[OpenAFS] Undelete support feedback request

[Jason Edgecombe]

I second Rodney's suggestion. Disclaimer: his office is next to mine ;)

Being able to have snapshots of a volume or multiple backups of a volume 
from different times.

I think the simplest approach would be to clone a volume and give a new 
but predictable name like vol.backup1 or vol.b20061207

I don't have a specific need for this at the moment, but it's in my 
"nice to have" category.

Jason

Rodney M Dyer wrote:
> I think it would be more interesting to pursue something like the 
> "Shadow Volume Copy Services"...
> http://technet2.microsoft.com/WindowsServer/en/library/2b0d2457-b7d8-42c3-b6c9-59c145b7765f1033.mspx?mfr=true 
>
>
> Yea I know, pie in the sky problems.
>
> Kidding aside, our upper management is really getting into the kinds 
> of services provided by companies like Xythos: 
> http://www.xythos.com/home/xythos/index.html  The services Xythos 
> provides make traditional file systems look "outdated".  However this 
> is junk to me because it's web based stuff.
>
> I'm just an old codger...  Hey you kids, get off my lawn!
>
> Rodney
>
> At 02:21 PM 12/7/2006, Jeffrey Altman wrote:
>> Jeffrey Hutzelman wrote:
>> >
>> >
>> > On Thursday, December 07, 2006 01:34:50 PM -0500 Jeffrey Altman
>> > <jaltman@secure-endpoints.com> wrote:
>> >
>> >> I would believe that what would be desired is a non-permanent delete
>> >> in the r/w volume in which the file/directory would be marked with
>> >> a new attribute that means deleted but not reclaimed.
>> >>
>> >> Files/directories would be automatically reclaimed as they bump up
>> >> against their quota.
>> >>
>> >> New RPCs would be required to support the undelete operations:
>> >>
>> >>  * purge all deleted but unclaimed files/dirs
>> >>
>> >>  * undelete the specified file/dir
>> >>
>> >>  * list files/dirs that can be undeleted
>> >
>> > Actually, we're only talking about files here.  A directory can't be
>> > deleted in the first place unless it's empty, and the undelete 
>> operation
>> > for an empty directory is the same as the directory creation 
>> operation.
>>
>> A delete operation on a directory filled with files that have been
>> deleted but not yet reclaimed needs to be marked with the new attribute.
>> Otherwise, you lose the ability to undelete the files stored within it.
>>
>> > Life gets interesting when multiple files with the same name have been
>> > deleted, but maybe you don't care about that (I would).
>>
>> Not so interesting.  The function to list the entries reports multiple
>> files with the same name.
>>
>> > I suspect that the improvement over traditional backup volumes is
>> > relatively small, and while it would be a "cool" feature, I think 
>> there
>> > are probably others on which the time would be better spent.  Buy hey,
>> > it's your time, not mine...
>>
>> I completely agree that there are many more important things for time
>> to be spent on that are causing users real problems and not just
>> inconveniences.
>>
>> Jeffrey Altman
>>
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