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DragonFly BSD

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description DragonFly BSD Overview

DragonFly BSD is a free and open-source Unix-like operating system forked from FreeBSD in 2003 by developer Matthew Dillon. It is distinguished by its decentralized kernel architecture and the HAMMER and HAMMER2 file systems, which are designed to provide clustering, snapshots, and continuous availability. The project targets servers and high-performance computing environments, with an emphasis on scalability and advanced file-system features. It is developed by a small independent community coordinated through mailing lists and a central repository.

help DragonFly BSD FAQ

Why was DragonFly BSD forked from FreeBSD?

Matthew Dillon started DragonFly in 2003 from the FreeBSD 4.8 codebase after disagreeing with the direction and performance of FreeBSD 5. The new project pursued a different approach to symmetric multiprocessing and kernel concurrency.

What is special about DragonFly BSD's HAMMER2 file system?

HAMMER2 supports features such as snapshots, checksumming, compression, and multiple pseudo-filesystems within a volume. It became DragonFly BSD's default file system with the 5.2 release in 2018.

Can DragonFly BSD run FreeBSD software?

Many Unix applications can be compiled or installed through DragonFly's dports packaging system, which is derived from FreeBSD ports. Kernel modules and low-level FreeBSD-specific binaries are not automatically interchangeable because the operating systems have diverged since 2003.

What hardware can run DragonFly BSD?

Modern DragonFly BSD releases primarily target 64-bit x86 computers, commonly labeled x86_64 or amd64. Hardware support is narrower than Linux or FreeBSD, so network, graphics, and storage-controller compatibility should be checked before installation.

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