This bug was fixed in the package curtin - 0.1.0~bzr425-0ubuntu1~16.04.1

---------------
curtin (0.1.0~bzr425-0ubuntu1~16.04.1) xenial-proposed; urgency=medium

  [ Scott Moser ]
  * debian/new-upstream-snapshot: add writing of debian changelog entries.

  [ Ryan Harper ]
  * New upstream snapshot.
    - unittest,tox.ini: catch and fix issue with trusty-level mock of open
    - block/mdadm: add option to ignore mdadm_assemble errors  (LP: #1618429)
    - curtin/doc: overhaul curtin documentation for readthedocs.org
      (LP: #1351085)
    - curtin.util: re-add support for RunInChroot  (LP: #1617375)
    - curtin/net: overhaul of eni rendering to handle mixed ipv4/ipv6 configs
    - curtin.block: refactor clear_holders logic into block.clear_holders and
      cli cmd
    - curtin.apply_net should exit non-zero upon exception.  (LP: #1615780)
    - apt: fix bug in disable_suites if sources.list line is blank.
    - vmtests: disable Wily in vmtests
    - Fix the unittests for test_apt_source.
    - get CURTIN_VMTEST_PARALLEL shown correctly in jenkins-runner output
    - fix vmtest check_file_strippedline to strip lines before comparing
    - fix whitespace damage in tests/vmtests/__init__.py
    - fix dpkg-reconfigure when debconf_selections was provided.
      (LP: #1609614)
    - fix apt tests on non-intel arch
    - Add apt features to curtin.  (LP: #1574113)
    - vmtest: easier use of parallel and controlling timeouts
    - mkfs.vfat: add force flag for formating whole disks  (LP: #1597923)
    - block.mkfs: fix sectorsize flag  (LP: #1597522)
    - block_meta: cleanup use of sys_block_path and handle cciss knames
      (LP: #1562249)
    - block.get_blockdev_sector_size: handle _lsblock multi result return
      (LP: #1598310)
    - util: add target (chroot) support to subp, add target_path helper.
    - block_meta: fallback to parted if blkid does not produce output
      (LP: #1524031)
    - commands.block_wipe:  correct default wipe mode to 'superblock'
    - tox.ini: run coverage normally rather than separately
    - move uefi boot knowledge from launch and vmtest to xkvm

 -- Ryan Harper <ryan.har...@canonical.com>  Mon, 03 Oct 2016 13:43:54
-0500

** Changed in: curtin (Ubuntu Xenial)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1562249

Title:
  Failed to deploy machine with HP Smart Array Raid 6i

Status in curtin:
  Fix Committed
Status in Landscape Server:
  Invalid
Status in MAAS:
  Invalid
Status in curtin package in Ubuntu:
  Fix Released
Status in curtin source package in Trusty:
  Confirmed
Status in curtin source package in Xenial:
  Fix Released

Bug description:
  [Impact]

   * Attempting to deploy a machine with a HP Smart Array Raid 6i fails to
     install due to Curtin miscalculating the device path to CCISS
     partitions

     Curtin has been updated to properly calculate and handle the
     different forms of the HP CCISS array devices and partition path names
     in /dev and in /sys
     
  [Test Case]

   * Install proposed curtin package and deploy Ubuntu images to a system
     with an HP Smart Array device.

     PASS: Ubuntu OS successfully installed

     FAIL: Ubuntu fails to install with error message like:

      An error occured handling 'cciss!c0d0':
      OSError - [Errno 2] No such file or directory:  '/sys/block/c0d0/holders'

  [Regression Potential]

   * The fix included changes to how curtin determines the sysfs path to
     block devices and partitions.  It's possible that these changes could
     cause working systems which currently deploy to fail to deploy.
     However, this is mitigated by the fact that only HP Smart Array devices
     have special naming scheme for partitions so it's unlikely that non-HP
     storage devices are using the kernel path /dev/cciss as a prefix.

  
  [Original Description]
  Attempting to deploy a machine with a HP Smart Array Raid 6i fails. 
Installation output contains:

  Error: Partition(s) 5 on /dev/cciss/c0d0 have been written, but we have been 
unable to inform the kernel of the change, probably because it/they are in use. 
As a result, the old partition(s) will remain in use. You should reboot now 
before making further changes.
  An error occured handling 'cciss!c0d0': OSError - [Errno 2] No such file or 
directory: '/sys/block/c0d0/holders'
  [Errno 2] No such file or directory: '/sys/block/c0d0/holders'
  Installation failed with exception: Unexpected error while running command.
  Command: ['curtin', 'block-meta', 'custom']
  Exit code: 3
  Reason: -
  Stdout: "Error: Partition(s) 5 on /dev/cciss/c0d0 have been written, but we 
have been unable to inform the kernel of the change, probably because it/they 
are in use. As a result, the old partition(s) will remain in use. You should 
reboot now before making further changes.\nAn error occured handling 
'cciss!c0d0': OSError - [Errno 2] No such file or directory: 
'/sys/block/c0d0/holders'\n[Errno 2] No such file or directory: 
'/sys/block/c0d0/holders'\n"

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