Thanks for the quick response. It is working fine without the LVM. It is just the snapshot which makes the things slow. For instance, take a snapshot of an LV that's running a DomU -- after that point on, the load inside that DomU will start to increase until the snapshot is removed. Same is with KVM. The only difference without hypervisor is, it is not terribly slow but still lags, like, you get 15MB/s after snapshot and ~90-100MB/s without snapshot being on the same volume! Even SSH becomes slow, output freezes and you get sudden outbursts after a few seconds. As for the reason of copying big chunks out of LVs -- it is simple -- copy on write magic as short term image backup strategy! But I realized that the magic with LVM comes with a price and that is I/O latency ;) _______________________________________________ linux-lvm mailing list linux-lvm@redhat.com https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
