[ovirt-users] Re: [BULK] Re: very very bad iscsi performance

Thank you for the analysis. I have some further comments: First off, filebench pre-writes the files before doing oltp benchmarks, so I dont think the thin provisioning is at play here. I will double check this, but if you dont hear otherwise, please presume that is the case :) Secondly, I am surprised at your recommendation to use virtio instead of virtio-scsi. since the writeup for virtio-scsi claims it has equivalent performance in general, and adds better scaling https://www.ovirt.org/develop/release-management/features/storage/virtio-... As far as your suggestion for using multiple disks for scaling higher: We are using an SSD. Isnt the whole advantage of using SSD drives, that you can get the IOP/s performance of 10 drives, out of a single drive? We certainly get that using it natively, outside of a VM. SO it would be nice to see performance approaching that within an ovirt VM.