Il 04/10/2013 09:07, Alexey Kardashevskiy ha scritto: > On 10/04/2013 05:05 PM, Paolo Bonzini wrote: >> Il 04/10/2013 08:22, Alexey Kardashevskiy ha scritto: >>> >>> btw I tried "discard=on" as you described (with if=virtio) and received >>> an error: >>> [root@localhost ~]# fstrim -v / >>> fstrim: /: FITRIM ioctl failed: Operation not supported >>> >>> In my case if=virtio means virtio-blk. If I use virtio-scsi or ibmvscsi, >>> fstrim works just fine but failing virtio-blk bothers me a bit as we >>> might have a bug in ppc64, do not we? (we == ppc64 folks, of course :) ) >>> >> >> No, virtio-blk does not support trim. > > So the example was broken or if=virtio uses virtio-scsi (instead of > virtio-blk) on x86?
It was broken. IDE works, as well as any SCSI HBA (including USB storage). Paolo
