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checkpoint/restore: add --manage-cgroups-mode ignore

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- add the new mode and document it;
 - slightly improve the --help output;
 - slightly simplify the parsing code.

Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
This commit is contained in:
Kir Kolyshkin
2022-08-01 16:02:48 -07:00
parent ff3b4f3bb4
commit 212d25e853
4 changed files with 17 additions and 15 deletions
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checkpoint.go
+14 -12
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@@ -38,7 +38,7 @@ checkpointed.`,
cli.StringFlag{Name: "page-server", Value: "", Usage: "ADDRESS:PORT of the page server"},
cli.BoolFlag{Name: "file-locks", Usage: "handle file locks, for safety"},
cli.BoolFlag{Name: "pre-dump", Usage: "dump container's memory information only, leave the container running after this"},
cli.StringFlag{Name: "manage-cgroups-mode", Value: "", Usage: "cgroups mode: 'soft' (default), 'full' and 'strict'"},
cli.StringFlag{Name: "manage-cgroups-mode", Value: "", Usage: "cgroups mode: soft|full|strict|ignore (default: soft)"},
cli.StringSliceFlag{Name: "empty-ns", Usage: "create a namespace, but don't restore its properties"},
cli.BoolFlag{Name: "auto-dedup", Usage: "enable auto deduplication of memory images"},
},
@@ -149,17 +149,19 @@ func criuOptions(context *cli.Context) (*libcontainer.CriuOpts, error) {
}
}
if cgOpt := context.String("manage-cgroups-mode"); cgOpt != "" {
switch cgOpt {
case "soft":
opts.ManageCgroupsMode = criu.CriuCgMode_SOFT
case "full":
opts.ManageCgroupsMode = criu.CriuCgMode_FULL
case "strict":
opts.ManageCgroupsMode = criu.CriuCgMode_STRICT
default:
return nil, errors.New("Invalid manage cgroups mode")
}
switch context.String("manage-cgroups-mode") {
case "":
// do nothing
case "soft":
opts.ManageCgroupsMode = criu.CriuCgMode_SOFT
case "full":
opts.ManageCgroupsMode = criu.CriuCgMode_FULL
case "strict":
opts.ManageCgroupsMode = criu.CriuCgMode_STRICT
case "ignore":
opts.ManageCgroupsMode = criu.CriuCgMode_IGNORE
default:
return nil, errors.New("Invalid manage-cgroups-mode value")
}
// runc doesn't manage network devices and their configuration.