Discard Changes

Discard Changes

[Dipl.-Ing. Michael Niederle]

Hi!

I found the item "checkpoint rollback" in the todo-list. By "checkpoint
rollback" you mean discarding all changes since a given checkpoint?

Such a feature would be *very* nice! I can't imagine that it should be very
complicated to implement, but I might be wrong.

In SIMPLUX (a live distribution) users shall have a chance to abolisch
all changes made in a session. So I would create a snapshot at each startup and
remove all checkpoints created afterwards to revert to the previous state if
user decides to do so.

Greetings, Michael

Re: Discard Changes

[Ryusuke Konishi]

Hi,
On Thu, 11 Jun 2009 08:34:13 +0200, "Dipl.-Ing. Michael Niederle" wrote:
> Hi!
> 
> I found the item "checkpoint rollback" in the todo-list. By "checkpoint
> rollback" you mean discarding all changes since a given checkpoint?

Yes, exactly.
 
> Such a feature would be *very* nice! I can't imagine that it should be very
> complicated to implement, but I might be wrong.
> 
> In SIMPLUX (a live distribution) users shall have a chance to abolisch
> all changes made in a session. So I would create a snapshot at each startup and
> remove all checkpoints created afterwards to revert to the previous state if
> user decides to do so.
> 
> Greetings, Michael

I imagine it is likely be compilcated in NILFS because a few metadata
files have no past versions in the current implementation.

Nilfs can change checkpoints to snapshots in later.  So, I think the
rollback feature should inherit this characteristics.  That is,
rollback without a prior make-snapshot operation.

Cheers,
Ryusuke Konsihi