Mike After some testing I ended up adding a column in vcl.image table to indicate if image has virtio drivers installed. Then I changed libvirt.pm module to conditionally use virtio drivers for images with virtio drivers installed.
Thanks. On Jul 19, 2013, at 10:34 , "Waldron, Michael H" <[email protected]> wrote: > Thanks for the responses on this, I really appreciate it. > > For those that mentioned they actually installed the virtio drivers in their > images for best performance, did you also modify the libvirt.pm module to > define the VM's setting virtio for the disk and network interface types? I > noticed that it's hard-coded to always specify IDE as the disk type and a > default setting on NIC type, rather than specifying virtio. I would assume > these should be set to virtio for the drivers to actually be used. > > Mike > > Mike Waldron > Systems Specialist > ITS - Research Computing Center > University of North Carolina at Chapel Hill > > From: Waldron, Michael H > Sent: Monday, July 08, 2013 3:31 PM > To: [email protected] > Subject: VMware vs. KVM on VCL > > I'm curious to hear about people's experiences/opinions with VMware and KVM > on VCL. Up to this point, we have been using the free version of VMware ESXi, > but I've done some testing with KVM, and it seems to work well also. > > It looks like the two will co-exist well, as KVM successfully converts the > vmdk images to qcow2 format on the fly, and will even convert new images > created on KVM back to vmdk format if the repository is defined as vmdk > format. > > So I'm toying with the idea of migrating away from VMware and going to KVM, > and wanted to hear about others experiences if they've done the same, or can > compare performance between the two hypervisors. Also, if you are using KVM, > what OS are you running it on. The testing I did was with KVM running on > Fedora 16. > > Thanks, > Mike > > > Mike Waldron > Systems Specialist > ITS - Research Computing Center > University of North Carolina at Chapel Hill -- Thank you, Dmitri Chebotarov VCL Sys Eng, Engineering & Architectural Support, TSD - Ent Servers & Messaging 223 Aquia Building, Ffx, MSN: 1B5 Phone: (703) 993-6175 | Fax: (703) 993-3404
