[dm-devel] RHEL 6 I/O error messages during booting

[Mike Snitzer]

On Fri, Oct 28 2011 at  5:13pm -0400,
Daniel Lang <langd at lanl.gov> wrote:

> We are having an issue that appears to be related to fact that the
> scsi_dh_rdac module is loaded after the qla FC driver and  SAN paths
> coming up before rdac can handle them. How can we change the order
> of kernel modules so that the scsi_dh_rdac module is loaded before
> the FC driver?

Add 'rdloaddriver=scsi_dh_rdac' to the kernel commandline to have the
initramfs preload the module (scsi_dh_rdac.ko should already be in the
initramfs).