Refactor umount() (#2516)

archinstall/lib/disk/device_handler.py

@@ -695,28 +695,21 @@ class DeviceHandler(object):
 			raise DiskError(f'Could not mount {dev_path}: {command}\n{err.message}')
 
 	def umount(self, mountpoint: Path, recursive: bool = False):
-		try:
 		lsblk_info = get_lsblk_info(mountpoint)
-		except SysCallError as ex:
-			# this could happen if before partitioning the device contained 3 partitions
-			# and after partitioning only 2 partitions were created, then the modifications object
-			# will have a reference to /dev/sX3 which is being tried to umount here now
-			if 'not a block device' in ex.message:
-				return
-			raise ex
 
-		if len(lsblk_info.mountpoints) > 0:
+		if not lsblk_info.mountpoints:
+			return
+
 		debug(f'Partition {mountpoint} is currently mounted at: {[str(m) for m in lsblk_info.mountpoints]}')
 
-			for mountpoint in lsblk_info.mountpoints:
+		cmd = ['umount']
-				debug(f'Unmounting mountpoint: {mountpoint}')
-
-				command = 'umount'
 
 		if recursive:
-					command += ' -R'
+			cmd.append('-R')
 
-				SysCommand(f'{command} {mountpoint}')
+		for path in lsblk_info.mountpoints:
+			debug(f'Unmounting mountpoint: {path}')
+			SysCommand(cmd + [str(path)])
 
 	def detect_pre_mounted_mods(self, base_mountpoint: Path) -> List[DeviceModification]:
 		part_mods: Dict[Path, List[PartitionModification]] = {}