Re: ReiserFS patch for updating ctimes of renamed files

[Hans Reiser <reiser@namesys.com>]

Let's see what Andrew says after he reads J.W.'s reasoning.  I agree 
that reiserfs should do the same thing as the other filesystems in 
Linux, but J.W. seems to be right that they are doing the wrong thing.

Hans

Alex Adriaanse wrote:

>Hans,
>
>Yes, I agree with J.W.  However, I also think that Andrew has a good point
>in that the behavior across Linux filesystems (ReiserFS, ext2, ext3, minix,
>etc.) should be consistent.  Either they should all update ctime during
>renames, or none of them should.
>
>Anyway, I'll try to work with the GNU tar maintainer to get this problem in
>tar fixed.  It'll probably be a lot harder to fix in tar than to have
>ReiserFS update ctimes since it'll require major changes in
>the --listed-incremental snapshot files.  However, if you don't think it's a
>good idea to make these changes to ReiserFS then we'll just work on fixing
>up tar.
>
>Thanks,
>
>Alex
>
>-----Original Message-----
>From: linux-kernel-owner@vger.kernel.org
>[mailto:linux-kernel-owner@vger.kernel.org]On Behalf Of Hans Reiser
>Sent: Monday, October 13, 2003 3:46 AM
>To: Alex Adriaanse
>Cc: jw schultz; Linux Kernel Mailing List; vs@namesys.com
>Subject: Re: ReiserFS patch for updating ctimes of renamed files
>
>
>Alex, are you convinced by jw?  (I think I am.)  Would you be willing to
>submit a patch for tar instead?
>
>Hans
>
>jw schultz wrote:
>
>  
>
>>On Mon, Oct 13, 2003 at 09:49:20AM +0400, Hans Reiser wrote:
>>
>>
>>In theory it is cleaner and purer to do it the way we did. In practice,
>>
>>    
>>
>>>Alex's problem seems like a real one, and I don't know how hard it is to
>>>change tar to do the right thing.  We'll discuss it in a small seminar
>>>today.
>>>
>>>
>>>      
>>>
>>Updating ctime does seem messy and a bit irrelevant for the
>>atomic rename.  You are modifying the directories not the
>>fricken file. This isn't DOS!  But it would seem he does
>>indeed have an issue although i'm not sure what.  I've never
>>used the listed-incremental option of tar and since the
>>manpage is incomplete <rant deleted> i don't know what it
>>actually does.  However, i have found the use of ctime to be
>>terribly unreliable for file management and given what the
>>standards have to say on the issue it sounds like tar is
>>being abused or has a bug.
>>
>>
>>
>>
>>    
>>
>
>
>--
>Hans
>
>
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>


-- 
Hans