[PATCHv2 37/62] qemu: process: Setup disk io throttling for -blockdev

[Chun Feng Wu <wucf@xxxxxxxxxx>]

Does this libvirt throttling support “chained throttle filters” for single disk described in QEMU doc: https://github.com/qemu/qemu/blob/master/docs/throttle.txt (“The 'throttle' block filter”)