From mboxrd@z Thu Jan  1 00:00:00 1970
From: Hans Reiser <reiser@namesys.com>
Subject: Re: reiser4 data journalling?
Date: Fri, 29 Aug 2003 04:21:01 +0400
Message-ID: <3F4E9C6D.2080009@namesys.com>
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To: Tom Vier <tmv@comcast.net>
Cc: Reiserfs List <reiserfs-list@namesys.com>

Tom Vier wrote:

>On Fri, Aug 29, 2003 at 12:48:36AM +0400, Hans Reiser wrote:
>  
>
>>full data journaling means that if you perform writes that are 4k or 
>>less, and page align them, they will be performed atomically. 
>>    
>>
>
>would it be much more difficult to allow non-page aligned bufs to be written
>atomically? a fully atomic fs would be very nice. otherwise, a lot of utils
>and shell builtins would have to be modded to insure page alignment. it
>would be neat if all the regular builtins (cp, mv, ln) were atomic. of
>course, even neater would be the ability to group multiple ops into one
>atomic action. (this is probably already planned - it's been a while since i
>read the reiserfs4 paper on the namesys site.)
>
>  
>
reiser4 does all this that you ask for, although the user space API is 
not yet compiling;-)

-- 
Hans