[CentOS] lvm with iscsi devices on boot

[Ross S. W. Walker]

Raja Subramanian wrote:

> Hi All,
> 
> My CentOS 5.1 server is using iSCSI attached disks connecting
> to a dual controller storage array.  I have also configured multipathd
> to manage the multiple paths.  Everything works well, and on
> boot the dev nodes are automatically created in /dev/mapper.
> On these devices, I have created logical volumes using lvm2.
> 
> My problem is that lvm does not recognize these iscsi/multipath
> volumes on boot up.  I need to manually run "vgchange -ay"
> and mount the logical volumes by hand.
> 
> I tried running the vgchange and mount commands from
> /etc/rc.local, but that has no effect.  I have verified that
> /etc/rc.local itself is executing correctly.
> 
> What do I need to put in my boot up scripts so logical volumes
> in iscsi/multipathd devices are automatically recognized on boot?

Check out: http://people.redhat.com/mchristi/iscsi/RHEL4/doc/readme

I think the key here is to add the _netdev option in fstab for
those filesystems over iSCSI, even using LVM.

-Ross

______________________________________________________________________
This e-mail, and any attachments thereto, is intended only for use by
the addressee(s) named herein and may contain legally privileged
and/or confidential information. If you are not the intended recipient
of this e-mail, you are hereby notified that any dissemination,
distribution or copying of this e-mail, and any attachments thereto,
is strictly prohibited. If you have received this e-mail in error,
please immediately notify the sender and permanently delete the
original and any copy or printout thereof.