[9fans] Couple of Venti questions

[9fans] Couple of Venti questions

[Devon H. O'Dell]

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Well, actually, there's only one question. I'm wondering if it's
possible to, instead of configuring Venti to take snapshots of
entire filesystems at a given interval, configure Venti to take
a snapshot of a single file and only when you tell it to
yourself.

Something like:

venti/snap /path/to/some/file

would be ideal. So, does this exist already, or do I need to
write this? :)

Off topic; there's a shoe store here in Deventer called
``venti'' and it has a HUGE metal thing that says ``venti'' on
the wall. I should take a picture sometime :).

--Devon

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Re: [9fans] Couple of Venti questions

[Russ Cox]

> Well, actually, there's only one question. I'm wondering if it's
> possible to, instead of configuring Venti to take snapshots of
> entire filesystems at a given interval, configure Venti to take
> a snapshot of a single file and only when you tell it to
> yourself.

No, there isn't.  Full file system snapshots are not that
expensive.  Let yourself go.  If you're worried about particular
huge churn, you could chmod +t (or maybe +T, I forget)
certain things to exclude them from the periodic snapshots.
For example chmod +t $home/tmp, or if you're super aggressive,
chmod +t /386/bin /386/lib.

You'll find that once you've had daily snapshots of everything
around for a while you'll never want to go back to having to
explicitly ask for something to be snapshotted.

But see also vac(1).

Russ