[Bug 1386637] Re: multipath shows non-mpath disks as being multipath

[Mauricio Faria de Oliveira]

The verification for vivid is no longer relevant as it's EOL by Feb,
2016. Thanks.

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  multipath shows non-mpath disks as being multipath

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[Bug 1386637] Re: multipath shows non-mpath disks as being multipath

[Brian Murray]

Hello bugproxy, or anyone else affected,

Accepted multipath-tools into vivid-proposed. The package will build now
and be available at https://launchpad.net/ubuntu/+source/multipath-
tools/0.4.9-3ubuntu12.15.04.2 in a few hours, and then in the -proposed
repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to
enable and use -proposed.  Your feedback will aid us getting this update
out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested, and change the tag
from verification-needed to verification-done. If it does not fix the
bug for you, please add a comment stating that, and change the tag to
verification-failed.  In either case, details of your testing will help
us make a better decision.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance!

** Changed in: multipath-tools (Ubuntu Vivid)
   Status: In Progress => Fix Committed

** Tags removed: verification-done

** Tags added: verification-needed

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[Bug 1386637] Re: multipath shows non-mpath disks as being multipath

[Mathieu Trudel-Lapierre]

** Also affects: multipath-tools (Ubuntu Vivid)
   Importance: Undecided
   Status: New

** Changed in: multipath-tools (Ubuntu Vivid)
   Status: New => In Progress

** Changed in: multipath-tools (Ubuntu Vivid)
   Importance: Undecided => High

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  multipath shows non-mpath disks as being multipath

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[Bug 1386637] Re: multipath shows non-mpath disks as being multipath

[Launchpad Bug Tracker]

This bug was fixed in the package multipath-tools - 0.4.9-3ubuntu7.6

---
multipath-tools (0.4.9-3ubuntu7.6) trusty; urgency=medium

  * debian/patches/0043-alloc-keywords.patch: fix uninitialized keywords
vector for configuration parsing for when there is no multipath.conf file
present.

multipath-tools (0.4.9-3ubuntu7.5) trusty; urgency=medium

  * Cherry-picked patches to ignore local non-mpath devices:
(LP: #1386637, #1468897)
- 0001-multipath-add-checker_timeout-default-config-option.patch
- 0002-Make-params-variable-local.patch
- 0003-libmultipath-Fix-possible-string-overflow.patch
- 0004-Update-hwtable-factorization.patch
- 0005-Fixup-strip-trailing-whitespaces-for-getuid-return-v.patch
- 0006-Remove-sysfs_attr-cache.patch
- 0007-Move-setup_thread_attr-to-uevent.c.patch
- 0008-Use-lists-for-uevent-processing.patch
- 0009-Start-uevent-service-handler-from-main-thread.patch
- 0010-libmultipath-rework-sysfs-handling.patch
- 0011-Rework-sysfs-device-handling-in-multipathd.patch
- 0012-Only-check-offline-status-for-SCSI-devices.patch
- 0013-Check-for-offline-path-in-get_prio.patch
- 0014-libmultipath-Remove-duplicate-calls-to-path_offline.patch
- 0015-Update-dev_loss_tmo-for-no_path_retry.patch
- 0016-Reload-map-for-device-read-only-setting-changes.patch
- 0017-multipath-get-right-sysfs-value-for-checker_timeout.patch
- 0018-multipath-handle-offlined-paths.patch
- 0019-multipath-fix-scsi-timeout-code.patch
- 0020-multipath-make-tgt_node_name-work-for-iscsi-devices.patch
- 0021-multipath-cleanup-dev_loss_tmo-issues.patch
- 0022-Fix-for-setting-0-to-fast_io_fail.patch
- 0023-Fix-fast_io_fail-capping.patch
- 0024-multipath-enable-getting-uevents-through-libudev.patch
- 0025-Use-devpath-as-argument-for-sysfs-functions.patch
- 0026-multipathd-remove-references-to-sysfs_device.patch
- 0027-multipathd-use-struct-path-as-argument-for-event-pro.patch
- 0028-Add-global-udev-reference-pointer-to-config.patch
- 0029-Use-udev-enumeration-during-discovery.patch
- 0030-use-struct-udev_device-during-discovery.patch
- 0031-More-debugging-output-when-synchronizing-path-states.patch
- 0032-Use-struct-udev_device-instead-of-sysdev.patch
- 0033-discovery-Fixup-cciss-discovery.patch
- 0035-Use-udev-devices-during-discovery.patch
- 0036-Remove-all-references-to-hand-craftes-sysfs-code.patch
- 0037-multipath-libudev-cleanup-and-bugfixes.patch
- 0038-multipath-check-if-a-device-belongs-to-multipath.patch
- 0039-multipath-and-wwids_file-multipath.conf-option.patch
- 0040-multipath-Check-blacklists-as-soon-as-possible.patch
- 0041-add-wwids-file-cleanup-options.patch
- 0042-add-find_multipaths-option.patch
  * debian/rules: don't ship 95-multipath.rules udev rules anymore; they are
not necessary with multipath-tools listening for udev events directly.
  * debian/multipath.udev: removed.
  * debian/multipath-tools.postinst: run multipath -W so that we get a properly
formed wwids file on upgrade.
  * debian/initramfs/hooks: copy the wwids file in the initramfs so that it is
available when multipath-tools initially discovers path to possibly bring
up the rootfs.

 -- Mathieu Trudel-Lapierre   Tue, 06 Oct 2015
22:13:59 -0400

** Changed in: multipath-tools (Ubuntu Trusty)
   Status: Fix Committed => Fix Released

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  multipath shows non-mpath disks as being multipath

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[Bug 1386637] Re: multipath shows non-mpath disks as being multipath

[Mathieu Trudel-Lapierre]

It's been a few days now and I was able to verify the fix in what looked
like an appropriate manner; marking verification-done. We should move
forward with shipping this fix.

** Tags removed: verification-needed
** Tags added: verification-done

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  multipath shows non-mpath disks as being multipath

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[Bug 1386637] Re: multipath shows non-mpath disks as being multipath

[Mauricio Faria de Oliveira]

Hi Mathieu,

I apologize on the delay here. 
As you may know, I'm a bit away from usual bug work for a few weeks.
I still expect to get that SRU verification done in some time.

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  multipath shows non-mpath disks as being multipath

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[Bug 1386637] Re: multipath shows non-mpath disks as being multipath

[Mathieu Trudel-Lapierre]

Mauricio,

Have you managed to test this successfully? I was able to build a vm and
test this, but I'm not certain whether the behavior, although it looks
correct in detecting the path changes, it indeed correct.

There's one noticeable difference at least on qemu; when the paths are
detected as removed they stop being listed at all in multipath -ll
output.

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  multipath shows non-mpath disks as being multipath

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[Bug 1386637] Re: multipath shows non-mpath disks as being multipath

[Steve Langasek]

Mauricio,

If you can test this week, that would be perfect.  Thanks!

I see bug #1503305 has been submitted about a display error when
injecting a path failure, but that appears to be done with the
multipath-tools in 14.04.0 so doesn't bear on this SRU.

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[Bug 1386637] Re: multipath shows non-mpath disks as being multipath

[Mauricio Faria de Oliveira]

@vorlon

Hi Steve,

I've been told you asked for priority in this testing during today's interlock.
It's was already on my list, but now it's moved higher.

I hope sometime next week is not a problem?

Thanks.

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  multipath shows non-mpath disks as being multipath

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[Bug 1386637] Re: multipath shows non-mpath disks as being multipath

[Steve Langasek]

The 0.4.9-3ubuntu7.6 version of multipath-tools is available in trusty-
proposed.  We have verified that USB disks are no longer being
incorrectly tagged as multipath in this version.  We have also corrected
the regression that caused 'multipath -l' to segfault previously.  But
we don't have affirmative confirmation that this new version won't cause
regressions in the handling of failover paths, which is a concern
because of the changes to the udev rules.

Can someone with access to the necessary hardware to test the multipath
failover (which according to this bug report requires FC or similar)
please verify that this works with the -proposed version of multipath-
tools?  Edward, Mauricio?

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[Bug 1386637] Re: multipath shows non-mpath disks as being multipath

[Brian Murray]

Hello bugproxy, or anyone else affected,

Accepted multipath-tools into trusty-proposed. The package will build
now and be available at https://launchpad.net/ubuntu/+source/multipath-
tools/0.4.9-3ubuntu7.6 in a few hours, and then in the -proposed
repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to
enable and use -proposed.  Your feedback will aid us getting this update
out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested, and change the tag
from verification-needed to verification-done. If it does not fix the
bug for you, please add a comment stating that, and change the tag to
verification-failed.  In either case, details of your testing will help
us make a better decision.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance!

** Tags removed: verification-failed

** Tags added: verification-needed

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  multipath shows non-mpath disks as being multipath

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[Bug 1386637] Re: multipath shows non-mpath disks as being multipath

[Mauricio Faria de Oliveira]

Hi @mathieu-tl,

Marking as verification-failed since the version from -proposed hits a segfault 
in 'multipath -l'.
Here are some details/stack trace:

It segfaults:

# multipath -l
Segmentation fault

Trusty / 14.04.3:

# lsb_release -d
Description:Ubuntu 14.04.3 LTS

# uname -a
Linux plzp17 3.19.0-29-generic #31~14.04.1-Ubuntu SMP Thu Sep 10 
09:45:11 UTC 2015 ppc64le ppc64le ppc64le GNU/Linux

Using multipath-tools from trusty-proposed (0.4.9-3ubuntu7.5)

# apt-cache policy multipath-tools
multipath-tools:
  Installed: 0.4.9-3ubuntu7.5
  Candidate: 0.4.9-3ubuntu7.5
  Version table:
 *** 0.4.9-3ubuntu7.5 0
500 http://ports.ubuntu.com/ubuntu-ports/ trusty-proposed/main 
ppc64el Packages
100 /var/lib/dpkg/status
 0.4.9-3ubuntu7.4 0
500 http://ports.ubuntu.com/ubuntu-ports/ trusty-updates/main 
ppc64el Packages
 0.4.9-3ubuntu7 0
500 http://ports.ubuntu.com/ubuntu-ports/ trusty/main ppc64el 
Packages

# dpkg -l | grep 'multipath\|kpartx'
ii  kpartx  0.4.9-3ubuntu7.5
 ppc64el  create device mappings for partitions
ii  kpartx-boot 0.4.9-3ubuntu7.5
 all  Provides kpartx during boot
ii  multipath-tools 0.4.9-3ubuntu7.5
 ppc64el  maintain multipath block device access
ii  multipath-tools-boot0.4.9-3ubuntu7.5
 all  Support booting from multipath devices


Problem contained in libmultipath, not any external library/component, in the 
initialization phase:

# gdb multipath
GNU gdb (Ubuntu 7.7.1-0ubuntu5~14.04.2) 7.7.1
...
(gdb) run -l
Starting program: /sbin/multipath -l
...
Program received signal SIGSEGV, Segmentation fault.
0x3fffb7e3fd70 in vector_alloc_slot () from /lib/libmultipath.so.0
(gdb) bt
#0  0x3fffb7e3fd70 in vector_alloc_slot () from 
/lib/libmultipath.so.0
#1  0x3fffb7e3e200 in keyword_alloc () from /lib/libmultipath.so.0
#2  0x3fffb7e3e2c4 in install_keyword_root () from 
/lib/libmultipath.so.0
#3  0x3fffb7e5ac34 in init_keywords () from /lib/libmultipath.so.0
#4  0x3fffb7e4a54c in load_config () from /lib/libmultipath.so.0
#5  0x10002bcc in ?? ()
#6  0x3fffb7c94d00 in generic_start_main (main=0x10002b10, 
argc=, 
argv=0x3a28, auxvec=0x3b30, init=, 
rtld_fini=, 
stack_end=, fini=) at 
../csu/libc-start.c:287
#7  0x3fffb7c94ef8 in __libc_start_main (argc=, 
argv=, 
ev=, auxvec=, rtld_fini=, stinfo=, 
stack_on_entry=) at 
../sysdeps/unix/sysv/linux/powerpc/libc-start.c:93
#8  0x in ?? ()
(gdb)

Downgrading to version in trusty-updates (0.4.9-3ubuntu7.4):

# apt-get install {multipath-tools,kpartx}{,-boot}=0.4.9-3ubuntu7.4
...
The following packages will be DOWNGRADED:
  kpartx kpartx-boot multipath-tools multipath-tools-boot
...
Get:1 http://ports.ubuntu.com/ubuntu-ports/ trusty-updates/main 
multipath-tools-boot all 0.4.9-3ubuntu7.4 [6,070 B]
Get:2 http://ports.ubuntu.com/ubuntu-ports/ trusty-updates/main 
multipath-tools ppc64el 0.4.9-3ubuntu7.4 [108 kB]
Get:3 http://ports.ubuntu.com/ubuntu-ports/ trusty-updates/main 
kpartx-boot all 0.4.9-3ubuntu7.4 [2,116 B]
Get:4 http://ports.ubuntu.com/ubuntu-ports/ trusty-updates/main kpartx 
ppc64el 0.4.9-3ubuntu7.4 [19.0 kB]
...

Now it works fine:

# multipath -l
36005076303ffd2a40345 dm-2 AIX,VDASD
size=50G features='1 queue_if_no_path' hwhandler='0' wp=rw
`-+- policy='round-robin 0' prio=-1 status=active
  |- 0:0:4:0 sdd 8:48  active undef running
  `- 1:0:4:0 sdh 8:112 active undef running
36005076303ffd2a40344 dm-1 AIX,VDASD
size=50G features='1 queue_if_no_path' hwhandler='0' wp=rw
`-+- policy='round-robin 0' prio=-1 status=active
  |- 0:0:3:0 sdc 8:32  active undef running
  `- 1:0:3:0 sdg 8:96  active undef running
36005076303ffd2a40343 dm-0 AIX,VDASD
size=50G features='1 queue_if_no_path' hwhandler='0' wp=rw
`-+- policy='round-robin 0' prio=-1 status=active
  |- 0:0:2:0 sdb 8:16  active undef running
  `- 1:0:2:0 sdf 8:80  active undef running

# echo $?
0


** Tags removed: verification-needed
** Tags added: verification-failed

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Title:
  multipath shows 

[Bug 1386637] Re: multipath shows non-mpath disks as being multipath

[Mathieu Trudel-Lapierre]

Any news on verifying this?

Edward, looks like the devices aren't set up to have the same serial
number, so I'm not sure why they would ever be picked up by multipath as
being multipath devices. In any case, have you tested the update in
-proposed, which should fix this?

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[Bug 1386637] Re: multipath shows non-mpath disks as being multipath

[brandyseres...@gmail.com]

** Changed in: multipath-tools (Ubuntu)
 Assignee: (unassigned) = brandyseres...@gmail.com (brandyseres256)

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[Bug 1386637] Re: multipath shows non-mpath disks as being multipath

[Mathieu Trudel-Lapierre]

This is already fixed in wily by way of multipath 0.5.0.

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[Bug 1386637] Re: multipath shows non-mpath disks as being multipath

[Steve Langasek]

** Also affects: multipath-tools (Ubuntu Trusty)
   Importance: Undecided
   Status: New

** Changed in: multipath-tools (Ubuntu Trusty)
   Status: New = Fix Committed

** Changed in: multipath-tools (Ubuntu Trusty)
   Importance: Undecided = High

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  multipath shows non-mpath disks as being multipath

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[Bug 1386637] Re: multipath shows non-mpath disks as being multipath

[Mathieu Trudel-Lapierre]

** Changed in: multipath-tools (Ubuntu)
   Status: Triaged = Fix Released

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[Bug 1386637] Re: multipath shows non-mpath disks as being multipath

[Mathieu Trudel-Lapierre]

** Changed in: multipath-tools (Ubuntu)
 Assignee: brandyseres...@gmail.com (brandyseres256) = (unassigned)

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[Bug 1386637] Re: multipath shows non-mpath disks as being multipath

[Mathew Hodson]

** Changed in: multipath-tools (Ubuntu)
   Importance: Medium = High

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[Bug 1386637] Re: multipath shows non-mpath disks as being multipath

[Mathew Hodson]

** Changed in: multipath-tools (Ubuntu)
   Importance: Undecided = Medium

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Title:
  multipath shows non-mpath disks as being multipath

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[Bug 1386637] Re: multipath shows non-mpath disks as being multipath

[Mathew Hodson]

** Changed in: multipath-tools (Ubuntu)
   Status: New = Triaged

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https://bugs.launchpad.net/bugs/1386637

Title:
  multipath shows non-mpath disks as being multipath

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[Bug 1386637] Re: multipath shows non-mpath disks as being multipath

[Mathieu Trudel-Lapierre]

** Description changed:

  [Impact]
  Users of multipath-tools on systems which exhibit both multipathed and 
non-multipathed drives or some USB devices (some USB devices may still be 
picked up by multipath-tools if multipath-capable).
  
  [Test case]
  - Boot on a system with multipathed disks with the previous version of 
multipath-tools
  - Upgrade to the new version; verify that /etc/multipath/wwids is created and 
contains all the right device WWIDs, and that 'sudo multipath -ll' has the same 
devices.
  - Reboot and verify that the system still boots correctly.
+ - Using Fibre-Channel hardware: verify that multipath still behaves correctly 
for path degradation scenarios (see below).
  
  After rebooting, you should verify that /proc/mounts correctly lists the
  multipath device (/dev/mapper/*), and that /proc/swaps also lists any
  swap partitions that should be on a multipathed disk as a /dev/dm-*
  device.
+ 
+ PATH DEGRADATION:
+ -- This test requires fibre-channel hardware or another method to be able to 
disconnect paths to a drive.
+ 1) verify that on disconnecting a path, it is properly detected as being in 
degraded mode by multipath-tools; and shows as such in 'multipath -ll'.
+ 2) verify that on reconnection, the path shows up again as ready or OK in 
'multipath -ll'.
+ 
  
  [Regression potential]
  Systems in complex setups mixing both multipathed and non-multipathed disks, 
or with particularly slow disk controllers may fail to boot or show delays in 
booting. Systems requiring a particular set of partitions to be available in 
early boot (past the typical installs on /, some may require /usr to be 
available for some daemons to load on boot) could fail to properly start up all 
the software on boot; these should be considered as regressions only if devices 
do not properly show up in 'sudo multipath -ll' output.
  
  Users seeing issues should preferrably include the output of 'sudo
  multipath -v4' to bug reports to help developers in debugging.
  
  ---
- 
  
  Problem Description
  ==
  non-multpath disks are classified as multipath after the multipath-tools 
package is installed.
  
  ---uname output---
  Linux uu04g1 3.16.0-21-generic #28-Ubuntu SMP Mon Oct 6 15:57:32 UTC 2014 
ppc64le ppc64le ppc64le GNU/Linux
  
  Machine Type = Tuleta pKVM guest
  
  Steps to Reproduce
  =
  1) Create a guest with an unused, non-mpath disk (not the install disk) (a 
qemu img file is fine).
  2) apt-get install multipath-tools.
  3) multipath -ll.
  4)  Note that  your file backed disks are showing up as mpath disks.
  
  Userspace tool common name: multipath
  The userspace tool has the following bit modes: 64
  
  System Dump Info:
    The system is not configured to capture a system dump.
  
  Userspace rpm: multipath-tools
  Userspace tool obtained from project website:  multipath-tools v0.4.9 (05/33, 
2016)
  
  == Comment: #1 - Edward R. Cheslek eches...@us.ibm.com - ==
  root@uu04g1:~# multipath -ll
  0QEMUQEMU HARDDISK   drive-scsi0-0-1-0 dm-0 QEMU,QEMU HARDDISK
  size=20G features='0' hwhandler='0' wp=rw
  `-+- policy='round-robin 0' prio=1 status=active
    `- 0:0:1:0 sdb 8:16 active ready running
  0QEMUQEMU HARDDISK   drive-scsi0-0-2-0 dm-1 QEMU,QEMU HARDDISK
  size=20G features='0' hwhandler='0' wp=rw
  `-+- policy='round-robin 0' prio=1 status=active
    `- 0:0:2:0 sdc 8:32 active ready running
  root@uu04g1:~# lsblk
  NAME  MAJ:MIN RM  SIZE RO TYPE  
MOUNTPOINT
  sda 8:00   20G  0 disk
  ??sda1  8:107M  0 part
  ??sda2  8:20 19.1G  0 part  /
  ??sda3  8:30  896M  0 part  
[SWAP]
  sdb 8:16   0   20G  0 disk
  ??0QEMU\x20\x20\x20\x20QEMU\x20HARDDISK\x20\x20\x20drive-scsi0-0-1-0
    252:00   20G  0 mpath
  sdc 8:32   0   20G  0 disk
  ??0QEMU\x20\x20\x20\x20QEMU\x20HARDDISK\x20\x20\x20drive-scsi0-0-2-0
    252:10   20G  0 mpath
  root@uu04g1:~#
  root@uu04g1:~# lsscsi
  [0:0:0:0]diskQEMU QEMU HARDDISK2.0.  /dev/sda
  [0:0:1:0]diskQEMU QEMU HARDDISK2.0.  /dev/sdb
  [0:0:2:0]diskQEMU QEMU HARDDISK2.0.  /dev/sdc
  
  == Comment: #2 - Edward R. Cheslek eches...@us.ibm.com - 2014-10-08 
22:27:09 ==
  This is the xml file of the affected guest.  Please note that all disks are 
file backed.
  
  root@uu04g1:~# multipath -l
  0QEMUQEMU HARDDISK   drive-scsi0-0-1-0 dm-0 QEMU,QEMU HARDDISK
  size=20G features='0' hwhandler='0' wp=rw
  `-+- policy='round-robin 0' prio=-1 status=active
    `- 0:0:1:0 sdb 8:16 active undef running
  0QEMUQEMU HARDDISK 

[Bug 1386637] Re: multipath shows non-mpath disks as being multipath

[Steve Langasek]

Hello bugproxy, or anyone else affected,

Accepted multipath-tools into trusty-proposed. The package will build
now and be available at https://launchpad.net/ubuntu/+source/multipath-
tools/0.4.9-3ubuntu7.5 in a few hours, and then in the -proposed
repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to
enable and use -proposed.  Your feedback will aid us getting this update
out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested, and change the tag
from verification-needed to verification-done. If it does not fix the
bug for you, please add a comment stating that, and change the tag to
verification-failed.  In either case, details of your testing will help
us make a better decision.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance!

** Tags added: verification-needed

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https://bugs.launchpad.net/bugs/1386637

Title:
  multipath shows non-mpath disks as being multipath

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https://bugs.launchpad.net/ubuntu/+source/multipath-tools/+bug/1386637/+subscriptions

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[Bug 1386637] Re: multipath shows non-mpath disks as being multipath

[Mathieu Trudel-Lapierre]

** Description changed:

+ [Impact]
+ Users of multipath-tools on systems which exhibit both multipathed and 
non-multipathed drives or some USB devices (some USB devices may still be 
picked up by multipath-tools if multipath-capable).
+ 
+ [Test case]
+ - Boot on a system with multipathed disks with the previous version of 
multipath-tools
+ - Upgrade to the new version; verify that /etc/multipath/wwids is created and 
contains all the right device WWIDs, and that 'sudo multipath -ll' has the same 
devices.
+ - Reboot and verify that the system still boots correctly.
+ 
+ After rebooting, you should verify that /proc/mounts correctly lists the
+ multipath device (/dev/mapper/*), and that /proc/swaps also lists any
+ swap partitions that should be on a multipathed disk as a /dev/dm-*
+ device.
+ 
+ [Regression potential]
+ Systems in complex setups mixing both multipathed and non-multipathed disks, 
or with particularly slow disk controllers may fail to boot or show delays in 
booting. Systems requiring a particular set of partitions to be available in 
early boot (past the typical installs on /, some may require /usr to be 
available for some daemons to load on boot) could fail to properly start up all 
the software on boot; these should be considered as regressions only if devices 
do not properly show up in 'sudo multipath -ll' output.
+ 
+ Users seeing issues should preferrably include the output of 'sudo
+ multipath -v4' to bug reports to help developers in debugging.
+ 
+ ---
+ 
+ 
  Problem Description
  ==
  non-multpath disks are classified as multipath after the multipath-tools 
package is installed.
  
  ---uname output---
  Linux uu04g1 3.16.0-21-generic #28-Ubuntu SMP Mon Oct 6 15:57:32 UTC 2014 
ppc64le ppc64le ppc64le GNU/Linux
-  
- Machine Type = Tuleta pKVM guest 
-  
+ 
+ Machine Type = Tuleta pKVM guest
+ 
  Steps to Reproduce
  =
- 1) Create a guest with an unused, non-mpath disk (not the install disk) (a 
qemu img file is fine).  
- 2) apt-get install multipath-tools.  
- 3) multipath -ll. 
+ 1) Create a guest with an unused, non-mpath disk (not the install disk) (a 
qemu img file is fine).
+ 2) apt-get install multipath-tools.
+ 3) multipath -ll.
  4)  Note that  your file backed disks are showing up as mpath disks.
-  
  
- Userspace tool common name: multipath 
- The userspace tool has the following bit modes: 64 
-  
+ Userspace tool common name: multipath
+ The userspace tool has the following bit modes: 64
+ 
  System Dump Info:
-   The system is not configured to capture a system dump.
+   The system is not configured to capture a system dump.
  
- Userspace rpm: multipath-tools 
- Userspace tool obtained from project website:  multipath-tools v0.4.9 (05/33, 
2016) 
-  
+ Userspace rpm: multipath-tools
+ Userspace tool obtained from project website:  multipath-tools v0.4.9 (05/33, 
2016)
  
  == Comment: #1 - Edward R. Cheslek eches...@us.ibm.com - ==
  root@uu04g1:~# multipath -ll
  0QEMUQEMU HARDDISK   drive-scsi0-0-1-0 dm-0 QEMU,QEMU HARDDISK
  size=20G features='0' hwhandler='0' wp=rw
  `-+- policy='round-robin 0' prio=1 status=active
-   `- 0:0:1:0 sdb 8:16 active ready running
+   `- 0:0:1:0 sdb 8:16 active ready running
  0QEMUQEMU HARDDISK   drive-scsi0-0-2-0 dm-1 QEMU,QEMU HARDDISK
  size=20G features='0' hwhandler='0' wp=rw
  `-+- policy='round-robin 0' prio=1 status=active
-   `- 0:0:2:0 sdc 8:32 active ready running
+   `- 0:0:2:0 sdc 8:32 active ready running
  root@uu04g1:~# lsblk
  NAME  MAJ:MIN RM  SIZE RO TYPE  
MOUNTPOINT
  sda 8:00   20G  0 disk
  ??sda1  8:107M  0 part
  ??sda2  8:20 19.1G  0 part  /
  ??sda3  8:30  896M  0 part  
[SWAP]
  sdb 8:16   0   20G  0 disk
  ??0QEMU\x20\x20\x20\x20QEMU\x20HARDDISK\x20\x20\x20drive-scsi0-0-1-0
-   252:00   20G  0 mpath
+   252:00   20G  0 mpath
  sdc 8:32   0   20G  0 disk
  ??0QEMU\x20\x20\x20\x20QEMU\x20HARDDISK\x20\x20\x20drive-scsi0-0-2-0
-   252:10   20G  0 mpath
+   252:10   20G  0 mpath
  root@uu04g1:~#
  root@uu04g1:~# lsscsi
  [0:0:0:0]diskQEMU QEMU HARDDISK2.0.  /dev/sda
  [0:0:1:0]diskQEMU QEMU HARDDISK2.0.  /dev/sdb
  [0:0:2:0]diskQEMU QEMU HARDDISK2.0.  /dev/sdc
  
  == Comment: #2 - Edward R. Cheslek eches...@us.ibm.com - 2014-10-08 
22:27:09 ==
  This is the xml file of the affected guest.  Please note that all disks are 
file backed.
  
  root@uu04g1:~# multipath 

[Bug 1386637] Re: multipath shows non-mpath disks as being multipath

[Brian Murray]

** Package changed: ubuntu = multipath-tools (Ubuntu)

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Title:
  multipath shows non-mpath disks as being multipath

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