[Bug 1155403] Re: virtio cdrom detected as hard disk

[Paolo Bonzini]

> The media argument seems a perfectly natural
> way to select between the two.

Then how do you distinguish between a virtio-scsi and a virtio-blk hard
disk?  These may even require changes to the guest, since one becomes
/dev/vda and the other becomes /dev/sda.

virtio-scsi will grow more and more functionality, while virtio-blk will
likely remain a secondary choice for performance or backwards-
compatibility.

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https://bugs.launchpad.net/bugs/1155403

Title:
  virtio cdrom detected as hard disk

Status in QEMU:
  Invalid
Status in “debian-installer” package in Ubuntu:
  New
Status in “qemu” package in Ubuntu:
  Invalid

Bug description:
  Trying to install Ubuntu or Debian using virtio to emulate the cdrom
  fails.  This appears to be due to the drive appearing to be a hard
  disk, rather than a cdrom, despite the media=cdrom argument to qemu.

  I'm not sure if this is a bug in qemu, or the kernel virtio driver?

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