lxd/rsync.go
func rsyncLocalCopy(source string, dest string, bwlimit string) (string, error) {
	err := os.MkdirAll(dest, 0755)
	if err != nil {
		return "", err
	}

	rsyncVerbosity := "-q"
	if debug {
		rsyncVerbosity = "-vi"
	}

	if bwlimit == "" {
		bwlimit = "0"
	}

	msg, err := shared.RunCommand("rsync",
		"-a",
		"-HAX",
		"--sparse",
		"--devices",
		"--delete",
		"--checksum",
		"--numeric-ids",
		"--xattrs",
		"--bwlimit", bwlimit,
		rsyncVerbosity,
		shared.AddSlash(source),
		dest)
	if err != nil {
		runError, ok := err.(shared.RunError)
		if ok {
			exitError, ok := runError.Err.(*exec.ExitError)
			if ok {
				waitStatus := exitError.Sys().(syscall.WaitStatus)
				if waitStatus.ExitStatus() == 24 {
					return msg, nil
				}
			}
		}
		return msg, err
	}

	return msg, nil
}
func rsyncLocalCopy(source string, dest string, bwlimit string) (string, error) {
	err := os.MkdirAll(dest, 0755)
	if err != nil {
		return "", err
	}

	rsyncVerbosity := "-q"
	if debug {
		rsyncVerbosity = "-vi"
	}

	if bwlimit == "" {
		bwlimit = "0"
	}

	msg, err := shared.RunCommand("rsync",
		"-a",
		"-HAX",
		"--sparse",
		"--devices",
		"--delete",
		"--checksum",
		"--numeric-ids",
		"--xattrs",
		"--bwlimit", bwlimit,
		rsyncVerbosity,
		shared.AddSlash(source),
		dest)
	if err != nil {
		runError, ok := err.(shared.RunError)
		if ok {
			exitError, ok := runError.Err.(*exec.ExitError)
			if ok {
				waitStatus := exitError.Sys().(syscall.WaitStatus)
				if waitStatus.ExitStatus() == 24 {
					return msg, nil
				}
			}
		}
		return msg, err
	}

	return msg, nil
}
// rsyncCopy copies a directory using rsync (with the --devices option).