On 11/26/09 12:53 PM, "Scott Rohling" <[email protected]> wrote:

> I know we've had this discussion before.. but..  I fail to understand why
> everyone seems to find LVM reliable for everything BUT /.   I'm promised it
> will certainly fail - it's just a matter of time.  Why??   Why does the
> reliability of LVM suddenly break down when you talk about a particular
> filesystem?   I find it illogical.

It's not that LVM is unreliable for /, it's that it's a copper-plated bear
to fix when it DOES go wrong. If you have / as non-LVM, at least the system
will usually boot far enough to give you useful tools to fix the problem,
and the last thing you need when something breaks is more hassles -- the
users breathing down your neck is usually plenty.

There's also the argument that if you have done things right, then you
should never need to resize or change / -- you shouldn't be dumping stuff in
the / partition anyway because that's a guaranteed crash in the making. If
everything else is mounted from a partition, and the only thing in / is the
bare minimum, then you can pretty much replace / and everything else is just
fine. 

Mark's suggested layout is a really well-thought out way to do a
server-class system. It uses LVM where LVM makes sense, and keeps the number
of things that can make recovery a PITA to a minimum. ++good, citizen.

-- db

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