On Thu, Feb 23, 2012 at 07:58:11AM +0000, David Holland wrote: > On Wed, Feb 22, 2012 at 08:17:15AM -0600, David Young wrote: > > On Wed, Feb 22, 2012 at 01:42:45PM +0100, Manuel Wiesinger wrote: > > > *) > > > What is it good for? The only practical use I can imagine are > > > backups on thin clients, which operate without a hard disk. But this > > > is clearly far-fetched, in my eyes. > > > > It's good for writing checkpoints of a tmpfs to non-volatile (NV) > > storage in an embedded system where writing to the NV storage is costly > > (it wears out, or it is slow, or both). When you have a snapshot, you > > can stream it to NV storage using pax(1). This is the best practical > > way that I can think of in NetBSD at this time. > > other than, say, chfs or lfs?
Is CHFS really suitable for CompactFlash? Is LFS even usable? > That sounds like a horrible hack, anyhow, and prone to dying horribly > if you crash or lose power in the middle of a writeback. (plus you'd > want to use rsync to transfer, or so I'd think, or rewriting > unmodified blocks will burn write cycles faster than not bothering to > do anything special.) I agree that whatever you have in mind sounds like a horrible hack. :-) Dave -- David Young dyo...@pobox.com Urbana, IL (217) 721-9981