Am 02.10.2012 um 11:38 schrieb Paolo Bonzini: > Il 16/09/2012 12:39, Peter Lieven ha scritto: >> >> I remember that this was broken some time ago and currently with >> qemu-kvm 1.2.0 I am still not able to use >> block migration plus xbzrle. The migration fails if both are used >> together. XBZRLE without block migration works. >> >> Can someone please advise what is the current expected behaviour? > > Block migration is broken by design. It will converge really slowly as > soon as you have real load in the VMs, and it will hamper the > convergence of RAM as well. > > Hopefully a real alternative will be in 1.3 (based on drive-mirror on > the source + an embedded NBD server running on the destination), then in > 1.4 we can reimplement the block migration monitor commands using the > alternative.
Hi Paolo, i know that block migration is not that good, but it seems that there is a bug in XBZRLE that is independent of block migration. Peter > > Paolo
