NAME¶
lxc-checkpoint - checkpoint a running container (not implemented yet)
SYNOPSIS¶
lxc-checkpoint --statefile=FILE
--statefd=FD --name=NAME [
-k|-p ]
DESCRIPTION¶
lxc-checkpoint is a command to checkpoint the specified container
NAME and dumps its state into the file
FILE. If the option
--kill is specified, the application running in the container will
terminate after the checkpoint just before resuming its execution. If the
option
--pause is specified, the application will be stopped after the
checkpoint just before resuming execution. The command
lxc-unfreeze
will resume its execution.
CHECKPOINT OPTIONS¶
- -S, --statefile=FILE
- write the state of the container in this FILE. This
option is exclusive with --statefd below.
- -d, --statefd=FD
- write the state of the container in this FD file
descriptor. This option is exclusive with above --statefile.
- -k,--kill
- Kill container processes after checkpoint. the processes
are sent a SIGKILL signal.
This option is mutually exclusive with the following --pause
option.
- -p,--pause
- Pause container processes after checkpoint. The container
will be stopped until you resume it. This option is mutually exclusive
with previously mentionned --kill option.
COMMON OPTIONS¶
These options are common to most of lxc commands.
- -?, -h, --help
- Print a longer usage message than normal.
- --usage
- Give the usage message
- -q, --quiet
- mute on
- -o, --logfile=FILE
- Output to an alternate log FILE. The default is no
log.
- -l, --logpriority=LEVEL
- Set log priority to LEVEL. The default log priority
is ERROR. Possible values are : FATAL, CRIT, WARN, ERROR, NOTICE, INFO,
DEBUG.
Note that this option is setting the priority of the events log in the
alternate log file. It do not have effect on the ERROR events log on
stderr.
- -n, --name=NAME
- Use container identifier NAME. The container
identifier format is an alphanumeric string.
EXAMPLES¶
To start a new container 123 computing decimals of pi
lxc-execute -n 123 -- pi1 -d 500000
lxc-execute --name=123 -- pi1 -d 500000
to checkpoint the same container in
dump-death mode
lxc-checkpoint -n 123 -S /share/123/chkpt1 -k
lxc-checkpoint --name=123 -S /share/123/chkpt1 -k
to checkpoint the same container and
pause it
lxc-checkpoint -n 123 -S /share/123/chkpt1 -p
lxc-checkpoint --name=123 -S /share/123/chkpt1 -p
NOTES¶
Actually, this command does not operate. Its description helps to define a CLI
api for future Checkpoint / Restart solution
SEE ALSO¶
lxc(1),
lxc-create(1),
lxc-destroy(1),
lxc-start(1),
lxc-stop(1),
lxc-execute(1),
lxc-kill(1),
lxc-console(1),
lxc-monitor(1),
lxc-wait(1),
lxc-cgroup(1),
lxc-ls(1),
lxc-ps(1),
lxc-info(1),
lxc-freeze(1),
lxc-unfreeze(1),
lxc-attach(1),
lxc.conf(5)
AUTHOR¶
Daniel Lezcano <daniel.lezcano@free.fr>