"Dr. Andreas Wehler" wrote:
>
> Hello.
>
> There are 5 SCSI disks happily running at sda - sde. The 6th
> disk is accepted as /dev/sdf, as the kernel output after lilo
> says. But fdisk /dev/sdf fails with "Unable to open /dev/sdf".
> strace fdisk /dev/sdf gives
>
> open("/dev/sdf", O_RDWR) = -1 ENXIO (Device not configured)
> open("/dev/sdf", O_RDONLY) = -1 ENXIO (Device not configured)
The problem is solved with the help of this great fellow
and expert: Marc SCHAEFER <[EMAIL PROTECTED]>, who worked
out the solution:
:: SYMPTOM
:: - Computer has two SCSI cards. The kernel has one of the SCSI driver
:: monolithic, along scsi and sd.
:: - After kernel boots, the second card's module is loaded.
:: - The second SCSI bus has more than 2 hard drives
:: - All SCSI disks from first bus are usable with no problem. However,
:: only the first two of the second bus are visible. The third and
:: next fail with errors
::
:: SOLUTION
:: - edit /usr/src/linux/drivers/hosts.h and change
:: #define SD_EXTRA_DEVS 2
:: into
:: #define SD_EXTRA_DEVS 3
:: if you have 3 disks on the second bus, or to 4 if you have 4, etc.
::
:: Similar problems presumably for tapes, generic, etc.
::
::
:: And don't forget to recompile and run LILO.
And everything work now. Linux and its people are just
excellent.
Andreas Wehler
--
CAD/CAM straessle GmbH Tel.: (+49) 211 - 52740 - 228
Dr.-Ing. Andreas Wehler Fax.: (+49) 211 - 52740 - 280
http://www.cc-straessle.com
