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Re: Where does LVM store its data?

On Mon, Dec 12, 2005 at 12:17:04PM -0500, Roberto C. Sanchez wrote:
> hendrik@topoi.pooq.com wrote:
> > Where does LVM store its data -- where it identifies
> > where its logical partitions are.  Can I take a volume
> > that's managed by LVM and physiclaly carry it from one
> > machine to another, and expect the other machine to
> > understand it (assuming its kernel contains LVM support,
> > and assuming the partitions aren't split across physical
> > volumes, of course?)
> > 
> > Actually, I suppose I'm asking about LVM2, just in case
> > there is a significant difference.
> > 
> > -- hendrik
> > 
> > 
> > 
> The data is in /etc/lvm.  Maybe this HOWTO will help:
> http://tldp.org/HOWTO/LVM-HOWTO/recipemovevgtonewsys.html

I have a machine with several Debian systems on it -- one
that's stable, one that's tracking etch.  Depending on how
critical the applications we need are, we boot one or the other.
Would each one end up with its own /etc/lvm file?  Would they
have to be carefully synchronized?  Or would each one create
its own by running vgscan to examine the physical volumes at
boot time?  In which case the physical volumes must be marked
somehow.  How?

-- hendrik

> -- 
> Roberto C. Sanchez
> http://familiasanchez.net/~roberto

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