@Daixiwen I hadn't considered others (I guess because ext3 worked so well before). I looked at the "make menuconfig - filesystems" for uClinux and it has JFS support, but not logfs.
I found a good paper from someone who experimented with JSF -
www.linux.com/archive/feed/119025 And it seems it could do the trick. I recompiled and booted the Cyclone II Eval Board with JFS support and I can see that the jfs support is there when I do a "ps -a"
16 S 0K 0K 0.0 jfsIO
17 S 0K 0K 0.0 jfsCommit
18 S 0K 0K 0.0 jfsSync
I've got to get the jfs support Utilities onto my CentOS 5.5 development laptop so I can format a disk. (I just pulled something off the web on how to use the CentOSPlus Repository (I'm a big novice at that kind of stuff).
I at least need "jfs_fsck" utility for my uClinux (so I need to figure that one out).
ANYONE Interested in this or have any Instructions or Advice let me know.