[Qemu-devel] [Bug 1470536] Re: qemu-img incorrectly prints "qemu-img: Host floppy pass-through is deprecated"

[Richard Jones]

I sent a patch to qemu-devel which should fix this.

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https://bugs.launchpad.net/bugs/1470536

Title:
  qemu-img incorrectly prints "qemu-img: Host floppy pass-through is
  deprecated"

Status in QEMU:
  New

Bug description:
  qemu-img incorrectly prints this warning when you use /dev/fd/<NN> to
  pass in file descriptors.  A simple way to demonstrate this uses bash
  process substitution, so the following will only work if you are using
  bash as your shell:

  $ qemu-img info <( cat /dev/null )
  qemu-img: Host floppy pass-through is deprecated
  Support for it will be removed in a future release.
  qemu-img: Could not open '/dev/fd/63': Could not refresh total sector count: 
Illegal seek

  The root cause is a bug in block/raw-posix.c:floppy_probe_device()
  where it thinks anything starting with /dev/fd is a floppy drive,
  which is not the case here:

  http://git.qemu.org/?p=qemu.git;a=blob;f=block/raw-
  posix.c;h=cbe6574bf4da90a124436a40422dce3667da71e6;hb=HEAD#l2425

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