Current state of filesystem features / improvements

["Niels Dettenbach" <nd%syndicat.com@localhost>]

This seems to be a topic from time to time here.

What are the current states of (local) filesystem features for improvements 
(performance in usage and filesystem-checks).

Which features could be understand "as stable" for typical production use i.e. 
on internet-servers (webservers, DBs, mailservers, bind etc.)?

Which (ffs) features could be recommended to use (i.e. "softdeps") for 
productive environments (and especially within xen pv NetBSD guests) to improve 
performance / faster fsck?

As i used softdeps last time (2 years ago) i got some os crashes (fs errors) 
within a month.

Is there a current "roadmap" for further fs improvements (i.e. ffs improvements 
or new filesystems)? How does ffs compares to ext4 which seems a real step 
forward within the linux world - especially regarding performance.

It seems resize_ffs is the only tool to extend ffs (shrinking seems not 
possible today) - is it reliable enough for productive usage today?

Is the relative new software RAID under NetBSD reliable and performant?


Many thanks for any hint,


Niels.
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http://www.dettenbach.de


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Niels Dettenbach
http://www.syndicat.com