Re: fast approximate file count

[Oleg Drokin <green@namesys.com>]

Hello!

On Fri, Sep 20, 2002 at 10:36:23PM -0700, Jeff Breidenbach wrote:
> While "find $DIR | wc -l" works and is quite accurate, it can take an
> enormously long time. While "df" and dividing by a guesstimate of
> the average file size is fast, I wonder if there is a way to do
> better. Is there a prgram that can take advantage of reiserfs
> specific metadata and quickly compute an approximate file count?
> Especially if the directory tree structure is very shallow?

If you never/very seldom delete files,
you can create new file (any size), execute ls -i on it, like this:
 549661 z

This number is OID, oid grows up in case that there were no deletions/gaps
from previous deletions in OID.
OID is total number of objects on FS in this case.

Counting is started from 2 for root dir. objects are files and directories.

Bye,
    Oleg