[linux-lvm] LVM in Dual Path SAN Environment
Heinz J . Mauelshagen
mauelshagen at sistina.com
Wed Sep 11 05:47:06 UTC 2002
On Wed, Sep 11, 2002 at 11:39:32AM +0200, Andreas G. Schindler wrote:
> A Question to the LVM Guy(s):
> We would like to use Linux LVM to overcome the fact, Linux doesn't
> currently support Dual-Path access to SAN (Fibre-Channel) units.
> Rumors are, LVM is able to detect multiple paths to a PV (in my case
> a SAN SCSI LUN) and will rearrange it to one single PV.
> As far as i see, this should solve the problem during regular operation
> (i.e. both paths to the SAN active). But what about the really interesting
> case of failure on one link? If this is the currently 'active' link (that
> one, still in t LVM's PV list), we need a failover and rearrangement
> of the PV list on the fly.
> Does this work ??
Not so far. We want to have multipathing with failover support
in LVM2 this year.
> Many thanks in advance
> Regards, Andreas
> Dr. Andreas G. Schindler c/o Alpha Zero One Computersysteme GmbH
> schindler at az1.de Frankfurter Str. 141, D-63303 Dreieich
> Tel +49 6103 57187 21 Germany
> linux-lvm mailing list
> linux-lvm at sistina.com
> read the LVM HOW-TO at http://www.sistina.com/lvm/Pages/howto.html
Heinz -- The LVM Guy --
*** Software bugs are stupid.
Nevertheless it needs not so stupid people to solve them ***
Heinz Mauelshagen Sistina Software Inc.
Senior Consultant/Developer Am Sonnenhang 11
Mauelshagen at Sistina.com +49 2626 141200
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