NFS Question

[Ken Ambrose]

On Fri, 30 Aug 2002 bscott at ntisys.com wrote:

>   Just FYI, IBM's EVMS and Sistina's LVM are two completely different
> implementations of similar things.  Both support snapshots, but only at the
> device level -- you have to mount the snapshot as another filesystem to
> access it.  Not at all like the NetApp mechanism.

Alas, all too true.  I would give "the pound of flesh closest my heart"
for a functioning NetApp-like snapshot mechanism.  Ironically, there -is-
a closed-source one, and there were the beginnings of an open-source one.
See http://mountainviewdata.com and http://sourceforge.net/projects/snapfs/
respectively.  Note that you can barely see didly-squat on Sourceforge,
but the (very, very alpha) code can be downloaded via sourceforge's CVS
server.  It is unmaintained, and MVD probably would have taken it off
long ago if they could have (it was originally their code).  And, no, it
doesn't compile on 2.4.  *sigh*

-Ken