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    SubjectRe: [PATCH 000 of 5] md: Introduction
    On Mon, Jan 23, 2006 at 11:26:01AM +0100, Lars Marowsky-Bree wrote:
    > On 2006-01-23T10:44:18, Heinz Mauelshagen <mauelshagen@redhat.com> wrote:
    >
    > > > Besides, stacking between dm devices so far (ie, if I look how kpartx
    > > > does it, or LVM2 on top of MPIO etc, which works just fine) is via the
    > > > block device layer anyway - and nothing stops you from putting md on top
    > > > of LVM2 LVs either.
    > > >
    > > > I use the regularly to play with md and other stuff...
    > >
    > > Me too but for production, I want to avoid the
    > > additional stacking overhead and complexity.
    >
    > Ok, I still didn't get that. I must be slow.
    >
    > Did you implement some DM-internal stacking now to avoid the above
    > mentioned complexity?
    >
    > Otherwise, even DM-on-DM is still stacked via the block device
    > abstraction...

    No, not necessary because a single-level raid4/5 mapping will do it.
    Ie. it supports <offset> parameters in the constructor as other targets
    do as well (eg. mirror or linear).

    >
    >
    > Sincerely,
    > Lars Marowsky-Brée
    >
    > --
    > High Availability & Clustering
    > SUSE Labs, Research and Development
    > SUSE LINUX Products GmbH - A Novell Business -- Charles Darwin
    > "Ignorance more frequently begets confidence than does knowledge"

    --

    Regards,
    Heinz -- The LVM Guy --

    =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

    Heinz Mauelshagen Red Hat GmbH
    Consulting Development Engineer Am Sonnenhang 11
    Cluster and Storage Development 56242 Marienrachdorf
    Germany
    Mauelshagen@RedHat.com +49 2626 141200
    FAX 924446
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