libct/cg/sd/v2: add IOWeight property support

Signed-off-by: Kir Kolyshkin <[email protected]>
opencontainers · Apr 19, 2023 · c1aaf2a · c1aaf2a
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diff --git a/docs/systemd.md b/docs/systemd.md
@@ -86,6 +86,7 @@ The following tables summarize which properties are translated.
 | memory.reservation      | MemoryLow             |                     |
 | memory.swap             | MemorySwapMax         |                     |
 | cpu.shares              | CPUWeight             |                     |
+| blockIO.weight          | IOWeight              |                     |
 | pids.limit              | TasksMax              |                     |
 | cpu.cpus                | AllowedCPUs           | v244                |
 | cpu.mems                | AllowedMemoryNodes    | v244                |

diff --git a/libcontainer/cgroups/systemd/v2.go b/libcontainer/cgroups/systemd/v2.go
@@ -267,6 +267,13 @@ func genV2ResourcesProperties(dirPath string, r *configs.Resources, cm *dbusConn
 		return nil, err
 	}
 
+	if r.BlkioWeight != 0 {
+		v := cgroups.ConvertBlkIOToIOWeightValue(r.BlkioWeight)
+		properties = append(properties,
+			newProp("IOWeight", v))
+	}
+	// TODO: add r.BlkioWeightDevice -> newProp("IODeviceWeight", ...)
+
 	// ignore r.KernelMemory
 
 	// convert Resources.Unified map to systemd properties