// Make a boot2docker VM disk image.
func (d *Driver) generateDiskImage(size int) error {
tarBuf, err := mcnutils.MakeDiskImage(d.publicSSHKeyPath())
if err != nil {
return err
}
minSizeBytes := int64(minDiskSize) << 20 // usually won't fit in 32-bit int (max 2GB)
//Expand the initial image if needed
if bufLen := int64(tarBuf.Len()); bufLen > minSizeBytes {
bufLenMBytes := bufLen>>20 + 1
if err := prldisktool("resize",
"--hdd", d.diskPath(),
"--size", fmt.Sprintf("%d", bufLenMBytes)); err != nil {
return err
}
}
// Find hds file
hdsList, err := filepath.Glob(d.diskPath() + "/*.hds")
if err != nil {
return err
}
if len(hdsList) == 0 {
return fmt.Errorf("Could not find *.hds image in %s", d.diskPath())
}
hdsPath := hdsList[0]
log.Debugf("HDS image path: %s", hdsPath)
// Write tar to the hds file
hds, err := os.OpenFile(hdsPath, os.O_WRONLY, 0644)
if err != nil {
return err
}
defer hds.Close()
hds.Seek(0, os.SEEK_SET)
_, err = hds.Write(tarBuf.Bytes())
if err != nil {
return err
}
hds.Close()
// Convert image to expanding type and resize it
if err := prldisktool("convert", "--expanding",
"--hdd", d.diskPath()); err != nil {
return err
}
if err := prldisktool("resize",
"--hdd", d.diskPath(),
"--size", fmt.Sprintf("%d", size)); err != nil {
return err
}
return nil
}
// Make a boot2docker VM disk image.
func (d *Driver) generateDiskImage(size int) error {
log.Debugf("Creating %d MB hard disk image...", size)
tarBuf, err := mcnutils.MakeDiskImage(d.publicSSHKeyPath())
if err != nil {
return err
}
log.Debug("Calling inner createDiskImage")
return createDiskImage(d.diskPath(), size, tarBuf)
}
// Make a boot2docker VM disk image.
func (c *defaultDiskCreator) Create(size int, publicSSHKeyPath, diskPath string) error {
log.Debugf("Creating %d MB hard disk image...", size)
tarBuf, err := mcnutils.MakeDiskImage(publicSSHKeyPath)
if err != nil {
return err
}
log.Debug("Calling inner createDiskImage")
return createDiskImage(diskPath, size, tarBuf)
}
// generateDiskImage creates a small fixed vhd, put the tar in, convert to dynamic, then resize
func (d *Driver) generateDiskImage() (string, error) {
diskImage := d.ResolveStorePath("disk.vhd")
fixed := d.ResolveStorePath("fixed.vhd")
// Resizing vhds requires administrator priviledges
// incase the user is only a hyper-v admin then create the disk at the target size to avoid resizing.
isWindowsAdmin, err := isWindowsAdministrator()
if err != nil {
return "", err
}
fixedDiskSize := "10MB"
if !isWindowsAdmin {
fixedDiskSize = toMb(d.DiskSize)
}
log.Infof("Creating VHD")
if err := cmd("New-VHD", "-Path", quote(fixed), "-SizeBytes", fixedDiskSize, "-Fixed"); err != nil {
return "", err
}
tarBuf, err := mcnutils.MakeDiskImage(d.publicSSHKeyPath())
if err != nil {
return "", err
}
file, err := os.OpenFile(fixed, os.O_WRONLY, 0644)
if err != nil {
return "", err
}
defer file.Close()
file.Seek(0, os.SEEK_SET)
_, err = file.Write(tarBuf.Bytes())
if err != nil {
return "", err
}
file.Close()
if err := cmd("Convert-VHD", "-Path", quote(fixed), "-DestinationPath", quote(diskImage), "-VHDType", "Dynamic", "-DeleteSource"); err != nil {
return "", err
}
if isWindowsAdmin {
if err := cmd("Resize-VHD", "-Path", quote(diskImage), "-SizeBytes", toMb(d.DiskSize)); err != nil {
return "", err
}
}
return diskImage, nil
}
// generateDiskImage creates a small fixed vhd, put the tar in, convert to dynamic, then resize
func (d *Driver) generateDiskImage() (string, error) {
diskImage := d.ResolveStorePath("disk.vhd")
fixed := d.ResolveStorePath("fixed.vhd")
log.Infof("Creating VHD")
if err := cmd("New-VHD", "-Path", quote(fixed), "-SizeBytes", "10MB", "-Fixed"); err != nil {
return "", err
}
tarBuf, err := mcnutils.MakeDiskImage(d.publicSSHKeyPath())
if err != nil {
return "", err
}
file, err := os.OpenFile(fixed, os.O_WRONLY, 0644)
if err != nil {
return "", err
}
defer file.Close()
file.Seek(0, os.SEEK_SET)
_, err = file.Write(tarBuf.Bytes())
if err != nil {
return "", err
}
file.Close()
if err := cmd("Convert-VHD", "-Path", quote(fixed), "-DestinationPath", quote(diskImage), "-VHDType", "Dynamic"); err != nil {
return "", err
}
if err := cmd("Resize-VHD", "-Path", quote(diskImage), "-SizeBytes", toMb(d.DiskSize)); err != nil {
return "", err
}
return diskImage, nil
}