/
disk.go
65 lines (61 loc) · 1.7 KB
/
disk.go
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package vz
import (
"context"
"errors"
"fmt"
"os"
"path/filepath"
"github.com/docker/go-units"
"github.com/lima-vm/lima/pkg/driver"
"github.com/lima-vm/lima/pkg/fileutils"
"github.com/lima-vm/lima/pkg/iso9660util"
"github.com/lima-vm/lima/pkg/nativeimgutil"
"github.com/lima-vm/lima/pkg/store/filenames"
)
func EnsureDisk(ctx context.Context, driver *driver.BaseDriver) error {
diffDisk := filepath.Join(driver.Instance.Dir, filenames.DiffDisk)
if _, err := os.Stat(diffDisk); err == nil || !errors.Is(err, os.ErrNotExist) {
// disk is already ensured
return err
}
baseDisk := filepath.Join(driver.Instance.Dir, filenames.BaseDisk)
if _, err := os.Stat(baseDisk); errors.Is(err, os.ErrNotExist) {
var ensuredBaseDisk bool
errs := make([]error, len(driver.Yaml.Images))
for i, f := range driver.Yaml.Images {
if _, err := fileutils.DownloadFile(ctx, baseDisk, f.File, true, "the image", *driver.Yaml.Arch); err != nil {
errs[i] = err
continue
}
ensuredBaseDisk = true
break
}
if !ensuredBaseDisk {
return fileutils.Errors(errs)
}
}
diskSize, _ := units.RAMInBytes(*driver.Yaml.Disk)
if diskSize == 0 {
return nil
}
isBaseDiskISO, err := iso9660util.IsISO9660(baseDisk)
if err != nil {
return err
}
if isBaseDiskISO {
// Create an empty data volume (sparse)
diffDiskF, err := os.Create(diffDisk)
if err != nil {
return err
}
if err = nativeimgutil.MakeSparse(diffDiskF, diskSize); err != nil {
diffDiskF.Close()
return err
}
return diffDiskF.Close()
}
if err = nativeimgutil.ConvertToRaw(baseDisk, diffDisk, &diskSize, false); err != nil {
return fmt.Errorf("failed to convert %q to a raw disk %q: %w", baseDisk, diffDisk, err)
}
return err
}