep sda wily-multipath-ll-v3.txt 
  Aug 28 16:24:27 | sda: blacklisted, udev property missing

  
  ## vivid system (working multipath used for boot)
  $ dpkg-query --show multipath-tools
  multipath-tools   0.4.9-3ubuntu7.2

  $ sudo multipath -ll
  mpath2 (1IBM     IPR-0   5EC2A90000000060) dm-1 IBM,IPR-0   5EC2A900
  size=264G features='1 queue_if_no_path' hwhandler='1 alua' wp=rw
  |-+- policy='round-robin 0' prio=0 status=enabled
  | `- 0:2:1:0 sdb 8:16  active faulty running
  `-+- policy='round-robin 0' prio=10 status=active
    `- 1:2:1:0 sdh 8:112 active ready  running
  mpath1 (1IBM     IPR-0   5EC2A90000000040) dm-2 IBM,IPR-0   5EC2A900
  size=264G features='1 queue_if_no_path' hwhandler='1 alua' wp=rw
  |-+- policy='round-robin 0' prio=0 status=enabled
  | `- 0:2:2:0 sdc 8:32  active faulty running
  `-+- policy='round-robin 0' prio=10 status=active
    `- 1:2:2:0 sdi 8:128 active ready  running
  mpath0 (1IBM     IPR-0   5EC2A90000000080) dm-4 IBM,IPR-0   5EC2A900
  size=264G features='1 queue_if_no_path' hwhandler='1 alua' wp=rw
  |-+- policy='round-robin 0' prio=130 status=active
  | `- 0:2:0:0 sda 8:0   active ready  running
  `-+- policy='round-robin 0' prio=0 status=enabled
    `- 1:2:0:0 sdg 8:96  active faulty running
  mpath5 (1IBM     IPR-0   5EC2A900000000A0) dm-0 IBM,IPR-0   5EC2A900
  size=264G features='1 queue_if_no_path' hwhandler='1 alua' wp=rw
  |-+- policy='round-robin 0' prio=0 status=enabled
  | `- 0:2:5:0 sdf 8:80  active faulty running
  `-+- policy='round-robin 0' prio=10 status=active
    `- 1:2:5:0 sdl 8:176 active ready  running
  mpath4 (1IBM     IPR-0   5EC2A900000000C0) dm-5 IBM,IPR-0   5EC2A900
  size=264G features='1 queue_if_no_path' hwhandler='1 alua' wp=rw
  |-+- policy='round-robin 0' prio=0 status=enabled
  | `- 0:2:4:0 sde 8:64  active faulty running
  `-+- policy='round-robin 0' prio=10 status=active
    `- 1:2:4:0 sdk 8:160 active ready  running
  mpath3 (1IBM     IPR-0   5EC2A90000000020) dm-3 IBM,IPR-0   5EC2A900
  size=264G features='1 queue_if_no_path' hwhandler='1 alua' wp=rw
  |-+- policy='round-robin 0' prio=0 status=enabled
  | `- 0:2:3:0 sdd 8:48  active faulty running
  `-+- policy='round-robin 0' prio=10 status=active
    `- 1:2:3:0 sdj 8:144 active ready  running

  
  $ sudo multipath -ll -v 3 > vivid-multipath-ll-v3.txt
  $ grep sda vivid-multipath-ll-v3.txt 
  Aug 28 16:21:34 | sda: not found in pathvec
  Aug 28 16:21:34 | sda: mask = 0x5
  Aug 28 16:21:34 | sda: dev_t = 8:0
  Aug 28 16:21:34 | sda: size = 554287104
  Aug 28 16:21:34 | sda: subsystem = scsi
  Aug 28 16:21:34 | sda: vendor = IBM
  Aug 28 16:21:34 | sda: product = IPR-0   5EC2A900
  Aug 28 16:21:34 | sda: rev = 
  Aug 28 16:21:34 | sda: h:b:t:l = 0:2:0:0
  Aug 28 16:21:34 | sda: get_state
  Aug 28 16:21:34 | sda: path checker = tur (controller setting)
  Aug 28 16:21:34 | sda: state = running
  Aug 28 16:21:34 | sda: state = 3
       0:2:0:0 sda 8:0   -1  undef ready  IBM,IPR-0   5EC2A900 running
  Aug 28 16:21:34 | sda: mask = 0x8
  Aug 28 16:21:34 | sda: prio = alua (controller setting)
  Aug 28 16:21:34 | sda: prio args = (null) (controller setting)
  Aug 28 16:21:34 | sda: alua prio = 130
  | `- 0:2:0:0 sda 8:0   active ready  running

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: multipath-tools 0.5.0-7ubuntu3
  ProcVersionSignature: User Name 4.1.0-3.3-generic 4.1.3
  Uname: Linux 4.1.0-3-generic ppc64le
  ApportVersion: 2.18-0ubuntu7
  Architecture: ppc64el
  Date: Fri Aug 28 16:15:26 2015
  ProcEnviron:
   TERM=screen
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcLoadAvg: 0.01 0.19 0.17 1/1086 13536
  ProcLocks:
   1: POSIX  ADVISORY  WRITE 2075 00:13:522 0 EOF
   2: POSIX  ADVISORY  WRITE 3326 00:13:746 0 EOF
   3: POSIX  ADVISORY  WRITE 2092 00:13:721 0 EOF
   4: FLOCK  ADVISORY  WRITE 2085 00:13:716 0 EOF
  ProcSwaps:
   Filename				Type		Size	Used	Priority
   /swap.img                               file		8388544	0	-1
  ProcVersion: Linux version 4.1.0-3-generic (buildd at fisher03) (gcc version 4.9.3 (User Name 4.9.3-2ubuntu1) ) #3-User Name SMP Tue Jul 28 12:23:44 UTC 2015
  SourcePackage: multipath-tools
  UpgradeStatus: No upgrade log present (probably fresh install)
  cpu_cores: Number of cores present = 20
  cpu_coreson: Number of cores online = 20
  cpu_smt: SMT=8

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