From mboxrd@z Thu Jan  1 00:00:00 1970
From: Hans Reiser <reiser@namesys.com>
Subject: Re: Reiserfs with Samba vs NetApp Filer
Date: Mon, 14 Oct 2002 14:48:36 +0400
Message-ID: <3DAAA104.7040305@namesys.com>
References: <20021012150028.G14731@vestdata.no> <200210121600.39712.bofh@coker.com.au> <3DA89A37.2070801@namesys.com> <20021012222950.GK3045@clusterfs.com> <3DA8CAF5.7050203@namesys.com> <20021013063809.GL3045@clusterfs.com> <3DA97993.4090403@namesys.com> <20021013154645.GM3045@clusterfs.com> <20021013181003.D24037@vestdata.no> <3DA9A128.5000206@namesys.com> <20021014035050.GO3045@clusterfs.com>
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To: Andreas Dilger <adilger@clusterfs.com>
Cc: =?windows-1252?Q?Ragnar_=3F?= <reiserfs@ragnark.vestdata.no>, Russell Coker <bofh@coker.com.au>, reiserfs-list@namesys.com

Andreas Dilger wrote:

>On Oct 13, 2002  20:36 +0400, Hans Reiser wrote:
>  
>
>>Andreas, very briefly, you want to find things in reiserfs by their 
>>keys, and you have no need for any directory entries at all, and having 
>>those directory entries will add substantial overhead.  Your metadata 
>>manager can probably track references, and if so there is no need for 
>>the FS to track it.
>>    
>>
>
>On the storage target (OST), we don't really need directories at all.
>The obdfilter uses a 64-bit object number (generated by the OST itself)
>to refer to "files" it is storing, so as long as the reiserfs keys fit
>into 64 bits, having a very efficient lookup method would be ideal.
>
>The metadata server (MDS) of course must handle directories as a normal
>filesystem does, because it is in charge of presenting a normal filesystem
>heirarchy to applications.
>
>Cheers, Andreas
>--
>Andreas Dilger
>http://www-mddsp.enel.ucalgary.ca/People/adilger/
>http://sourceforge.net/projects/ext2resize/
>
>
>
>  
>
Well, if you decide you want to do a serious integration of reiserfs and 
your product, let us know.  Using directories on the OST would not be a 
serious integration.

Hans