[linux-lvm] MultiPath

[linux-lvm] MultiPath

[Ryan Frank]

Hello All!

I am running RedHat AS 2.1 2.4.9-e3custom kernel (Many reasons why so
old)... I have compiled in the the default LVM and multipath options in
the kernel.  I have also compiled in the new drivers for my FC Cards
(Qlogic 2300).  I can see all my storage... However! I cannot seem to
get the multipathing to work.  I see all 6 drives (3 from each card)...
Is there a magic trick to get the multipathing to work?  I am at a loss
here...

-- 
+----------------------------------------------------+
|Ryan Frank               Unix System Administrator  |
|Time Warner Cable        7910 Crescent Executive Dr.|
|(704) 731-3324 - phone   3rd Floor                  |
|(704) 731-1180 - fax     Charlotte, NC 28217        |
|150*143328*1 - nextel    ryan.frank@twcable.com     |
+----------------------------------------------------+

Re: [linux-lvm] MultiPath

[Andrew Patterson]

On Thu, 2003-05-22 at 15:19, Ryan Frank wrote:
> Hello All!
> 
> I am running RedHat AS 2.1 2.4.9-e3custom kernel (Many reasons why so
> old)... I have compiled in the the default LVM and multipath options in
> the kernel.  I have also compiled in the new drivers for my FC Cards
> (Qlogic 2300).  I can see all my storage... However! I cannot seem to
> get the multipathing to work.  I see all 6 drives (3 from each card)...
> Is there a magic trick to get the multipathing to work?  I am at a loss
> here...
> 

If you are using MD multipathing, you need to edit/create an
/etc/raidtab file and then run mkraid or raidstart.  You then use a
/dev/md* device to access your storage.

Andrew

> -- 
> +----------------------------------------------------+
> |Ryan Frank               Unix System Administrator  |
> |Time Warner Cable        7910 Crescent Executive Dr.|
> |(704) 731-3324 - phone   3rd Floor                  |
> |(704) 731-1180 - fax     Charlotte, NC 28217        |
> |150*143328*1 - nextel    ryan.frank@twcable.com     |
> +----------------------------------------------------+
> 
> _______________________________________________
> linux-lvm mailing list
> linux-lvm@sistina.com
> http://lists.sistina.com/mailman/listinfo/linux-lvm
> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
> 
-- 
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
   Andrew Patterson                          Voice:  (970) 898-3261
   Hewlett-Packard Company                   Email:  andrew@fc.hp.com

Re: [linux-lvm] MultiPath

[Ryan Frank]

On Thu, 2003-05-22 at 17:57, Andrew Patterson wrote:
> On Thu, 2003-05-22 at 15:19, Ryan Frank wrote:
> > Hello All!
> > 
> > I am running RedHat AS 2.1 2.4.9-e3custom kernel (Many reasons why so
> > old)... I have compiled in the the default LVM and multipath options in
> > the kernel.  I have also compiled in the new drivers for my FC Cards
> > (Qlogic 2300).  I can see all my storage... However! I cannot seem to
> > get the multipathing to work.  I see all 6 drives (3 from each card)...
> > Is there a magic trick to get the multipathing to work?  I am at a loss
> > here...
> > 
> 
> If you are using MD multipathing, you need to edit/create an
> /etc/raidtab file and then run mkraid or raidstart.  You then use a
> /dev/md* device to access your storage.
> 

I got the MD device setup in raidtab I am using the "multipath"
personality... It is not utilizing both paths though... I started a
write, then pulled the active path to simulate failure, and it just died
:) fun fun... thanks for the help!

-- 
+----------------------------------------------------+
|Ryan Frank               Unix System Administrator  |
|Time Warner Cable        7910 Crescent Executive Dr.|
|(704) 731-3324 - phone   3rd Floor                  |
|(704) 731-1180 - fax     Charlotte, NC 28217        |
|150*143328*1 - nextel    ryan.frank@twcable.com     |
+----------------------------------------------------+