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Re: [dm-devel] Too many paths from multipath?



Ok that seems right, but on my case I have 4connections per HBA total of 8per Lun

The info I got regarding zoning is that each HBA is connected/zoned to only one Storage controller
So that would make 2connections per Lun

What I suspect is that the Fabric here is made of 4switchs and that makes 4x plus. The SAN people just configured it with a generic "big" fabric zoning just one connection. but Linux shoes 4. could this be the reason?

Jakov Sosic wrote:
On Wed, 2009-12-02 at 16:45 +0100, Jose Nuno Neto wrote:

I have 2 HBAs connected to one LUN on a Hitachi Storage. Only two connections have been zoned

If one connection goes to one switch, and that switch is connected to
two controllers on the storage, then you'll see two paths on that HBA in
your host. If you have two HBA's and second is connected to second
switch, which is also connected to two controllers of the stroage, then
you'll see 4 of them.

That is the situation in my company. It goes like this:


             ________Hitachi controller0
            /
HOST----switch0
            \
             \_______Hitachi controller1






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