DAR - Disk ARchive
concurrent disk-backed cache supporting efficient direct file I/O, transactions, and snapshots using file cloning and sparse files
A B-Tree sparse file implementation for kernel mode IOKit modules/extensions.
Release fragmented free space from a SQLite3 database by making the file sparse
Create / Resize sparse file with Node.js
BTFcreate - a test file creator for testing data storage, compression and transfer. It is a bash script to create test data with files filled random selectable printable characters or random binary data. There is a sparse file option. No limit on file size or number. Files are created in a single directory.
Preserve file sparseness while copying a file or a directory
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