[Podman] Re: Including file system changes in container migration
On Fri, Jun 21, 2019 at 06:09:31PM +0200, Adrian Reber wrote:
One reason I am not convinced that 'diff' is the right
approach is if
only 1 byte is changed in a large file. I hope that overlay is smart
enough to only store the diff of the changed block (if that is how
overlay works). Using 'diff' probably the complete large file has to be
transferred even if only 1 byte changes.
Overlay works at the level of whole files. Layer blobs that are used
when transporting and storing images also include whole files, because
they're .tar archives.
HTH,
Nalin