[linux-lvm] Misleading documentation
mauelshagen at redhat.com
Thu Sep 21 09:42:28 UTC 2006
On Wed, Sep 20, 2006 at 07:41:45AM -0500, Les Mikesell wrote:
> On Wed, 2006-09-20 at 06:40, Heinz Mauelshagen wrote:
> > > >This is my biggest beef with LVM - why doesn't *any* of the
> > > >documentation point this out? There are very few good reasons to use LVM
> > > >without RAID, and "ignorance" certainly isn't among them. I don't see
> > > >any mention of RAID or disk failures in the manual pages or in the HOWTO.
> > >
> > > Mirroring should be dealt with in LVM itself, by mapping more PEs on
> > > physical seperate PVs to each LE. From the little information I've seen
> > > about the new LVM mirroring, it seems that the mirrors are defined on LV
> > > level instead of LE/PE. But after some JFGI sessions nothing really
> > > enlightening has shown up.
> > LVM2 does mirror by grouping multiple (hidden) logical volumes
> > into a mirror set.
> Where would I find example commands to add a mirror, check
> the mirroring status, break it, reuse the other half, etc.?
'man lvcreate' to start with.
> Is it possible to mirror a snapshot instead of the changing
> Les Mikesell
> lesmikesell at gmail.com
Heinz -- The LVM Guy --
Heinz Mauelshagen Red Hat GmbH
Consulting Development Engineer Am Sonnenhang 11
Storage Development 56242 Marienrachdorf
Mauelshagen at RedHat.com PHONE +49 171 7803392
FAX +49 2626 924446
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