Hi, the qcow2 volumes may be thin, sparse, full. Maybe the fs is slow, so while the image does cow allocations, the performance degrades? Try to make a full qcow2 image by:
qemu-img create -o preallocation=full -f qcow2 And check again. ср, 7 сент. 2022 г., 16:26 Mevludin Blazevic <[email protected]>: > Hi all, > > some of our users have reported that after they uploaded QCOW2 templates > to our ACS environment and started a VM from the template, the VMs ran > very slow. In contrast, VMs installed directly in ACS using ISOs for > example are very fast. I wonder if something in the upload view was > misconfigured by the users. > > We are using KVM and in the upload view we can choose Root disk > controller, OS Type and other options like enabling HVM. Any ideas? > > Best Regards > > Mevludin > >
