[Bug 1540660] Re: kpartx fails to add device mappings

[Mathieu Trudel-Lapierre]

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

** Changed in: multipath-tools (Ubuntu Xenial)
     Assignee: (unassigned) => Mathieu Trudel-Lapierre (mathieu-tl)

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https://bugs.launchpad.net/bugs/1540660

Title:
  kpartx fails to add device mappings

Status in multipath-tools package in Ubuntu:
  In Progress
Status in multipath-tools source package in Xenial:
  In Progress

Bug description:
  kpartx no longer adds device mappings on Xenial. As a result cloud-
  images can't be built.

  ubuntu at daily-xenial:~$ sudo kpartx -s -v -a disk.raw 
  device-mapper: reload ioctl on loop0p1 failed: No such device
  create/reload failed on loop0p1
  add map loop0p1 (0:0): 0 4192256 linear 0:0 2048
  ubuntu at daily-xenial:~$ dmesg | tail -n5
  [38760.357385] device-mapper: ioctl: error adding target to table
  [38785.021028] device-mapper: table: 252:0: linear: dm-linear: Device lookup failed
  [38785.029424] device-mapper: ioctl: error adding target to table
  [38902.641279] device-mapper: table: 252:0: linear: dm-linear: Device lookup failed
  [38902.649726] device-mapper: ioctl: error adding target to table

  ubuntu at daily-xenial:~$ dpkg-query -W kpartx
  kpartx	0.5.0-7ubuntu10

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