+ def umount(self):
+ self.g.umount_all()
+
+ def shrink(self):
+ dev = self.g.part_to_dev(self.root)
+ parttype = self.g.part_get_parttype(dev)
+ if parttype != 'msdos':
+ raise DiskError("You have a %s partition table. "
+ "Only msdos partitions are supported" % parttype)
+
+ last_partition = self.g.part_list(dev)[-1]
+
+ if last_partition['part_num'] > 4:
+ raise DiskError("This disk contains logical partitions. "
+ "Only primary partitions are supported.")
+
+ part_dev = "%s%d" % (dev, last_partition['part_num'])
+ fs_type = self.g.vfs_type(part_dev)
+ if not re.match("ext[234]", fs_type):
+ print "Warning, don't know how to resize %s partitions" % vfs_type
+ return
+
+ self.g.e2fsck_f(part_dev)
+ self.g.resize2fs_M(part_dev)
+ output = self.g.tune2fs_l(part_dev)
+ block_size = int(filter(lambda x: x[0] == 'Block size', output)[0][1])
+ block_cnt = int(filter(lambda x: x[0] == 'Block count', output)[0][1])
+
+ sector_size = self.g.blockdev_getss(dev)
+
+ start = last_partition['part_start'] / sector_size
+ end = start + (block_size * block_cnt) / sector_size - 1
+
+
+