undelete

undelete

[Chris Drake]

Hi,

The most important feature of Microsofts new server file-system
announcement is the ability to easily "undelete":-
http://www.microsoft.com/windowsserver2003/evaluation/overview/technologies/storage.mspx

Could this be incorporated into reiserfs ?  (including the recovery of
overwritten files etc of course)

Kind Regards,
Chris Drake

Re: undelete

[michael chang]

On 11/3/05, Chris Drake <christopher@pobox.com> wrote:
> Hi,
>
> The most important feature of Microsofts new server file-system
> announcement is the ability to easily "undelete":-
> http://www.microsoft.com/windowsserver2003/evaluation/overview/technologies/storage.mspx
>
> Could this be incorporated into reiserfs ?  (including the recovery of
> overwritten files etc of course)

Disclaimer: I am not a Namesys staff member.

IIRC, putting this kind of thing in reiserfs (reiserfs v3) is probably
very unlikely, as it would require radical and very messy changes.

However, there is something of a discussion of sorts about a CVS- or
SVN-type plugin that may do something like this for Reiser4 - in
theory, it currently has the framework (plugin architecture) to
support this, although no one AFAIK has written and submitted code
recently for it.  (I believe someone expressed intrest in such an
idea, although I don't know if he has proceeded with it.)

That said, Reiser4 is experimental software, and shouldn't be used on
production systems, although when all is said and done (kernel
acceptance, as well as things like cryptocompress and file-as-dir [if
it comes back] and repacker, which are currently unavailable but
hopefully will be available soon) I believe Reiser4 will be a great
filesystem.

There are some recent messages in the archive (if you dare to sift
through it) that go over this sort of topic...

--
~Mike
 - Just my two cents
 - No man is an island, and no man is unable.

Re: undelete

[Hans Reiser]

Chris Drake wrote:

>Hi,
>
>The most important feature of Microsofts new server file-system
>announcement is the ability to easily "undelete":-
>http://www.microsoft.com/windowsserver2003/evaluation/overview/technologies/storage.mspx
>
>Could this be incorporated into reiserfs ?  (including the recovery of
>overwritten files etc of course)
>
>Kind Regards,
>Chris Drake
>
>
>
>  
>
well, sure it could be done and should be done.  I'll take a patch....

Re: undelete

[Giovanni A. Orlando]

Hans Reiser wrote:

Hi,

    This one the first feature I comment to Hans to be supported on 
ReiserFS.
    Of course I am speaking about 3.X ...
   
    Logically, would be convenient to become available on Reiser4.

Thanks,
Giovanni.

>Chris Drake wrote:
>
>  
>
>>Hi,
>>
>>The most important feature of Microsofts new server file-system
>>announcement is the ability to easily "undelete":-
>>http://www.microsoft.com/windowsserver2003/evaluation/overview/technologies/storage.mspx
>>
>>Could this be incorporated into reiserfs ?  (including the recovery of
>>overwritten files etc of course)
>>
>>Kind Regards,
>>Chris Drake
>>
>>
>>
>> 
>>
>>    
>>
>well, sure it could be done and should be done.  I'll take a patch....
>
>  
>


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Re: undelete

[Joachim Zobel]

Am Donnerstag, den 03.11.2005, 22:18 +1100 schrieb Chris Drake:
> The most important feature of Microsofts new server file-system
> announcement is the ability to easily "undelete":-
> http://www.microsoft.com/windowsserver2003/evaluation/overview/technologies/storage.mspx
> 
> Could this be incorporated into reiserfs ?  (including the recovery of
> overwritten files etc of course)

Are you referring to the "Volume Shadow Copy Service"? This is not a FS
feature, it is AFAIK implemented below in the "block device layer" (this
has quite shure a different name on windows). You can do the same thing
on Linux with LVM (it was however not usable with LVM2 on my system at
the beginning of the year).

A real file system undo would however be really good to have.

Sincerely,
Joachim

Re: undelete

[michael chang]

On 11/6/05, Joachim Zobel <jzobel@heute-morgen.de> wrote:
> Am Donnerstag, den 03.11.2005, 22:18 +1100 schrieb Chris Drake:
> > The most important feature of Microsofts new server file-system
> > announcement is the ability to easily "undelete":-
> > http://www.microsoft.com/windowsserver2003/evaluation/overview/technologies/storage.mspx
> >
> > Could this be incorporated into reiserfs ?  (including the recovery of
> > overwritten files etc of course)
>
> Are you referring to the "Volume Shadow Copy Service"? This is not a FS
> feature, it is AFAIK implemented below in the "block device layer" (this
> has quite shure a different name on windows). You can do the same thing
> on Linux with LVM (it was however not usable with LVM2 on my system at
> the beginning of the year).
>
> A real file system undo would however be really good to have.
>

Indeed, although I wouldn't be surprised if someone went and
complained and said this should be implemented at the VFS layer, just
like file plugins (cryptocompress and the like) and file-as-dir,
simply because somebody wanted this feature to affect all filesystems.
 (But IIRC, that already exists; pseudofilesystems allow this sorta
thing, as mentioned in a recent e-mail, provided you'd want to set
such a thing up.)

--
~Mike
 - Just my two cents
 - No man is an island, and no man is unable.