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DISKROASTER(8) Multithreaded Disk Testing Utility DISKROASTER(8) NAME diskroaster - multithreaded disk testing utility that writes and veri- fies data on a raw disk device SYNOPSIS diskroaster [OPTIONS] DISK DESCRIPTION diskroaster is a multithreaded disk testing utility designed to stress- test hard drives and SSDs. It divides the disk into sections and writes data in parallel using multiple worker threads, then verifies the writ- ten data block-by-block. It is useful for burn-in testing, quality control, or diagnosing disk reliability. OPTIONS -h Print help and exit. -w <workers> Number of parallel worker threads. Default: 4. -n <passes> Number of write+verify passes to perform. Default: 1. -b <blocksize> Block size for write operations. Default: 4096 bytes. Supports k or m suffixes (e.g., 64k, 1m, 32m). -z Write zero-filled blocks instead of random data. EXAMPLES Run 8 parallel workers, writing 32MB zero-filled blocks to /dev/ada1 and verifying them: diskroaster -w 8 -b 32m -z /dev/ada1 OUTPUT AND VERIFICATION Each worker operates on a separate section of the disk. After writing, it reads back the data and verifies it block by block. Any mismatches or read errors will be reported. WARNINGS • This tool overwrites all data on the specified disk. • Be absolutely sure the target (e.g., /dev/ada1) is not your system disk or a mounted volume. • diskroaster allocates one memory buffer per worker thread. Total memory usage is approximately: memory_used = num_workers block_size Using many threads with a large block size can cause high memory con- sumption and may lead to out-of-memory (OOM) errors. • Root privileges are required to access raw block devices. BUILDING To build and install: make && make install Tested on Linux and FreeBSD using standard POSIX make. AUTHOR Pavel Golubinskiy SEE ALSO dd(1), smartctl(8) v1.1.0 June 2025 DISKROASTER(8)
NAME | SYNOPSIS | DESCRIPTION | OPTIONS | EXAMPLES | OUTPUT AND VERIFICATION | WARNINGS | BUILDING | AUTHOR | SEE ALSO
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