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+ update dryrun
With CRIU it's possible to periodically duplicate process on another box. Requires [[Applying images]] facility.
With CRIU it's possible to periodically duplicate process on another box. Requires [[Applying images]] facility.
== Update dryrun ==
Before updating a kernel/system libs one may duplicate a system service(s) into VM with updates and check they continue to run OK. If this test passes, then the real system update can be done.