Subject: Re: Which snapshot strategy to use? was: How to capture all file system writes
To: None <tech-kern@netbsd.org>
From: gabriel rosenkoetter <gr@eclipsed.net>
List: tech-kern
Date: 10/23/2003 16:13:16
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On Thu, Oct 23, 2003 at 12:29:57PM -0400, Thor Lancelot Simon wrote:
> Christian: have you thought about how to arrange for the root FS to
> be on such a device?

Based on the horrors of encapsulating a Solaris root(+boot) disk
within Veritas VM and then trying to update Veritas, I think that,
from a practical standpoint, you probably don't ever want to do
that. Keep / a small, regular disk type. You don't really need
snapshots there, because it's really just not going to change that
much. And if you go and build a kernel that then doesn't work
properly with the block manager, you've just hosed your /.

Not saying that the theoretical case should be left open, just that
experience dictates that making your root file system fancy in some
plausibly fragile way is loading a gun and aiming it down.

--=20
gabriel rosenkoetter
gr@eclipsed.net

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