2017-11-07 13:46 GMT+03:00 Jan Hutař <jhutar@xxxxxxxxxx>: > Do you have some comparasion of IO performance on thin pool vs. qcow2 > file on fs? > I don't have actual data (i'm switched from lvm thinp is about 1-1.5 year ago. But when we test it - sometimes qcow2 gave us better performance when raw on fs and thin volume. If you increase number of running vm on the same time performance of lvm thinp lowering. > In my case each VM would have its own thin volume. I just want to > overcommit disk-space. > Yes, we do something like this, but if you lost time when thin pool has no space - all you vm stopped and you can lost you data inside vm! So overcommit and vm on thin pool is really dangerous. Vasiliy Tolstov, e-mail: v.tolstov@xxxxxxxxx _______________________________________________ libvirt-users mailing list libvirt-users@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvirt-users
