External resources
Revision as of 11:34, 17 March 2020 by Anuj.kumar (talk | contribs)
A resource is called "external", if it can't be dumped and restored without some help from the caller. Usually this means that a part of its state is out of a dumped container.
Dump
Typically external resources are just told to be such on dump. The respective option looks like --external TYPE[ID]:VAL
option, where TYPE
is resource type, ID
is resource ID and VAL
is optional argument.
Restore
Restoring external resources heavily depends on its type. Some resources can be restored by CRIU itself with the help of --external
option, some cannot. See below for further details.
Resource types
The following external resources can be checkpointed and restored:
- External bind mounts
- External mount devices
- External files
- External UNIX socket
- VETH device
- Mac-Vlan
- External net namespaces