The following options are available for checking Ext-2/3 file systems with fsck:
Force a complete file system check, even if the file system is already marked clean. The default is false.
Check the file system is in read-only mode. Report but do not fix errors. If the file system is mounted, this option is automatically selected. The default is false.
Check for bad blocks on the volume and mark them as busy. The default is false.
Perform a read-write check for bad blocks on the volume and mark them as busy. The default is false.