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Update for docker checkpoint

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Signed-off-by: yuexiao-wang <wang.yuexiao@zte.com.cn>
This commit is contained in:
yuexiao-wang 2016-11-08 16:15:09 +08:00
parent 69efb4652c
commit 90ce77e46a
4 changed files with 11 additions and 10 deletions
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6
cli/command/checkpoint/create.go
View file

@ -20,7 +20,7 @@ func newCreateCommand(dockerCli *command.DockerCli) *cobra.Command {
var opts createOptions var opts createOptions
cmd := &cobra.Command{ cmd := &cobra.Command{
Use: "create CONTAINER CHECKPOINT", Use: "create [OPTIONS] CONTAINER CHECKPOINT",
Short: "Create a checkpoint from a running container", Short: "Create a checkpoint from a running container",
Args: cli.ExactArgs(2), Args: cli.ExactArgs(2),
RunE: func(cmd *cobra.Command, args []string) error { RunE: func(cmd *cobra.Command, args []string) error {
@ -31,8 +31,8 @@ func newCreateCommand(dockerCli *command.DockerCli) *cobra.Command {
} }
flags := cmd.Flags() flags := cmd.Flags()
flags.BoolVar(&opts.leaveRunning, "leave-running", false, "leave the container running after checkpoint") flags.BoolVar(&opts.leaveRunning, "leave-running", false, "Leave the container running after checkpoint")
flags.StringVarP(&opts.checkpointDir, "checkpoint-dir", "", "", "use a custom checkpoint storage directory") flags.StringVarP(&opts.checkpointDir, "checkpoint-dir", "", "", "Use a custom checkpoint storage directory")
return cmd return cmd
} }

4
cli/command/checkpoint/list.go
View file

@ -20,7 +20,7 @@ func newListCommand(dockerCli *command.DockerCli) *cobra.Command {
var opts listOptions var opts listOptions
cmd := &cobra.Command{ cmd := &cobra.Command{
Use: "ls CONTAINER", Use: "ls [OPTIONS] CONTAINER",
Aliases: []string{"list"}, Aliases: []string{"list"},
Short: "List checkpoints for a container", Short: "List checkpoints for a container",
Args: cli.ExactArgs(1), Args: cli.ExactArgs(1),
@ -30,7 +30,7 @@ func newListCommand(dockerCli *command.DockerCli) *cobra.Command {
} }
flags := cmd.Flags() flags := cmd.Flags()
flags.StringVarP(&opts.checkpointDir, "checkpoint-dir", "", "", "use a custom checkpoint storage directory") flags.StringVarP(&opts.checkpointDir, "checkpoint-dir", "", "", "Use a custom checkpoint storage directory")
return cmd return cmd

4
cli/command/checkpoint/remove.go
View file

@ -17,7 +17,7 @@ func newRemoveCommand(dockerCli *command.DockerCli) *cobra.Command {
var opts removeOptions var opts removeOptions
cmd := &cobra.Command{ cmd := &cobra.Command{
Use: "rm CONTAINER CHECKPOINT", Use: "rm [OPTIONS] CONTAINER CHECKPOINT",
Aliases: []string{"remove"}, Aliases: []string{"remove"},
Short: "Remove a checkpoint", Short: "Remove a checkpoint",
Args: cli.ExactArgs(2), Args: cli.ExactArgs(2),
@ -27,7 +27,7 @@ func newRemoveCommand(dockerCli *command.DockerCli) *cobra.Command {
} }
flags := cmd.Flags() flags := cmd.Flags()
flags.StringVarP(&opts.checkpointDir, "checkpoint-dir", "", "", "use a custom checkpoint storage directory") flags.StringVarP(&opts.checkpointDir, "checkpoint-dir", "", "", "Use a custom checkpoint storage directory")
return cmd return cmd
} }

7
experimental/checkpoint-restore.md
View file

@ -33,7 +33,7 @@ migration of a server from one machine to another. This is possible with the
current implementation, but not currently a priority (and so the workflow is current implementation, but not currently a priority (and so the workflow is
not optimized for the task). not optimized for the task).
## Using Checkpoint & Restore ## Using checkpoint & restore
A new top level command `docker checkpoint` is introduced, with three subcommands: A new top level command `docker checkpoint` is introduced, with three subcommands:
- `create` (creates a new checkpoint) - `create` (creates a new checkpoint)
@ -48,7 +48,8 @@ The options for checkpoint create:
Create a checkpoint from a running container Create a checkpoint from a running container
--leave-running=false leave the container running after checkpoint --leave-running=false Leave the container running after checkpoint
--checkpoint-dir Use a custom checkpoint storage directory
And to restore a container: And to restore a container:
@ -71,7 +72,7 @@ in between running/checkpoint/restoring you should see that the counter
increases while the process is running, stops while it's checkpointed, and increases while the process is running, stops while it's checkpointed, and
resumes from the point it left off once you restore. resumes from the point it left off once you restore.
## Current Limitation ## Current limitation
seccomp is only supported by CRIU in very up to date kernels. seccomp is only supported by CRIU in very up to date kernels.