Re: aic7xxx scsi init

David Woodhouse (dwmw2@cam.ac.uk)
Thu, 30 Oct 1997 23:38:39 +0000

twinkler@snafu.owl.de said:
> Is there a possibility to reset the first SCSI channel later (i.e.
> when the machine has booted) and would the Exabyte then be
> recognized?

I just happened to be reading the following a few hours before seeing your
question:

http://sunsite.unc.edu/mdw/HOWTO/CD-Writing-HOWTO-4.html#ss4.6

4.6 "How to probe for SCSI-devices after boot?"

The file drivers/scsi/scsi.c contains the information

/*
* Usage: echo "scsi add-single-device 0 1 2 3" >/proc/scsi/scsi
* with "0 1 2 3" replaced by your "Host Channel Id Lun".
* Consider this feature BETA.
* CAUTION: This is not for hotplugging your peripherals. As
* SCSI was not designed for this you could damage your
* hardware !
* However perhaps it is legal to switch on an
* already connected device. It is perhaps not
* guaranteed this device doesn't corrupt an ongoing data transfer.
*/