[Qemu-devel] [Bug 1819182] [NEW] info does not recognize file format of vpc with subformat=fixed

[Scott Moser]

Public bug reported:

After creating or converting an image to vpc with 'subformat=fixed'
'qemu-img info' incorrectly identifies the image as 'raw' format.

$ qemu-img --version
qemu-img version 2.11.1(Debian 1:2.11+dfsg-1ubuntu7.10)
Copyright (c) 2003-2017 Fabrice Bellard and the QEMU Project developers

$ qemu-img create -f vpc -o subformat=fixed my.vpc 2G
Formatting 'my.vpc', fmt=vpc size=2147483648 subformat=fixed

$ qemu-img info my.vpc
image: my.vpc
file format: raw
virtual size: 2.0G (2147992064 bytes)
disk size: 4.0K

$ qemu-img info -f vpc my.vpc
image: my.vpc
file format: vpc
virtual size: 2.0G (2147991552 bytes)
disk size: 4.0K

** Affects: qemu
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1819182

Title:
  info does not recognize file format of vpc with subformat=fixed

Status in QEMU:
  New

Bug description:
  After creating or converting an image to vpc with 'subformat=fixed'
  'qemu-img info' incorrectly identifies the image as 'raw' format.

  $ qemu-img --version
  qemu-img version 2.11.1(Debian 1:2.11+dfsg-1ubuntu7.10)
  Copyright (c) 2003-2017 Fabrice Bellard and the QEMU Project developers

  $ qemu-img create -f vpc -o subformat=fixed my.vpc 2G
  Formatting 'my.vpc', fmt=vpc size=2147483648 subformat=fixed

  $ qemu-img info my.vpc
  image: my.vpc
  file format: raw
  virtual size: 2.0G (2147992064 bytes)
  disk size: 4.0K

  $ qemu-img info -f vpc my.vpc
  image: my.vpc
  file format: vpc
  virtual size: 2.0G (2147991552 bytes)
  disk size: 4.0K

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