[geeks] Versioning FIlesystem

[KRM]

I don't know of any such filesystems under linux, but it sounds like a 
useful concept.  How does this work under VMS?  How many versions does 
it keep around?  How is it managed?

Thanks,
/KRM

David de Gruyl wrote:

> This is a somewhat esoteric question, as I have no plans to change 
> over to a versioning filesystem.  But when other users are involved it 
> could be very useful to have a "undelete" function, and I have found 
> version tracking to be quite useful, especially for configuration files.
>
> On VMS systems, the filesystem keeps old copies of files around for 
> recovery.  THis is a circular number, with a per file (i think) 
> configuration, so that only a maximum of n copies of a file are ever 
> around.
>
> I am interested if anything like this exists for UNIX based OSes.  I 
> know that SCO has a versioning option for their filesystem, but I am 
> unaware of anything like this for the BSDs or even for linux, although 
> it looks like something may exist.
>
> David