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[Launchpad Bug Tracker <1371634@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package curtin - 0.1.0~bzr213-0ubuntu1

---------------
curtin (0.1.0~bzr213-0ubuntu1) wily; urgency=medium

  * New upstream snapshot.
    * retry apt-get update to avoid transient failures (LP: #1403133)
    * detect and handle multipath devices (LP: #1371634)
    * udevadm settle before unmounting target's /dev (LP: #1462139)
    * doc/ improved developer doc and tools using maas images for test
    * use --no-nvram option to grub-install if available (LP: #1311827)

 -- Scott Moser <smoser@xxxxxxxxxx>  Fri, 05 Jun 2015 15:06:31 -0400

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

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https://bugs.launchpad.net/bugs/1371634

Title:
  block devices appear twice

Status in curtin package in Ubuntu:
  Fix Released
Status in linux package in Ubuntu:
  Invalid
Status in multipath-tools package in Ubuntu:
  Confirmed

Bug description:
  $ sudo blkid
  /dev/sr0: LABEL="Ubuntu-Server 14.04 LTS ppc64el" TYPE="iso9660"
  /dev/sda2: UUID="795a6e14-ea4e-4718-9e98-c6df3696920c" TYPE="ext4"
  /dev/sda3: UUID="0a91d81f-6a16-4b96-a92c-11ca8bdc4bf4" TYPE="swap"
  /dev/sdb2: UUID="1d14c1f3-716f-4fb8-9070-d321b39ffcb3" TYPE="ext4"
  /dev/sdb3: UUID="9c228177-d65c-4d19-a462-db1891e9781e" TYPE="swap"
  /dev/sdg2: UUID="795a6e14-ea4e-4718-9e98-c6df3696920c" TYPE="ext4"
  /dev/sdg3: UUID="0a91d81f-6a16-4b96-a92c-11ca8bdc4bf4" TYPE="swap"
  /dev/sdh2: UUID="1d14c1f3-716f-4fb8-9070-d321b39ffcb3" TYPE="ext4"
  /dev/sdh3: UUID="9c228177-d65c-4d19-a462-db1891e9781e" TYPE="swap"

  I'm not sure what exactly those block devices are (as in if they're
  raided in hardware or they actually represent physical spinning
  disks).  But I do know that writing data to sda causes that data to be
  readable from sdg.

  The same is true:
   sda -> sdg
   sdb -> sdh

  That is what causes those UUIDs to be similar.  Everything is
  functional, you just have to know that if your root device is /dev/sdg
  that you should probably not write data to /dev/sda thinking you can
  use it as a disk.

  Related bugs:
   * bug 1432062: multipath-tools-boot: support booting without user_friendly_names on devices with spaces in identifiers 

  
  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-35-generic 3.13.0-35.62
  ProcVersionSignature: Ubuntu 3.13.0-35.62-generic 3.13.11.6
  Uname: Linux 3.13.0-35-generic ppc64le
  AlsaDevices: Error: command ['ls', '-l', '/dev/snd/'] failed with exit code 2: ls: cannot access /dev/snd/: No such file or directory
  AplayDevices: Error: [Errno 2] No such file or directory: 'aplay'
  ApportVersion: 2.14.1-0ubuntu3.4
  Architecture: ppc64el
  ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord'
  CRDA: Error: [Errno 2] No such file or directory: 'iw'
  CurrentDmesg: [   88.736220] init: plymouth-upstart-bridge main process ended, respawning
  Date: Fri Sep 19 14:31:20 2014
  HibernationDevice: RESUME=UUID=9c228177-d65c-4d19-a462-db1891e9781e
  Lsusb:
   Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
   Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  ProcEnviron:
   TERM=screen
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 radeondrmfb
  ProcKernelCmdLine: root=UUID=1d14c1f3-716f-4fb8-9070-d321b39ffcb3 ro console=hvc0 BOOTIF=01-6c-ae-8b-6a-a0-88 quiet
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-35-generic N/A
   linux-backports-modules-3.13.0-35-generic  N/A
   linux-firmware                             1.127.6
  RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)

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