FALLOC
Default is extend size
Values
- FL_KEEP_SIZE
- Default is extend size
- FL_PUNCH_HOLE
- De-allocates range
- FL_NO_HIDE_STALE
- Reserved codepoint
- FL_COLLAPSE_RANGE
- Removes a range of a file without leaving a hole in the file
- FL_ZERO_RANGE
- Converts a range of file to zeros preferably without issuing data IO
- FL_INSERT_RANGE
- Inserts space within the file size without overwriting any existing data
- FL_UNSHARE_RANGE
- Unshares shared blocks within the file size without overwriting any existing data