Restore UFS snapshot

[pete wright]

On 5/26/07, Svein Halvor Halvorsen <svein.h at lvor.halvorsen.cc> wrote:
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> pete wright wrote:
> > hmm...i'm still a little confused as to where you are going.  there
> > are three main way's i've used snapshot's in large (~1PB)
> > environments, two of which are applicable to you i believe:
>
> *snip dump/restore plug*
>
>
> Yes, I understand how I could use dump/restore. But forget about all
> this. Forget about my reasons for wanting it.
>
> All I want to know is whether or not there exists a tool that will
> let me rollback a snapshot without mounting it, dumping it, or
> anything like that. Just by flipping some bits in the superblock, or
> some other small changes to an (unmounted) file system. Something
> really easy. No extra disk, no excessive copying, no nothing. Just a
> simple
>
> # umount
> # snap_rollback
> *wait 10 seconds*
> # mount
>
> .. and I'm set.
>
> I believe it should be possible. And if nothing like that exists, it
> should be made. I could look into it, but I would have to learn a
> lot more about the inner workings of the file system first.
>
>

not that i know of, and IMHO for good reason.  i would not trust
anything of that nature with data that i deemed important enough to
snap shot in the first place.

-pete

-- 
~~o0OO0o~~
Pete Wright
www.nycbug.org
NYC's *BSD User Group