Traditional Unix Inode Block Map

I had written this answer for a number of related questions on Quora. I think the topic is worth a small article. An inode for a file maintains the complete information about physical layout of file data. This information is stored in the form of a multi-level block map. Taking the example of a Unix... Continue Reading →

Advisory File Locking – My take on POSIX and BSD locks

I had a chance to do several Advisory File-Locking experiments on NFS and local file system.  In this article, I would like to give some insight into the concept of advisory locking and share some useful results from my tests. Some Background File Locking is generally useful in an environment where multiple applications or processes may... Continue Reading →

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