On 03/21/2016 09:40 PM, Laurence Oberman wrote:
> Hello Hannes
> 
> Please share latest scripts and an example of how you are using them.
> I have some scripts from last November, that you posted but I am sure they have changed.
> If not then I will modify them as appropriate, just let me know.
> 
> I have added the patches and booted the system set to async, so before I boot with
> scsi_mod.scan=manual want to prepare my test system.
> This feature may be a very useful feature we would want to include in RHEL as we
> struggle with large LUN boot configurations all the time.

Oh, really? Hardly a surprise.
In fact, I'm constantly surprised that RHEL ships with systemd
enabled, apparently without any issues.
Especially in large machines.
As we found to our dismay; I spent about a year to get things
running smoothly.
Or, to be precise, running at all.

Anyway.

Attached is the original patch to dracut; please check if it's the
correct version (I've changed the 'disabled' to 'manual' for
upstream submission).

I haven't included the systemd service; that's actually quite
trivial: reset the scan mode (as it's now writeable) and call
rescan-scsi-bus.sh or equivalent.

But please add a 'Tested-by' or equivalent to the upstream patch, to
add a bit more urgency to it.

Cheers,

Hannes
-- 
Dr. Hannes Reinecke		   Teamlead Storage & Networking
hare@suse.de			               +49 911 74053 688
SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg
GF: F. Imendörffer, J. Smithard, J. Guild, D. Upmanyu, G. Norton
HRB 21284 (AG Nürnberg)