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[Andy Whitcroft <apw@xxxxxxxxxxxxx>]

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

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

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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 Xenial:
  Fix Committed

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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