About disk I/O load distribution
We recommend equally distributing the processing of RiOS data store disk I/O processes by thread. This example shows how to allocate four threads and eight RiOS data store disks. Allocating two disks for each thread equally distributes the processing.
<disk type='file' device='disk'>
<driver name='qemu' type='qcow2' iothread='1' cache='none' io='threads'/>
<source file='/work/quicksilver/storage/oak-cs737-vsh1-segstore1.img'/>
<target dev='vdb' bus='virtio'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x08' function='0x0'/>
</disk>