Dual-Phase File System Checker Patent Published Online

A U.S. patent for a dual-phase file system checker was published online on May 26, 2015, for a system that validates file systems quickly with minimum disruption. The patent, filed on October 27, 2008, by Garrett Arthur Kajmowicz and Richard Jernigan, is assigned to NetApp, Inc. The dual-phase file system checker validates a node without needing to validate referenced data associated with downstream nodes, allowing for quick and efficient validation with minimal disruption to external devices and users.

Key Takeaways:

• The dual-phase file system checker is a tool that validates file systems quickly with minimum disruption.
• The system uses a dual-phase procedure to validate nodes, first validating metadata and then validating one or more downstream nodes as necessary.
• The validation process allows for completion of file system validation quickly and with minimal disruption for external devices and users of the file system.
• Operating a file system checker to validate multiple nodes in parallel contributes to the quick and efficient validation process.
• The system prevents external devices and users from accessing a node during its validation and unlocks access once the validation is complete.

Statistics:

• The patent was filed on October 27, 2008.
• The patent was published online on May 26, 2015.
• The dual-phase file system checker uses a dual-phase procedure to validate nodes, with the first phase validating metadata and the second phase validating downstream nodes as necessary.

Sources:

• Kajmowicz, Garrett Arthur; Jernigan, Richard. Dual-Phase File System Checker. U.S. Patent Number 9043288, filed October 27, 2008, and published online on May 26, 2015. Patent URL: http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=9043288.PN.&OS=PN/9043288RS=PN/9043288