From: Jakub Narebski <jnareb@gmail.com>
Date: Tue, 19 Jun 2007 16:52:22 GMT
Subject: Re: Versioning file system
Message-ID: <f591k5$odb$2@sea.gmane.org>
In-Reply-To: <6E9A6F9E-8948-40F2-9129-1F1491D49D83@mac.com>

Kyle Moffett wrote:
> On Jun 18, 2007, at 13:56:05, Bryan Henderson wrote:

>>> The question remains is where to implement versioning: directly in  
>>> individual filesystems or in the vfs code so all filesystems can  
>>> use it?
>>
>> Or not in the kernel at all.  I've been doing versioning of the  
>> types I described for years with user space code and I don't  
>> remember feeling that I compromised in order not to involve the  
>> kernel.
>>
>> Of course, if you want to do it with snapshots and COW, you'll have  
>> to ask where in the kernel to put that, but that's not a file  
>> versioning question; it's the larger snapshot question.
> 
> What I think would be particularly interesting in this domain is  
> something similar in concept to GIT, except in a file-system
[cut]

How it relates to ext3cow versioning (snapshotting) filesystem,
for example? ext3cow assumes linear history, which simplifies things
a bit.

-- 
Jakub Narebski
Warsaw, Poland
ShadeHawk on #git