On Wed, 2007-12-26 at 10:03 -0500, Robert Moskowitz wrote:
> <snip>
> >>>>> Do an lsmod and see if you see sg, maybe sd_mod, scsi_mod, ide_cd.
> >>>>> Look at /etc/modules.conf (I think that's it - thngs changed in the last
> >>>>> decade or so).
> >>>>>
> >>>>>
> >>>>>
> >>>> scsi_mod 133069 4 sr_mod,sg,libata,usb_storage
> >>>> ide_cd 40033 0
> >>>> cdrom 36705 2 sr_mod,ide_cd
> >>>>
> >>>> (also a plain-old cdrom installed via IDE (internal) on this server).
> >>>>
> >
> > I didn't notice this before. the entries on the right specify who uses
> > that module. Are they compiled in on your system? Custom kernel? I'd
> > have thought those would show up in lsmod too.
> >
> Everything on this system came from the Centos 5/5.1 repos (5.1 are
> local mirrors).
> > My 5.1 has scsi_mod, sg, sd_mnod, libata and some chipset-specific
> > modules.
I'm almost certain that scsi_mod, sg and sd_mod are needed for all these
scsi operations. The libata is needed by my sata_via driver, so may not
be needed on your setup.
> >
> > It also has, in modprobe.conf alias scsi_hostadapter sata_via. The last
> > is chipset-specific. I don't know if this line is needed at all on your
> > system.
> >
> Well how do I find out?
BTW. Try doing insmod on modules you suspect are needed. Then if one of
them satisfies a dependency, or depends on another module that is
loaded, the lsmod will show that.
Once you have the modules.dep correct (depmod -a?) and have identified
the chipset module needed (*if* any and it's not already loaded), you
can try adding the "alias scsi_hostadapter ..." line specifying that
chipset module. Then whenever the system tries to use something that
requires scsi_hostadapter, the driver for that chipset will be
automatically loaded.
<snip>
--
Bill
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