[Bug 920956] Re: Kpartx interferes with automount behaviour

[Cefn]

Hoping not to have to go back to a broken system, sorry. I missed the
chance of more debugging whilst it was still broken. Hopefully the
existence of this bug will help others realise it might be worth trying
an uninstall when encountering this error at least.

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https://bugs.launchpad.net/bugs/920956

Title:
  Kpartx interferes with automount behaviour

Status in “multipath-tools” package in Ubuntu:
  Incomplete

Bug description:
  I tried plugging in an external USB drive for the first time after
  installing kpartx and multipath-tools, expecting it to automount
  through Gnome/Nautilus to /media/ . Only after removing kpartx did the
  automount behaviour return.

  When the automount failed, it launched an error dialog reporting
  device already mounted or mount point busy. Trying to mount /dev/sdb1
  manually resulted in a similar error, although umount said /dev/sdb1
  wasn't mounted.

  Looking into DMesg I could see messages like this...

  [46092.602631] device-mapper: table: 252:2: multipath: error getting device
  [46092.602641] device-mapper: ioctl: error adding target to table

  ...which made me suspect kpartx was involved somehow.

  ProblemType: Bug
  DistroRelease: Ubuntu 11.10
  Package: kpartx (not installed)
  ProcVersionSignature: Ubuntu 3.0.0-15.25-generic-pae 3.0.13
  Uname: Linux 3.0.0-15-generic-pae i686
  ApportVersion: 1.23-0ubuntu4
  Architecture: i386
  Date: Tue Jan 24 12:28:50 2012
  EcryptfsInUse: Yes
  InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012)
  ProcEnviron:
   LANGUAGE=en_GB:en
   PATH=(custom, no user)
   LANG=en_GB.UTF-8
   SHELL=/bin/bash
  SourcePackage: multipath-tools
  UpgradeStatus: No upgrade log present (probably fresh install)

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