I've installed FC4 on an older compaq system that uses a sym53c8xx scsi
controller. I've been trying to get the scsi bus to run in sync mode
with limited success.
Looking at the docs for the kernel module sym53c8xx_2 I found the
following for setting sync mode on boot with lilo (along with a few
other options):
lilo: linux root=/dev/sda2 sym53c8xx.cmd_per_lun=4 sym53c8xx.sync=10
sym53c8xx.debug=0x200
I then modified the kernel line in the grub.conf file:
kernel /boot/vmlinuz-2.6.11-1.1369_FC4smp ro root=/dev/md0
sym53c8xx.sync=10 rhgb quiet
This resulted in an error during boot that "sym53c8xx.sync=10" was unknown.
I found that I could use the following command after the machine is up
and running:
echo "setsync all 10" > /proc/scsi/sym53c8xx/1
I've since added that line to /etc/rc3.d/S99local
keep in mind the system boots off this controller, controller 0 is
unused and its a 2 port scsi controller. There is an IDE controller in
the machine that handles only the CD-rom drive.
How do I have the kernel automatically put the scsi controller in sync
mode at boot time, or am I stuck with the line in S99local?
TIA
Jeff
