Am 22.04.14 14:00, schrieb Eric Blake: > On 04/22/2014 01:47 AM, Thomas Stein wrote: >> Hello. >> >> The Changelog of qemu-2.0.0 mentioned "Live snapshot merging". Someone >> has an idea what could be ment by this? I'm asking because i'm still >> struggling with finding a reliable backup solution for running kvm >> machines. Blockcopy is my current solution. > > "Live snapshot merging" means going from a backing chain of "base <- > img" to "base" by merging the contents of img into base. Libvirt does > not yet support this action, but we are getting closer with our work on > tracking the entire backing chain in domain XML. > > Current libvirt is able to support some chain shortening operations with > older qemu: libvirt can do snapshot merging of any backing file (taking > "base <- snap1 <- snap2" to "base <- snap2" by committing snap1 into > base), as well as pulling content into the active layer (going from > "base <- snap1 <- snap2" to "base <- snap2" by pulling snap1 into > snap2). And as you mentioned, using blockcopy also allows libvirt to > pivot to a new shorter backing chain. Thanks Eric for the explanation. cheers t. _______________________________________________ libvirt-users mailing list libvirt-users@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvirt-users
