It does have the virtio drivers and the image file is qcow2 not raw. To narrow down the issue this is what I have done.
1) Download CentOS-7-x86_64-GenericCloud.qcow2 from centos.org. Upload to glance and while creating a volume in cinder volume.log I see 250MB/sec download speed. This is normal in our case. 2) Now boot the qcow2 using kvm/virt-manager , add packages, poweroff and upload it to glance , I see 75MB/sec download speed while creating a volume. If I do virt sparsify it then drops to 30MB/sec. Not sure why I am seeing this behaviour. Thanks Paras. On Wed, Aug 2, 2017 at 2:25 AM, Van Leeuwen, Robert <rovanleeu...@ebay.com> wrote: > >> how do we install virtio drivers if its missing? How do I verify it on > the centos cloud image if its there? > > > > >Unless it’s a very very ancient unsupported version of centos the virt-io > drivers will be in the kernel package. > > >Do a lsmod and look for virtio to check if it is loaded. > > > > Forgot to mention: I do not think this will have anything to do with the > upload speed to cinder even if it is not there. > > > > Cheers, > > Robert van Leeuwen >
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