Re: [ovirt-users] VM resource allocation and IO Threads

On Mon, Oct 30, 2017 at 6:16 PM, Martin Polednik <mpoledni(a)redhat.com&gt; wrote: [snip] Thanks for sharing your experience, Darrell. I'm testing some VMs with Oracle RDBMS where I configured 3 disks with virtio-scsi and now I have assigned 3 IO threads. Let's see the numbers. In the mean time I verified you have to deactivate/activate the disks in the guest, otherwise you do get 3 SCSI controllers, but all the 3 disks are bound to the first one (scsi0-0-0-0). Now instead on hypervisor I correctly get this with dumpxml: # virsh -r dumpxml my_guest | grep scsi <target dev='sda' bus='scsi'/> <alias name='scsi0-0-0-0'/> <target dev='sdb' bus='scsi'/> <alias name='scsi1-0-0-0'/> <target dev='sdc' bus='scsi'/> <alias name='scsi2-0-0-0'/> <controller type='scsi' index='0' model='virtio-scsi'> <alias name='scsi0'/> <controller type='scsi' index='1' model='virtio-scsi'> <alias name='scsi1'/> <controller type='scsi' index='2' model='virtio-scsi'> <alias name='scsi2'/> # Martin, I have not understood when you write about "if you have multiple storage devices across different NUMA nodes." Can you elaborate a bit or point to any documentation link? Thanks, Gianluca