Windows: Added support for storage-opt size

Signed-off-by: Darren Stahl <darst@microsoft.com>

daemon/graphdriver/windows/windows.go

@@ -32,12 +32,19 @@ import (
 	"github.com/docker/docker/pkg/longpath"
 	"github.com/docker/docker/pkg/reexec"
 	"github.com/docker/docker/pkg/system"
+	"github.com/docker/go-units"
 	"github.com/vbatts/tar-split/tar/storage"
 )
 
 // filterDriver is an HCSShim driver type for the Windows Filter driver.
 const filterDriver = 1
 
+var (
+	vmcomputedll            = syscall.NewLazyDLL("vmcompute.dll")
+	hcsExpandSandboxSize    = vmcomputedll.NewProc("ExpandSandboxSize")
+	hcsSandboxSizeSupported = hcsExpandSandboxSize.Find() == nil
+)
+
 // init registers the windows graph drivers to the register.
 func init() {
 	graphdriver.Register("windowsfilter", InitFilter)
@@ -118,10 +125,6 @@ func (d *Driver) Create(id, parent, mountLabel string, storageOpt map[string]str
 }
 
 func (d *Driver) create(id, parent, mountLabel string, readOnly bool, storageOpt map[string]string) error {
-	if len(storageOpt) != 0 {
-		return fmt.Errorf("--storage-opt is not supported for windows")
-	}
-
 	rPId, err := d.resolveID(parent)
 	if err != nil {
 		return err
@@ -184,6 +187,17 @@ func (d *Driver) create(id, parent, mountLabel string, readOnly bool, storageOpt
 		if err := hcsshim.CreateSandboxLayer(d.info, id, parentPath, layerChain); err != nil {
 			return err
 		}
+
+		storageOptions, err := parseStorageOpt(storageOpt)
+		if err != nil {
+			return fmt.Errorf("Failed to parse storage options - %s", err)
+		}
+
+		if hcsSandboxSizeSupported {
+			if err := hcsshim.ExpandSandboxSize(d.info, id, storageOptions.size); err != nil {
+				return err
+			}
+		}
 	}
 
 	if _, err := os.Lstat(d.dir(parent)); err != nil {
@@ -851,3 +865,27 @@ func (d *Driver) DiffGetter(id string) (graphdriver.FileGetCloser, error) {
 
 	return &fileGetCloserWithBackupPrivileges{d.dir(id)}, nil
 }
+
+type storageOptions struct {
+	size uint64
+}
+
+func parseStorageOpt(storageOpt map[string]string) (*storageOptions, error) {
+	options := storageOptions{}
+
+	// Read size to change the block device size per container.
+	for key, val := range storageOpt {
+		key := strings.ToLower(key)
+		switch key {
+		case "size":
+			size, err := units.RAMInBytes(val)
+			if err != nil {
+				return nil, err
+			}
+			options.size = uint64(size)
+		default:
+			return nil, fmt.Errorf("Unknown storage option: %s", key)
+		}
+	}
+	return &options, nil
+}

daemon/oci_windows.go

@@ -185,7 +185,6 @@ func (daemon *Daemon) createSpec(c *container.Container) (*libcontainerd.Spec, e
 		Storage: &windowsoci.Storage{
 			Bps:  &c.HostConfig.IOMaximumBandwidth,
 			Iops: &c.HostConfig.IOMaximumIOps,
-			//TODO SandboxSize: ...,
 		},
 	}
 	return (*libcontainerd.Spec)(&s), nil

docs/reference/commandline/create.md

@@ -155,7 +155,7 @@ Set storage driver options per container.
 
 This (size) will allow to set the container rootfs size to 120G at creation time. 
 User cannot pass a size less than the Default BaseFS Size. This option is only 
-available for the `devicemapper`, `btrfs`, and `zfs` graph drivers.
+available for the `devicemapper`, `btrfs`, `windowsfilter`, and `zfs` graph drivers.
 
 ### Specify isolation technology for container (--isolation)
 

docs/reference/commandline/run.md

@@ -187,7 +187,7 @@ The `-w` lets the command being executed inside directory given, here
 
 This (size) will allow to set the container rootfs size to 120G at creation time. 
 User cannot pass a size less than the Default BaseFS Size. This option is only 
-available for the `devicemapper`, `btrfs`, and `zfs` graph drivers.
+available for the `devicemapper`, `btrfs`, `windowsfilter`, and `zfs` graph drivers.
 
 ### Mount tmpfs (--tmpfs)
 

libcontainerd/client_windows.go

@@ -74,9 +74,6 @@ func (clnt *client) Create(containerID string, spec Spec, options ...CreateOptio
 			if spec.Windows.Resources.Storage.Iops != nil {
 				configuration.StorageIOPSMaximum = *spec.Windows.Resources.Storage.Iops
 			}
-			if spec.Windows.Resources.Storage.SandboxSize != nil {
-				configuration.StorageSandboxSize = *spec.Windows.Resources.Storage.SandboxSize
-			}
 		}
 	}