Other Linux filesystems
There are a few other filesystem options for Linux that are not well explored for PostgreSQL, some recommendations are as follows:
- JFS: Performs similar to XFS but with less CPU usage. But it is considered less stable than the recommended choices here. It's also not as well supported by mainstream Linux distributors. It's hard to tell the ordering there—is it less stable merely because it's not a mainstream choice and gets less testing as a result, or are there fewer users because of the stability issues? Regardless, JFS was never very popular, and it seems to be losing ground now.
- ReiserFS: After starting as the first journaling filesystem integrated into the Linux kernel, for some time ReiserFS was the preferred filesystem for major Linux distribution SuSE. Since SuSE abandoned it in late 2006 for ext3, ReiserFS adoption has been shrinking steadily since. At this moment the current ReiserFS v3 is considered stable, but its replacement...