Re: [Qemu-block] virtio-scsi and request splitting

[Paolo Bonzini]

On 01/06/2017 16:11, Peter Lieven wrote:
> Where shall I send the traces?
> 
> The output for the dd phase looks sth like this. Is this correct?
> 
> virtqueue_alloc_element 30498.707 pid=28286 elem=0x560dcca24200 sz=0xf0 
> in_num=0x1 out_num=0x36
> virtqueue_alloc_element 7.558 pid=28286 elem=0x560dcca22680 sz=0xf0 
> in_num=0x1 out_num=0x1a
> virtqueue_alloc_element 1.410 pid=28286 elem=0x560dcdf916c0 sz=0xf0 
> in_num=0x1 out_num=0x2

Yeah, I guess this is enough.  This is it:

    DEFINE_PROP_UINT32("max_sectors", VirtIOSCSI,
                       parent_obj.conf.max_sectors,
                       0xFFFF),

We could increase it now that we have support for max_xfer_len passthrough.

Paolo