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Re: [linux-lvm] LVM and multiple HBA ports



Is this a multipathed device?  I first create an MD device of a
particular lun like this:
mdadm -C -f -l mp -n 1 -x 1 /dev/md0 /dev/sd<x> /dev/sd<y>

where x is channel A of the device and y is channel B.

You can then verify it by:
mdadm --detail /dev/md0

Does this help?

On Wed, 2004-04-21 at 09:04, Dan Bar Dov wrote:
> I have a problem using two (or more) ports connected to the same storage.
> 
> Linux does not identify that the two LUNs it discovers is actually the same.
> When I create a PV all is well. 
> The PV gets created and is ACTIVE. However, through the other port, the PV
> is also discovered, but is marked INACTIVE in the LVM database.
> 
> When I try to create a VG using the active path, LVM scans all PVs in order.
> If it finds the INACTIVE instance first, the VG creation fails.
> 
> I'm using LVM 1.0.3, please let mw know if such a situation (connecting
> storage through multiple ports) is handled better in another version, or
> suggest how to overcome the problem.
> 
> Thanks,
> Dan
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> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/


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