[Bug 1816805] Re: Cannot create cdrom device with open tray and cache option

[Thomas Huth]

** Changed in: qemu
     Assignee: John Snow (jnsnow) => (unassigned)

-- 
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1816805

Title:
  Cannot create cdrom device with open tray and cache option

Status in QEMU:
  Incomplete

Bug description:
  When trying to create cdrom device with open tray and either of
  "cache" or "discard" options specified, I get the following error:

  qemu-system-x86_64: -drive if=none,id=drive-
  ide0-0-0,readonly=on,cache=writeback,discard=unmap,throttling.iops-
  total=900: Must specify either driver or file

  This bug essentially forbids live migration of VMs with open cdrom
  trays.

  I was able to find the same bug at RedHat:
  https://bugzilla.redhat.com/show_bug.cgi?id=1338638

  The bug was encountered in versions 2.5 and 2.11.

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1816805/+subscriptions