[dm-devel] Installing RHEL with single controller

[Pradipmaya Maharana]

Ok; this is what I did:

mkinitrd   /boot/initrd.final.img   2.6.18-53.el5xen   --with=dm-multipath

Changed the /boot/grub/menu.lst file to point to new initrd image file.
Reboot is fine but multipath -ll is still null. :(

What am I missing here.

Regards,
Pradipmaya.


On Thu, Feb 28, 2008 at 1:36 PM, Chandra Seetharaman
<sekharan at us.ibm.com> wrote:
> On Thu, 2008-02-28 at 12:11 -0800, malahal at us.ibm.com wrote:
> > Pradipmaya Maharana [pradipmaya at gmail.com] wrote:
> > > Multipath is getting loaded, if that is what you are wondering about.
> > > After reboot I check for multipathd status, and smod for the modules
> > > loaded, everything looks fine.
> >
> > No, I am asking if initrd image contains multipath commands. You need to
> > use cpio to extract the initrd image and see the source code to check
> > it!
> >
> > multipath has to be loaded and *run* before mounting your real root. If
> > it gets loaded after  mounting your real root, it is too late to have
> > multipath on root disk! Looks like you need to regenerate initrd with
> > multpath support.
>
> Yes, Malahal is right. You need to create initrd with multipath tools.
> You can do this by running mkinitrd with "--with=dm-multipath"
> (Follow the SLES10 installation instructions in my documentation
> http://sources.redhat.com/lvm2/wiki/MultipathUsageGuide )
>
>
> > --Malahal.
> >
> > --
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> --
>
> ----------------------------------------------------------------------
>    Chandra Seetharaman               | Be careful what you choose....
>              - sekharan at us.ibm.com   |      .......you may get it.
> ----------------------------------------------------------------------
>
>
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