From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <3A070E00.C4FE25F9@dell.com> Date: Mon, 06 Nov 2000 14:01:04 -0600 From: Michael E Brown MIME-Version: 1.0 Subject: Re: [linux-lvm] scsi/fc multipath failover patch References: <200011061933.eA6JXtF17815@webber.adilger.net> Content-Transfer-Encoding: 7bit Sender: owner-linux-lvm Errors-To: owner-linux-lvm List-Id: Content-Type: text/plain; charset="us-ascii" To: Andreas Dilger Cc: Jos Visser , linux-lvm@msede.com Andreas Dilger wrote: > Joe Visser writes: > > Does anyone know whether md, lvm and likeminded drivers are resistant > > against this alternate pathing solution? I mean, when you connect a SCSI > > (or FC disk for that matter) through two controllers, any application or > > driver that does scanning of the attached disks and partitions will > > encounter the same disk/partitions twice. > > Heinz has said that in the upcoming 0.9 release of LVM, there will be Is there cvs repository or some such thing so that us mere mortals can test/contribute to upcoming release? I've a lab full of machines that can be used for the cause, several fibre-channel devices, lots of scsi external storage, and lots of other neat toys I can do horrible experiments on without whining about lost data. > > PVIDs (actually DCE UUIDs) so LVM will remove duplicate PVs from its > lists. This can happen for reasons other than multipath, such as > /dev/md and /dev/{hd,sd} access to the same PV. > > Cheers, Andreas > -- > Andreas Dilger \ "If a man ate a pound of pasta and a pound of antipasto, > \ would they cancel out, leaving him still hungry?" > http://www-mddsp.enel.ucalgary.ca/People/adilger/ -- Dogbert