SCSI DVD drive not recognized on fc3-t2 kernel 2.6.8-1.584

[Bill Nottingham]

Harald Hoyer (harald at redhat.com) said: 
> Normally, if you insmod a scsi host adaptor it causes several hotplug 
> events, which are handled also by the scsi.agent, which loads the sr_mod 
> or other scsi related modules.
> But if the scsi hostadapter module is loaded in the initrd, there is no 
> scsi.agent and also no sr_mod... thus no device nodes are created.. Doh!
> 
> In my opinion, if a host adaptor is loaded, the sg module should be 
> loaded in any case, to enable generic scsi commands.

sg isn't used for generic SG access... SG_IO can be used on the
device itself.

> We could replay some hotplug events on system start after initrd, to get 
> the full hotplug functionality. This is already done by udevstart, but 
> only for devices.

AFAIK, /dev/sg* isn't needed. Where specifically is it breaking?

Bill