SUMMARY: L25 causing system to hang

After installing all recommended patches, and upgrading the firmware on the 
V120 server, the culprit was a bad sd.conf file. This problem would have been 
solved a lot sooner had the workaround in bugID# 4895444 been correctly stated. 
Because of my problem and the recommendation of a Sun engineer, the workaround 
in the bugID has since been corrected. The workaround now correctly states that 
you can't have more than 8 LUNs per target. This problem is currently 
applicable to the L25 tape drive. Here is the recommended workaround copied 
from the bugID ( I only included the fix here) :

Change the scsi target id of the L25 controller where we do not have any
targets that have more than 8 luns. In this case we need to delete target 0 Lun
8,9,10 and 11. See Below for the changes that need to be made for the sd.conf
file from the one above. In this example we have only 8 luns per target, 0-7.

                            #
                            # Copyright (c) 1992, by Sun Microsystems, Inc.
                            #
                            #ident  "@(#)sd.conf    1.9     98/01/11 SMI"

                            name="sd" class="scsi" class_prop="atapi"
                                    target=0 lun=0;
                            name="sd" class="scsi" class_prop="atapi"
                                    target=0 lun=1;
                            name="sd" class="scsi" class_prop="atapi"
                                    target=0 lun=2;
                            name="sd" class="scsi" class_prop="atapi"
                                    target=0 lun=3;
                            name="sd" class="scsi" class_prop="atapi"
                                    target=0 lun=4;
                            name="sd" class="scsi" class_prop="atapi"
                                    target=0 lun=5;
                            name="sd" class="scsi" class_prop="atapi"
                                    target=0 lun=6;
                            name="sd" class="scsi" class_prop="atapi"
                                    target=0 lun=7;

                            name="sd" class="scsi" class_prop="atapi"
                                    target=1 lun=0;

                            name="sd" class="scsi" class_prop="atapi"
                                    target=2 lun=0;

                            name="sd" class="scsi" class_prop="atapi"
                                    target=3 lun=0;

                            name="sd" class="scsi"
                                    target=4 lun=0;

                            name="sd" class="scsi"
                                    target=5 lun=0;

                            name="sd" class="scsi"
                                    target=6 lun=0;

                            name="sd" class="scsi"
                                    target=8 lun=0;

                            name="sd" class="scsi"
                                    target=9 lun=0;

                            name="sd" class="scsi"
                                    target=10 lun=0;

                            name="sd" class="scsi"
                                    target=11 lun=0;

                            name="sd" class="scsi"
                                    target=12 lun=0;

                            name="sd" class="scsi"
                                    target=13 lun=0;

                            name="sd" class="scsi"
                                    target=14 lun=0;

                            name="sd" class="scsi"
                                    target=15 lun=0;


Thanks to all those that offered suggestions.

Dale



ORIGINAL POSTING:

 Have recently purchased an L25 tape drive system, hooking it up to a V120, 
using a PCI SCSI-3 dual channel I/O card. The problem occurs when trying to 
reboot the V120. The L25 causes the V120 to hang during the boot process. 
Sunsolve reported a similar problem and suggested checking the sd.conf. I have 
checked the sd.conf file, and have had another admin check it as well, and we 
both agree the sd.conf file is correct. At the ok> prompt, probe-scsi-all 
reports correctly the library(robot) and the drive SCSI IDs that are set for 
the L25. The V120 is so badly hung that it fails to recognize a "stop-A", thus 
requiring a power cycle for a reboot. I have also loaded the recommended patch 
as suggested from the Sun system handbook for the L25, but this provided no 
success.