small scsi_scanorder patch

Rolf Fokkens (rolf@flits102-126.flits.rug.nl)
Mon, 05 Jul 1999 23:16:22 +0200

The kernel assigns minor SCSI device numbers dynamically. This is done
by assigning them only to actually connected devices in order of their
SCSI-id's (mostly ascending). This means that connecting an external
SCSI device changes the minors of all internal devices with a higher
SCSI-id forcing me to change /etc/fstab when connecting the external
device and to change it back when disconnecting the device.

I created a small scsiorder patch to solve this by fixing the problem
where it originates. For example the kernel parameter
"scsi_scanorder=1,10,6" means to scan the devices in the following
order: 1,10,6,0,2,3,4,5,7,8,9,11,12,13,15. Which means SCSI-id's 1,10,6
and 0 will allways be mapped on sda, sdb, sdc en sdd (if all connected).

More info: http://flits102-126.flits.rug.nl/~rolf/scanorder/index.html
There's a small description of the alternatives like devfs and scsidev
as well.

cheers!

Rolf.
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