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== Usage ==
== Usage ==
You would want to use page server feature when performing a [[live migration]]. In most cases, just use [[P.Haul]] which handles the details for you. Otherwise, read on.
=== Running page server ===
First, run a page server on a destination node:
[dst]# criu page-server --images-dir $DIR --port $PORT [--auto-dedup]
The options are:
; --images-dir
: A directory to write memory images to. To speed things up, you might want to use tmpfs (see [[disk-less migration]]).
; --port
: A port number to listen at.
; --auto-dedup
: Perform auto deduplication of images. Useful with iterative memory dumps.
=== criu pre-dump/dump ===
With page-server, you need to specify additional arguments to <code>criu pre-dump</code> or <code>criu dump</code> commands. They are:
; --page-server
: Send pages to a page server (rather than writing to disk files)
; --address $IPADDR
: IP address of the page server (destination host).
; --port $PORT
: Port number the page servers is listening at.
=== Video ===
To view an example video of using a page server, please go to https://asciinema.org/a/15847.
== See also ==
== See also ==