On Nov 19, 2014 7:23 PM, "Dietmar Maurer" <diet...@proxmox.com> wrote: > > > AFAIK kvm live migration issues a disk flush, so that should not be a problem? > > > > Out if sync blogs do not appear during migration, they appear under normal work > > load. > > I do not really understand that. What do you mean by "Out if sync blogs do not appear during migration"?
Out of sync blocks are blocks that contain different data on two nodes. Such blocks appear when a VM just work under normal load and usually it happens for the area where VM's swap is placed. The longer VM is online, the more out of sync blocks appear. If we try to migrate such a VM online it will crash because data in VM's swap will be different after migration. Stanislav
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