Python PartitionedMount.cleanup方法代码示例

# 需要导入模块: from mic.utils.partitionedfs import PartitionedMount [as 别名]
# 或者: from mic.utils.partitionedfs.PartitionedMount import cleanup [as 别名]
    def do_unpack(cls, srcimg):
        srcimgsize = (misc.get_file_size(srcimg)) * 1024L * 1024L
        srcmnt = misc.mkdtemp("srcmnt")
        disk = fs_related.SparseLoopbackDisk(srcimg, srcimgsize)
        srcloop = PartitionedMount(srcmnt, skipformat = True)

        srcloop.add_disk('/dev/sdb', disk)
        srcloop.add_partition(srcimgsize/1024/1024, "/dev/sdb", "/", "ext3", boot=False)
        try:
            srcloop.mount()

        except errors.MountError:
            srcloop.cleanup()
            raise

        image = os.path.join(tempfile.mkdtemp(dir = "/var/tmp", prefix = "tmp"), "target.img")
        args = ['dd', "if=%s" % srcloop.partitions[0]['device'], "of=%s" % image]

        msger.info("`dd` image ...")
        rc = runner.show(args)
        srcloop.cleanup()
        shutil.rmtree(os.path.dirname(srcmnt), ignore_errors = True)

        if rc != 0:
            raise errors.CreatorError("Failed to dd")
        else:
            return image

# 需要导入模块: from mic.utils.partitionedfs import PartitionedMount [as 别名]
# 或者: from mic.utils.partitionedfs.PartitionedMount import cleanup [as 别名]
    def do_unpack(cls, srcimg):
        img = srcimg
        imgsize = misc.get_file_size(img) * 1024L * 1024L
        imgmnt = misc.mkdtemp()
        disk = fs_related.SparseLoopbackDisk(img, imgsize)
        imgloop = PartitionedMount(imgmnt, skipformat = True)
        imgloop.add_disk('/dev/sdb', disk)
        imgloop.add_partition(imgsize/1024/1024, "/dev/sdb", "/", "vfat", boot=False)
        try:
            imgloop.mount()
        except errors.MountError:
            imgloop.cleanup()
            raise

        # legacy LiveOS filesystem layout support, remove for F9 or F10
        if os.path.exists(imgmnt + "/squashfs.img"):
            squashimg = imgmnt + "/squashfs.img"
        else:
            squashimg = imgmnt + "/LiveOS/squashfs.img"

        tmpoutdir = misc.mkdtemp()
        # unsquashfs requires outdir mustn't exist
        shutil.rmtree(tmpoutdir, ignore_errors = True)
        misc.uncompress_squashfs(squashimg, tmpoutdir)

        try:
            # legacy LiveOS filesystem layout support, remove for F9 or F10
            if os.path.exists(tmpoutdir + "/os.img"):
                os_image = tmpoutdir + "/os.img"
            else:
                os_image = tmpoutdir + "/LiveOS/ext3fs.img"

            if not os.path.exists(os_image):
                raise errors.CreatorError("'%s' is not a valid live CD ISO : neither "
                                          "LiveOS/ext3fs.img nor os.img exist" %img)
            imgname = os.path.basename(srcimg)
            imgname = os.path.splitext(imgname)[0] + ".img"
            rtimage = os.path.join(tempfile.mkdtemp(dir = "/var/tmp", prefix = "tmp"), imgname)
            shutil.copyfile(os_image, rtimage)

        finally:
            imgloop.cleanup()
            shutil.rmtree(tmpoutdir, ignore_errors = True)
            shutil.rmtree(imgmnt, ignore_errors = True)

        return rtimage

# 需要导入模块: from mic.utils.partitionedfs import PartitionedMount [as 别名]
# 或者: from mic.utils.partitionedfs.PartitionedMount import cleanup [as 别名]

#.........这里部分代码省略.........
                        "of=" + swapfile,
                        "count=%d" % swapsizemb,
                        "bs=1M"]
                rc = runner.show(args)
                if rc:
                    raise CreatorError("Can't create swap file")
                args = ["mkswap", "-f", swapfile]
                rc = runner.show(args)
                if rc:
                    raise CreatorError("Can't mkswap on swap file")

            if homesizemb > 0:
                msger.info("Initializing persistent /home")
                homefile = usbmnt + "/LiveOS/" + homefile
                if fstype == "vfat":
                    args = ['dd',
                            "if=/dev/zero",
                            "of=" + homefile,
                            "count=%d" % homesizemb,
                            "bs=1M"]
                else:
                    args = ['dd',
                            "if=/dev/null",
                            "of=" + homefile,
                            "count=1",
                            "bs=1M",
                            "seek=%d" % homesizemb]
                rc = runner.show(args)
                if rc:
                    raise CreatorError("Can't create home file")

                mkfscmd = fs_related.find_binary_path("/sbin/mkfs." + fstype)
                if fstype == "ext2" or fstype == "ext3":
                    args = [mkfscmd, "-F", "-j", homefile]
                else:
                    args = [mkfscmd, homefile]
                rc = runner.show(args)
                if rc:
                    raise CreatorError("Can't mke2fs home file")
                if fstype == "ext2" or fstype == "ext3":
                    tune2fs = fs_related.find_binary_path("tune2fs")
                    args = [tune2fs,
                            "-c0",
                            "-i0",
                            "-ouser_xattr,acl",
                            homefile]
                    rc = runner.show(args)
                    if rc:
                        raise CreatorError("Can't tune2fs home file")

            if fstype == "vfat" or fstype == "msdos":
                syslinuxcmd = fs_related.find_binary_path("syslinux")
                syslinuxcfg = usbmnt + "/syslinux/syslinux.cfg"
                args = [syslinuxcmd,
                        "-d",
                        "syslinux",
                        usbloop.partitions[0]["device"]]

            elif fstype == "ext2" or fstype == "ext3":
                extlinuxcmd = fs_related.find_binary_path("extlinux")
                syslinuxcfg = usbmnt + "/syslinux/extlinux.conf"
                args = [extlinuxcmd,
                        "-i",
                        usbmnt + "/syslinux"]

            else:
                raise CreatorError("Invalid file system type: %s" % (fstype))

            os.unlink(usbmnt + "/syslinux/isolinux.cfg")
            fd = open(syslinuxcfg, "w")
            fd.write(text)
            fd.close()
            rc = runner.show(args)
            if rc:
                raise CreatorError("Can't install boot loader.")

        finally:
            usbloop.unmount()
            usbloop.cleanup()

        # Need to do this after image is unmounted and device mapper is closed
        msger.info("set MBR")
        mbrfile = "/usr/lib/syslinux/mbr.bin"
        if not os.path.exists(mbrfile):
            mbrfile = "/usr/share/syslinux/mbr.bin"
            if not os.path.exists(mbrfile):
                raise CreatorError("mbr.bin file didn't exist.")
        mbrsize = os.path.getsize(mbrfile)
        outimg = "%s/%s.usbimg" % (self._outdir, self.name)

        args = ['dd',
                "if=" + mbrfile,
                "of=" + outimg,
                "seek=0",
                "conv=notrunc",
                "bs=1",
                "count=%d" % (mbrsize)]
        rc = runner.show(args)
        if rc:
            raise CreatorError("Can't set MBR.")

# 需要导入模块: from mic.utils.partitionedfs import PartitionedMount [as 别名]
# 或者: from mic.utils.partitionedfs.PartitionedMount import cleanup [as 别名]

#.........这里部分代码省略.........

        self.__instimage.layout_partitions(self._ptable_format)

        self.__imgdir = self.workdir
        for disk_name, disk in self.__instimage.disks.items():
            full_path = self._full_path(self.__imgdir, disk_name, "direct")
            msger.debug("Adding disk %s as %s with size %s bytes" \
                        % (disk_name, full_path, disk['min_size']))
            disk_obj = fs_related.DiskImage(full_path, disk['min_size'])
            self.__disks[disk_name] = disk_obj
            self.__instimage.add_disk(disk_name, disk_obj)

        self.__instimage.mount()

    def install(self, repo_urls=None):
        """
        Install fs images into partitions
        """
        for disk_name, disk in self.__instimage.disks.items():
            full_path = self._full_path(self.__imgdir, disk_name, "direct")
            msger.debug("Installing disk %s as %s with size %s bytes" \
                        % (disk_name, full_path, disk['min_size']))
            self.__instimage.install(full_path)

    def configure(self, repodata = None):
        """
        Configure the system image according to kickstart.

        For now, it just prepares the image to be bootable by e.g.
        creating and installing a bootloader configuration.
        """
        source_plugin = self.get_default_source_plugin()
        if source_plugin:
            self._source_methods = pluginmgr.get_source_plugin_methods(source_plugin, disk_methods)
            for disk_name, disk in self.__instimage.disks.items():
                self._source_methods["do_install_disk"](disk, disk_name, self,
                                                        self.workdir,
                                                        self.oe_builddir,
                                                        self.bootimg_dir,
                                                        self.kernel_dir,
                                                        self.native_sysroot)

    def print_outimage_info(self):
        """
        Print the image(s) and artifacts used, for the user.
        """
        msg = "The new image(s) can be found here:\n"

        parts = self._get_parts()

        for disk_name, disk in self.__instimage.disks.items():
            full_path = self._full_path(self.__imgdir, disk_name, "direct")
            msg += '  %s\n\n' % full_path

        msg += 'The following build artifacts were used to create the image(s):\n'
        for p in parts:
            if p.get_rootfs() is None:
                continue
            if p.mountpoint == '/':
                str = ':'
            else:
                str = '["%s"]:' % p.label
            msg += '  ROOTFS_DIR%s%s\n' % (str.ljust(20), p.get_rootfs())

        msg += '  BOOTIMG_DIR:                  %s\n' % self.bootimg_dir
        msg += '  KERNEL_DIR:                   %s\n' % self.kernel_dir
        msg += '  NATIVE_SYSROOT:               %s\n' % self.native_sysroot

        msger.info(msg)

    def _get_boot_config(self):
        """
        Return the rootdev/root_part_uuid (if specified by
        --part-type)

        Assume partition order same as in wks
        """
        rootdev = None
        root_part_uuid = None
        parts = self._get_parts()
        for num, p in enumerate(parts, 1):
            if p.mountpoint == "/":
                part = ''
                if p.disk.startswith('mmcblk'):
                    part = 'p'

                if self._ptable_format == 'msdos' and num > 3:
                    rootdev = "/dev/%s%s%-d" % (p.disk, part, num + 1)
                else:
                    rootdev = "/dev/%s%s%-d" % (p.disk, part, num)
                root_part_uuid = p.part_type

        return (rootdev, root_part_uuid)

    def _unmount_instroot(self):
        if not self.__instimage is None:
            try:
                self.__instimage.cleanup()
            except MountError, err:
                msger.warning("%s" % err)

# 需要导入模块: from mic.utils.partitionedfs import PartitionedMount [as 别名]
# 或者: from mic.utils.partitionedfs.PartitionedMount import cleanup [as 别名]
    def do_chroot(cls, target, cmd=[]):
        img = target
        imgsize = misc.get_file_size(img) * 1024L * 1024L
        partedcmd = fs_related.find_binary_path("parted")
        disk = fs_related.SparseLoopbackDisk(img, imgsize)
        imgmnt = misc.mkdtemp()
        imgloop = PartitionedMount(imgmnt, skipformat = True)
        imgloop.add_disk('/dev/sdb', disk)
        img_fstype = "ext3"

        msger.info("Partition Table:")
        partnum = []
        for line in runner.outs([partedcmd, "-s", img, "print"]).splitlines():
            # no use strip to keep line output here
            if "Number" in line:
                msger.raw(line)
            if line.strip() and line.strip()[0].isdigit():
                partnum.append(line.strip()[0])
                msger.raw(line)

        rootpart = None
        if len(partnum) > 1:
            rootpart = msger.choice("please choose root partition", partnum)

        # Check the partitions from raw disk.
        # if choose root part, the mark it as mounted
        if rootpart:
            root_mounted = True
        else:
            root_mounted = False
        partition_mounts = 0
        for line in runner.outs([partedcmd,"-s",img,"unit","B","print"]).splitlines():
            line = line.strip()

            # Lines that start with number are the partitions,
            # because parted can be translated we can't refer to any text lines.
            if not line or not line[0].isdigit():
                continue

            # Some vars have extra , as list seperator.
            line = line.replace(",","")

            # Example of parted output lines that are handled:
            # Number  Start        End          Size         Type     File system     Flags
            #  1      512B         3400000511B  3400000000B  primary
            #  2      3400531968B  3656384511B  255852544B   primary  linux-swap(v1)
            #  3      3656384512B  3720347647B  63963136B    primary  fat16           boot, lba

            partition_info = re.split("\s+",line)

            size = partition_info[3].split("B")[0]

            if len(partition_info) < 6 or partition_info[5] in ["boot"]:
                # No filesystem can be found from partition line. Assuming
                # btrfs, because that is the only MeeGo fs that parted does
                # not recognize properly.
                # TODO: Can we make better assumption?
                fstype = "btrfs"
            elif partition_info[5] in ["ext2","ext3","ext4","btrfs"]:
                fstype = partition_info[5]
            elif partition_info[5] in ["fat16","fat32"]:
                fstype = "vfat"
            elif "swap" in partition_info[5]:
                fstype = "swap"
            else:
                raise errors.CreatorError("Could not recognize partition fs type '%s'." % partition_info[5])

            if rootpart and rootpart == line[0]:
                mountpoint = '/'
            elif not root_mounted and fstype in ["ext2","ext3","ext4","btrfs"]:
                # TODO: Check that this is actually the valid root partition from /etc/fstab
                mountpoint = "/"
                root_mounted = True
            elif fstype == "swap":
                mountpoint = "swap"
            else:
                # TODO: Assing better mount points for the rest of the partitions.
                partition_mounts += 1
                mountpoint = "/media/partition_%d" % partition_mounts

            if "boot" in partition_info:
                boot = True
            else:
                boot = False

            msger.verbose("Size: %s Bytes, fstype: %s, mountpoint: %s, boot: %s" % (size, fstype, mountpoint, boot))
            # TODO: add_partition should take bytes as size parameter.
            imgloop.add_partition((int)(size)/1024/1024, "/dev/sdb", mountpoint, fstype = fstype, boot = boot)

        try:
            imgloop.mount()

        except errors.MountError:
            imgloop.cleanup()
            raise

        try:
            if len(cmd) != 0:
                cmdline = ' '.join(cmd)
            else:
#.........这里部分代码省略.........

# 需要导入模块: from mic.utils.partitionedfs import PartitionedMount [as 别名]
# 或者: from mic.utils.partitionedfs.PartitionedMount import cleanup [as 别名]

#.........这里部分代码省略.........
                           "-s",
                           loopdev,
                           "set",
                           "%d" % (bootdevnum + 1),
                           "boot",
                           "on"])
        #XXX disabled return code check because parted always fails to
        #reload part table with loop devices. Annoying because we can't
        #distinguish this failure from real partition failures :-(
        if rc != 0 and 1 == 0:
            raise MountError("Unable to set bootable flag to %sp%d" \
                             % (loopdev, (bootdevnum + 1)))

        #Ensure all data is flushed to disk before doing syslinux install
        runner.quiet('sync')

        fullpathsyslinux = fs_related.find_binary_path("extlinux")
        rc = runner.show([fullpathsyslinux,
                          "-i",
                          "%s/boot/extlinux" % self._instroot])
        if rc != 0:
            raise MountError("Unable to install syslinux bootloader to %sp%d" \
                             % (loopdev, (bootdevnum + 1)))

    def _create_bootconfig(self):
        #If syslinux is available do the required configurations.
        if os.path.exists("%s/usr/share/syslinux/" % (self._instroot)) \
           and os.path.exists("%s/boot/extlinux/" % (self._instroot)):
            self._create_syslinux_config()
            self._install_syslinux()

    def _unmount_instroot(self):
        if not self.__instloop is None:
            self.__instloop.cleanup()

    def _resparse(self, size = None):
        return self.__instloop.resparse(size)

    def _stage_final_image(self):
        """Stage the final system image in _outdir.
           write meta data
        """
        self._resparse()

        if self.compress_image:
            for imgfile in os.listdir(self.__imgdir):
                if imgfile.endswith('.raw') or imgfile.endswith('bin'):
                    imgpath = os.path.join(self.__imgdir, imgfile)
                    misc.compressing(imgpath, self.compress_image)

        if self.pack_to:
            dst = os.path.join(self._outdir, self.pack_to)
            msger.info("Pack all raw images to %s" % dst)
            misc.packing(dst, self.__imgdir)
        else:
            msger.debug("moving disks to stage location")
	    for imgfile in os.listdir(self.__imgdir):
                src = os.path.join(self.__imgdir, imgfile)
                dst = os.path.join(self._outdir, imgfile)
                msger.debug("moving %s to %s" % (src,dst))
                shutil.move(src,dst)
        self._write_image_xml()

    def _write_image_xml(self):
        imgarch = "i686"
        if self.target_arch and self.target_arch.startswith("arm"):

# 需要导入模块: from mic.utils.partitionedfs import PartitionedMount [as 别名]
# 或者: from mic.utils.partitionedfs.PartitionedMount import cleanup [as 别名]

#.........这里部分代码省略.........
        syslinux_conf += "menu autoboot Starting %s...\n" % self.distro_name
        syslinux_conf += "menu hidden\n"
        syslinux_conf += "\n"
        syslinux_conf += "%s\n" % splashline
        syslinux_conf += "menu title Welcome to %s!\n" % self.distro_name
        syslinux_conf += "menu color border 0 #ffffffff #00000000\n"
        syslinux_conf += "menu color sel 7 #ffffffff #ff000000\n"
        syslinux_conf += "menu color title 0 #ffffffff #00000000\n"
        syslinux_conf += "menu color tabmsg 0 #ffffffff #00000000\n"
        syslinux_conf += "menu color unsel 0 #ffffffff #00000000\n"
        syslinux_conf += "menu color hotsel 0 #ff000000 #ffffffff\n"
        syslinux_conf += "menu color hotkey 7 #ffffffff #ff000000\n"
        syslinux_conf += "menu color timeout_msg 0 #ffffffff #00000000\n"
        syslinux_conf += "menu color timeout 0 #ffffffff #00000000\n"
        syslinux_conf += "menu color cmdline 0 #ffffffff #00000000\n"

        versions = []
        kernels = self._get_kernel_versions()
        symkern = "%s/boot/vmlinuz" % self._instroot

        if os.path.lexists(symkern):
            v = os.path.realpath(symkern).replace('%s-' % symkern, "")
            syslinux_conf += "label %s\n" % self.distro_name.lower()
            syslinux_conf += "\tmenu label %s (%s)\n" % (self.distro_name, v)
            syslinux_conf += "\tlinux ../vmlinuz\n"
            if self._ptable_format == 'msdos':
                rootstr = rootdev
            else:
                if not root_part_uuid:
                    raise MountError("Cannot find the root GPT partition UUID")
                rootstr = "PARTUUID=%s" % root_part_uuid
            syslinux_conf += "\tappend ro root=%s %s\n" % (rootstr, options)
            syslinux_conf += "\tmenu default\n"
        else:
            for kernel in kernels:
                for version in kernels[kernel]:
                    versions.append(version)

            footlabel = 0
            for v in versions:
                syslinux_conf += "label %s%d\n" \
                                 % (self.distro_name.lower(), footlabel)
                syslinux_conf += "\tmenu label %s (%s)\n" % (self.distro_name, v)
                syslinux_conf += "\tlinux ../vmlinuz-%s\n" % v
                syslinux_conf += "\tappend ro root=%s %s\n" \
                                 % (rootdev, options)
                if footlabel == 0:
                    syslinux_conf += "\tmenu default\n"
                footlabel += 1;

        msger.debug("Writing syslinux config %s/boot/extlinux/extlinux.conf" \
                    % self._instroot)
        cfg = open(self._instroot + "/boot/extlinux/extlinux.conf", "w")
        cfg.write(syslinux_conf)
        cfg.close()

    def _install_syslinux(self):
        for name in self.__disks.keys():
            loopdev = self.__disks[name].device

            # Set MBR
            mbrfile = "%s/usr/share/syslinux/" % self._instroot
            if self._ptable_format == 'gpt':
                mbrfile += "gptmbr.bin"
            else:
                mbrfile += "mbr.bin"

            msger.debug("Installing syslinux bootloader '%s' to %s" % \
                        (mbrfile, loopdev))

            rc = runner.show(['dd', 'if=%s' % mbrfile, 'of=' + loopdev])
            if rc != 0:
                raise MountError("Unable to set MBR to %s" % loopdev)


            # Ensure all data is flushed to disk before doing syslinux install
            runner.quiet('sync')

            fullpathsyslinux = fs_related.find_binary_path("extlinux")
            rc = runner.show([fullpathsyslinux,
                              "-i",
                              "%s/boot/extlinux" % self._instroot])
            if rc != 0:
                raise MountError("Unable to install syslinux bootloader to %s" \
                                 % loopdev)

    def _create_bootconfig(self):
        #If syslinux is available do the required configurations.
        if self._need_extlinux \
           and os.path.exists("%s/usr/share/syslinux/" % (self._instroot)) \
           and os.path.exists("%s/boot/extlinux/" % (self._instroot)):
            self._create_syslinux_config()
            self._install_syslinux()

    def _unmount_instroot(self):
        if not self.__instloop is None:
            try:
                self.__instloop.cleanup()
            except MountError, err:
                msger.warning("%s" % err)

# 需要导入模块: from mic.utils.partitionedfs import PartitionedMount [as 别名]
# 或者: from mic.utils.partitionedfs.PartitionedMount import cleanup [as 别名]

#.........这里部分代码省略.........
        syslinux_conf += "\n"
        syslinux_conf += "ALLOWOPTIONS 1\n"
        syslinux_conf += "SERIAL 0 115200\n"
        syslinux_conf += "\n"
        if splashline:
            syslinux_conf += "%s\n" % splashline
        syslinux_conf += "DEFAULT boot\n"
        syslinux_conf += "LABEL boot\n"

        kernel = "/vmlinuz"
        syslinux_conf += "KERNEL " + kernel + "\n"

        if self._ptable_format == 'msdos':
            rootstr = rootdev
        else:
            if not root_part_uuid:
                raise MountError("Cannot find the root GPT partition UUID")
            rootstr = "PARTUUID=%s" % root_part_uuid

        syslinux_conf += "APPEND label=boot root=%s %s\n" % (rootstr, options)

        msger.debug("Writing syslinux config %s/hdd/boot/syslinux.cfg" \
                    % self.workdir)
        cfg = open("%s/hdd/boot/syslinux.cfg" % self.workdir, "w")
        cfg.write(syslinux_conf)
        cfg.close()

    def _create_grubefi_config(self):
        hdddir = "%s/hdd/boot" % self.workdir
        rm_cmd = "rm -rf %s" % self.workdir
        exec_cmd(rm_cmd)

        install_cmd = "install -d %s/EFI/BOOT" % hdddir
        tmp = exec_cmd(install_cmd)

        splash = os.path.join(self.workdir, "/EFI/boot/splash.jpg")
        if os.path.exists(splash):
            splashline = "menu background splash.jpg"
        else:
            splashline = ""

        (rootdev, root_part_uuid) = self._get_boot_config()
        options = self.ks.handler.bootloader.appendLine

        grubefi_conf = ""
        grubefi_conf += "serial --unit=0 --speed=115200 --word=8 --parity=no --stop=1\n"
        grubefi_conf += "default=boot\n"
        timeout = kickstart.get_timeout(self.ks)
        if not timeout:
            timeout = 0
        grubefi_conf += "timeout=%s\n" % timeout
        grubefi_conf += "menuentry 'boot'{\n"

        kernel = "/vmlinuz"

        if self._ptable_format == 'msdos':
            rootstr = rootdev
        else:
            if not root_part_uuid:
                raise MountError("Cannot find the root GPT partition UUID")
            rootstr = "PARTUUID=%s" % root_part_uuid

        grubefi_conf += "linux %s root=%s rootwait %s\n" \
            % (kernel, rootstr, options)
        grubefi_conf += "}\n"
        if splashline:
            syslinux_conf += "%s\n" % splashline

        msger.debug("Writing grubefi config %s/hdd/boot/EFI/BOOT/grub.cfg" \
                        % self.workdir)
        cfg = open("%s/hdd/boot/EFI/BOOT/grub.cfg" % self.workdir, "w")
        cfg.write(grubefi_conf)
        cfg.close()

    def _install_syslinux(self):
        mbrfile = "%s/syslinux/" % self.bootimg_dir
        if self._ptable_format == 'gpt':
            mbrfile += "gptmbr.bin"
        else:
            mbrfile += "mbr.bin"

        if not os.path.exists(mbrfile):
            msger.error("Couldn't find %s.  If using the -e option, do you have the right MACHINE set in local.conf?  If not, is the bootimg_dir path correct?" % mbrfile)

        for disk_name, disk in self.__instimage.disks.items():
            full_path = self._full_path(self.__imgdir, disk_name, "direct")
            msger.debug("Installing MBR on disk %s as %s with size %s bytes" \
                            % (disk_name, full_path, disk['min_size']))

            rc = runner.show(['dd', 'if=%s' % mbrfile,
                              'of=%s' % full_path, 'conv=notrunc'])
            if rc != 0:
                raise MountError("Unable to set MBR to %s" % full_path)

    def _unmount_instroot(self):
        if not self.__instimage is None:
            try:
                self.__instimage.cleanup()
            except MountError, err:
                msger.warning("%s" % err)