Jeff Bonwick was a Sun Fellow at Sun Microsystems

Sun Microsystems

Sun Microsystems, Inc. was a company that sold :computers, computer components, :computer software, and :information technology services. Sun was founded on February 24, 1982...

, later a Vice President at Sun and then a Senior Software Architect at Oracle

Oracle Corporation

Oracle Corporation is an American multinational computer technology corporation that specializes in developing and marketing hardware systems and enterprise software products – particularly database management systems...

 until his departure from the company on 30 September 2010.

He led the team which developed ZFS

ZFS

In computing, ZFS is a combined file system and logical volume manager designed by Sun Microsystems. The features of ZFS include data integrity verification against data corruption modes , support for high storage capacities, integration of the concepts of filesystem and volume management,...

 for Solaris.

Notable among Bonwick's other work is the slab allocator, an object-caching kernel memory allocator, and the LZJB

LZJB

LZJB is a lossless data compression algorithm invented by Jeff Bonwick to compress crash dumps and data in ZFS. It includes a number of improvements to the LZRW1 algorithm, a member of the Lempel-Ziv family of compression algorithms.-External links:* * *...

compression algorithm.

Bonwick published a blog, which details the development of ZFS.

Publications

• The Slab allocator: an object-caching kernel memory allocator
• Magazines and Vmem: extending the Slab allocator to many CPUs and arbitrary resources
• Real-World Concurrency

Patents

• (Application) Method and system for storing a sparse file using fill counts
• (Application) Multiple replication levels with pooled devices
• (Application) Hierarchical file system naming
• (Application) Method and system for repairing partially damaged blocks
• (Application) Adaptive resilvering I/O scheduling
• (Application) Method and system for adaptive metadata replication
• (Application) Method and system for metadata-based resilvering
• (Application) Method and system for pruned resilvering using a dirty time log
• (Application) Automatic intent log testing
• (Application) Input/output priority inheritance
• (Application) Unlimited file system snapshots and clones
• Mechanism for performing polling in a system
• Method and system for allocation of file descriptors
• Automatic conversion of all-zero data storage blocks into file holes
• Method and apparatus for I/O scheduling
• Method and system for detecting and correcting data errors using data permutations
• Method and system for I/O scheduler activations
• I/O dependency graphs
• Pipelined I/O execution
• Method and apparatus for identifying tampering of data in a file system
• Method and system for data replication
• Dynamic intent log
• Method and system using checksums to repair data
• Ditto blocks