/usr/bin/xfs_repair: invalid option -- '-' Usage: xfs_repair [options] device Options: -f The device is a file -L Force log zeroing. Do this as a last resort. -l logdev Specifies the device where the external log resides. -m maxmem Maximum amount of memory to be used in megabytes. -n No modify mode, just checks the filesystem for damage. (Cannot be used together with -e.) -P Disables prefetching. -r rtdev Specifies the device where the realtime section resides. -v Verbose output. -c subopts Change filesystem parameters - use xfs_admin. -o subopts Override default behaviour, refer to man page. -t interval Reporting interval in seconds. -d Repair dangerously. -e Exit with a non-zero code if any errors were repaired. (Cannot be used together with -n.) -V Reports version and exits.