support resize GuestOS disk

Signed-off-by: Songpon Srisawai <songpon.ssw@gmail.com>

Author: songponssw

cmd/limactl/edit.go

@@ -157,6 +157,14 @@ func editAction(cmd *cobra.Command, args []string) error {
 	if err != nil {
 		return err
 	}
+
+  // Apply config from .ymal to store.instance
+  inst, err = store.Inspect(inst.Name)
+
+	if err := inst.ResizeGuestOSDisk(); err != nil {
+		return err
+	}
+
 	return instance.Start(ctx, inst, "", false)
 }
 

pkg/store/instance.go

@@ -9,6 +9,7 @@ import (
 	"fmt"
 	"io"
 	"os"
+	"os/exec"
 	"path/filepath"
 	"runtime"
 	"strconv"
@@ -131,6 +132,7 @@ func Inspect(instName string) (*Instance, error) {
 	}
 	disk, err := units.RAMInBytes(*y.Disk)
 	if err == nil {
+		// logrus.Infof("Inst:%s changing size %d to %d \n", inst.Name, inst.Disk, disk)
 		inst.Disk = disk
 	}
 	inst.AdditionalDisks = y.AdditionalDisks
@@ -437,3 +439,25 @@ func (inst *Instance) Unprotect() error {
 	inst.Protected = false
 	return nil
 }
+
+func (inst *Instance) ResizeGuestOSDisk() error {
+	fName := filepath.Join(inst.Dir, filenames.DiffDisk)
+
+	cmd := exec.Command("limactl", "disk", "add", inst.Name, "--filename", fName)
+	if err := cmd.Run(); err != nil {
+		logrus.Fatalf("Failed to add disk: %v", err)
+	}
+
+	cmd = exec.Command("limactl", "disk", "resize", inst.Name, "--size", string(units.BytesSize(float64(inst.Disk))))
+	if err := cmd.Run(); err != nil {
+		logrus.Fatalf("Failed to resize disk: %v", err)
+	}
+
+	cmd = exec.Command("limactl", "disk", "delete", inst.Name)
+	if err := cmd.Run(); err != nil {
+		logrus.Fatalf("Failed to remove disk: %v", err)
+	}
+
+	logrus.Infof("Edit GuestOS size to %s", units.BytesSize(float64(inst.Disk)))
+	return nil
+}