Re:Why EXT4 ? (Score 1)

JFS on AIX has certainly been around for awhile, but it was not without problems or limitations. JFS2 is really what people use on AIX these days, and is generally a good feature-rich filesystem. But between the LVM bugs and JFS2 bugs I've encountered over the last couple years AIX is not nearly as reliable as I would have hoped. One of the more problematic features with JFS2 was the dynamic resizing, as there was a lovely bug where the resize would hang, which in turn hung all I/O to that filesystem. The only option at that point was a reboot. Needless to say, we were forced to do all resizes offline for a while (even after we'd applied the patches to fix the issue, as we simply couldn't take the chance of it happening again).