Il 27/02/2013 18:38, Anthony Liguori ha scritto:
> > The solution is "there is no way to override a
previously specified
> > key". Something like "-device
> > virtio-scsi-pci,num_queues=1,num_queues=2" now works, let's make it an
> > error instead.
That breaks compatibility. The above may seem silly but consider:
qemu -device virtio-scsi-pci,num_queues=1,id=foo \
-set device.foo.num_queues=2
This is more common than you would think primarily as a way to override
options that libvirt has set either via the qemu extra args tag or a
script wrapper of qemu.
"-set" could first delete a pre-existing option. We could also extend
"-set" to accept multiple values (like -set
device.foo.bar=baz,device.foo.qux=quux), which is useful also to set a
list option.
Paolo