I am unable to create partitions, whatever tool I use (fdisk, sfdisk,
parted...). The application succeeds with no error messages, but the
partition table is not written to disk. There are messages from the kernel
related to the SCSI driver:

Nov  9 11:29:45 localhost kernel: SCSI disk error : host 0 channel 0 id 4
lun 0 return code = 18000002
Nov  9 11:29:45 localhost kernel: [valid=0] Info fld=0x0, Current sd08:30:
sense key Aborted Command
Nov  9 11:29:45 localhost kernel: Additional sense indicates Scsi parity
error
Nov  9 11:29:45 localhost kernel:  I/O error: dev 08:30, sector 0

and

Nov  9 11:29:46 localhost kernel: SCSI disk error : host 0 channel 0 id 4
lun 0 return code = 18000002
Nov  9 11:29:46 localhost kernel: [valid=0] Info fld=0x0, Current sd08:30:
sense key Aborted Command
Nov  9 11:29:46 localhost kernel: Additional sense indicates Scsi parity
error
Nov  9 11:29:46 localhost kernel:  I/O error: dev 08:30, sector 34968

This was actually produced by:

# sfdisk /dev/sdd <part

part:
# partition table of /dev/sdd
unit: sectors

/dev/sdd1 : start=       62, size=   34906, Id=83, bootable
/dev/sdd2 : start=    34968, size= 8881872, Id= 5
/dev/sdd3 : start=        0, size=       0, Id= 0
/dev/sdd4 : start=        0, size=       0, Id= 0
/dev/sdd5 : start=    35030, size= 1048978, Id=82
/dev/sdd6 : start=  1084070, size= 7832770, Id=83

The problem is not related to the disk, because the behavior is identical on
the four disks on the controler.
This problem seems related to the driver, because three applications have
the same kind of problem. However, at installation time (RHS 7.1) diskdruid
succeeds in partitionning.

My config is a BP6 + Tekram DC390-U2W + IBM  DDRS-34560D on Ids 0, 1, 2, &
4, an HP C5683A on id 3.

The system is a RHS 7.1 right out of the box.

So, any ideas ?

Vincent