I filed an upstream libvirt bug for the dd block size issue: https://bugzilla.redhat.com/show_bug.cgi?id=599091
** Bug watch added: Red Hat Bugzilla #599091 https://bugzilla.redhat.com/show_bug.cgi?id=599091 -- virsh save is very slow https://bugs.launchpad.net/bugs/524447 You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. Status in QEMU: Invalid Status in “qemu-kvm” package in Ubuntu: Confirmed Bug description: As reported here: http://www.redhat.com/archives/libvir-list/2009-December/msg00203.html "virsh save" is very slow - it writes the image at around 1MB/sec on my test system. (I think I saw a bug report for this issue on Fedora's bugzilla, but I can't find it now...) Confirmed under Karmic.
