[Qemu-devel] [Bug 1090600] Re: Improve error reporting when -drive format= is incorrect

[Stefan Weil]

** Changed in: qemu
     Assignee: (unassigned) => Stefan Weil (ubuntu-weilnetz)

** Changed in: qemu
       Status: New => In Progress

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https://bugs.launchpad.net/bugs/1090600

Title:
  Improve error reporting when -drive format= is incorrect

Status in QEMU:
  In Progress

Bug description:
  With qemu.git as of  e376a788ae130454ad5e797f60cb70d0308babb6

  $ qemu-img create -f raw test.raw 1M
  Formatting 'test.raw', fmt=raw size=1048576 
  $ ./x86_64-softmmu/qemu-system-x86_64 -drive file=./test.raw,format=qcow2
  qemu-system-x86_64: -drive file=./test.raw,format=qcow2: could not open disk 
image ./test.raw: Invalid argument
  $ ./x86_64-softmmu/qemu-system-x86_64 -drive file=./test.raw,format=vdi
  qemu-system-x86_64: -drive file=./test.raw,format=vdi: could not open disk 
image ./test.raw: Operation not permitted

  Ideally we'd get something like
  could not open disk image ./test.raw: not a qcow2 format file

  (this was kicking around in Fedora bugzilla for a long time at
  https://bugzilla.redhat.com/show_bug.cgi?id=556482 )

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