[Qemu-discuss] switch cache mod online

[Steffen Weißgerber]

Hello,

after adding a new virtual disc (rados block device) online via

echo "drive_add 0 
if=none,file=rbd:it/testsmbverwit:id=kvm,format=raw,id=virtio2" | socat - 
UNIX-CONNECT:/tmp/alv33.monitor
echo "device_add virtio-blk-pci,drive=virtio2" | socat - 
UNIX-CONNECT:/tmp/alv33.monitor

I get the info via 'info  block' that the cache mode of the new disk is 
writeback

virtio2: rbd:it/testsmbverwit:id=kvm (raw)
    Cache mode:       writeback

Is it possible to change the cache mode to writethrough online?

Regards

Steffen



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