Heya, Here are some examples of live block operations (to begin with, active blockcommit) after some testing and from discussions with Eric Blake on IRC/email: http://wiki.libvirt.org/page/Live-disk-backup-with-active-blockcommit http://wiki.libvirt.org/page/Live-merge-an-entire-disk-image-chain-including... I linked the above two pages here: http://wiki.libvirt.org/page/Main_Page#Examples_of_live_block_opertaions Will try to add more examples (like blockcopy, etc) and post them for review here. If you have comments/rewording/corrections you can provide here and I can update the wiki or you can just edit the wiki yourself. PS: I wondered breifly whether to post the plain text of the wiki content to the list but decided against it to keep the email brief :-) -- /kashyap