Re: Strange remount behaviour with ext3-2.4-0.9.4

Kai Henningsen
2001-07-28T14:58:10Z

alan@lxorguk.ukuu.org.uk (Alan Cox) wrote on 27.07.01 in <E15QF5E-0006ZL-00@the-village.bc.nu>:

> > more-or-less need need a tree-based fs and reference counting for all
> > the magic bits). In fact, doing it as the fs layer means you could
> > have r/w snapshots with COW semantics.
>
> You dont want r/w snapshots for archiving.

Not for archiving, but when you want to run something and then throw it
away again, for example. You could do that by just holding onto a ro
snapshot and then replacing the rw tree with it later, but by having two
rw trees you don't need to stop your regular operations.

For this to really be useful, you'd want it as an inheritable per-process
thing, similar to aviro's namespace thing.

MfG Kai