Since the tools and overall concept are still under heavy development, there are some known limitations applied, in particular only pure x86-64 environment is supported, no IA32 emulation allowed.
Synopsis
'crtools' [-c] [-s] [-f <file>] [-d] [-n] [-o <path>] [-D <path>] [-v [num]] [--help] <command> (-p|-t) <pid>
Description
'crtools' is command line utility to steer checkpoint and restore procedure.
Options
<command>::
One of the follwong commands
* 'dump'
to initiate checkpoint procedure
* 'restore'
to restore previously checkpointed processes
* 'show'
to decode binary dump files and show their contents in human
readable format
* 'check'
to test whether the kernel support is up-to-date
-c::
In case of 'show' command the dumped pages content will be shown in hex format.
-D <path>::
Use path 'path' as a base directory where to look for dump files set. This
commands allpies to any <command>.
-s::
Leave tasks in stopped state after checkpoint instead of killing them.
-f <file>::
This option is valid for 'show' command only and allows to see content of
the <file> specified.
-t <pid>::
Checkpoint the whole process tree starting from 'pid'.
-d::
Detach 'crtools' itself once restore is complete.
-n <ns>::
Checkpoint namespaces. Namespaces must be separated by comma.
We now support all namespaces -- uts, ipc, net and mnt
-o <file>::
Write logging messages to 'file'.
-v <num>::
Set logging level to 'num'. Valid options are: 0 - (silent, error messages
only), 1 - informative (default), 2 - debug messages.
Further reading
Refer to Advanced usage article for more options.