[Bug 1863710] Re: qemu 4.2 does not process discard(trim) commands

[Thomas Huth]

How did you start QEMU? Does this still happen with the latest version
of QEMU?

** Changed in: qemu
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/1863710

Title:
  qemu 4.2 does not process discard(trim) commands

Status in QEMU:
  Incomplete

Bug description:
  I'm using Arch Linux with qemu 4.2 and blktrace to monitor discard
  commands as they are sent to the hardware.  Blktrace shows nothing as
  the VM is trimming the SSDs.

  I downgraded to qemu 4.1.1 and blktrace shows lots of discard commands
  as the VM is trimming.

  Kernel version is 5.5.4.

  Attached is the libvirt xml.

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