Category Archives: file system

UFS file system space allocation policy

Users coming from other systems don't usually know it (and probably don't care, in today's environment of multi-TB drives), but UFS has a rather interesting approach to space allocation which is different from the "usual suspects" like ext2/3, NTFS and FAT(32). Though it sometimes feels "interesting" in the sense of the Chinese proverb, it's time-tested to work.

I'm talking about clustering, blocks and fragments.