Reiserfs vs ext3

Jim Richardson warlock at eskimo.com
Thu Mar 10 21:15:23 UTC 2005


On Thu, 2005-03-10 at 18:05 +0100, Andreas Happe wrote:
> On 2005-03-09, Karl Hegbloom <hegbloom at pdx.edu> wrote:
> > On Tue, 2005-03-08 at 10:54 -0500, Matthew S-H wrote:
> >> What are the differences between reiserfs and ext3?  Like, what are the 
> >> advantages and disadvantages?
> >
> > Reiserfs uses a btree (IIRC) structure to organize the directory (and
> > data?), so it's a lot faster to find a particular file in a directory
> > with many files in it --- O(log(n)), vs O(n).
> 
> tune2fs -O dir_index /dev/hda1.
> 
> enables tree structures (instead of the linked lists) for inodes.
> 

interesting, is there any data re: performance and reliability for this?
Is it reversible? and does it require any changes to boot a rootfs with
this change? 

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