Oops, you are right the linux port of JFS dont support quota as of yet, thats on Todo list. My bad! As for Reiser, yup when it crashes it seriously burns to hades...the real culprit is Reiser needs to be in sync with its utilitie or when you run a utility check you T-O-A-S-T the install in a very big way
and making DAMN sure you got THE utility for your sub sub sub version of rieser dont always happen..... /grin
Ive been beating up on JFS last few days and I have to say so far it seems to catch every curveball I can throw. Most of the reason I went with JFS is how much sheer effort IBM and peeps have been pouring into this filesystem and some quiet statements made my Alan Cox and Linus Torvalds about JFS inclusion into the kernel... so being as this is not a do or die production machine but a test platform I use to torture and break
I just had to give it a whirl... im not done beatin up on it by any stretch but so far im reasonably impressed. I'll let ya know if I uncover any show stoppers.
Cut-Paste: JFS provides fast file system restart in the event of a system crash. Using database journaling techniques, JFS can restore a file system to a consistent state in a matter of seconds or minutes, versus hours or days with non-journaled file systems. This white paper gives an overview of the architecture, and describes design features, potential limits, and administrative utilities of the JFS technology available on developerWorks. Once a file has been successfully removed, it remains removed and will not reappear if the system crashes and is restarted.
The 900 file copy used files of 10k, 130k, and 650k in size, while the mailserver study used files from 2-8k in size. According to popular sentiment, the mailserver should have favored Reiserfilesystem heavily. This was not the case.
FS Size Build Read Update Destroy 900Copy SpdIdx Rank
ext2 402,340 1.37 57.5 58.6 3.69 .53 1.68 2nd
ext3 435,148 1.94 62.9 63.3 669.93 .56 1.01 3rd
ext3 writeback 435,148 2.28 128.43 62.77 636.43 .55 ~1.12 3rd
Reiser 419256 .11 3.72 6.27 16.37 .59 1.59 2nd
JFS 828,102 .06 3.13 4.51 10.08 .54 2.10 1st
XFS 428,924 .13 6.01 6.95 69.74 .49 1.61 2nd
End Cut-Paste:
It was a real tossup between XFS and JFS... Xfs has one known *problem* if you want to call it that: if you have a situation that requires mass write to then delete of files its really slooowww other than that its blazing fast and rockin stable....
Cheers
for me the /blush/ Coolest thing to it was the sheer Boot Sequence time...heh some days im easily amused I guess 
