RHEL 4 on CL380 with CR3500 disk array.

[Surya Narayana]

As soon as I bring up the second node, I start
getting scsi reset errors in dmesg, and the shared drives are no longer accessible. Here
are the details:

Both servers are identical, except for the
fact that /etc/modprobe.conf has "hostid:6"
for sym53c8xx on the bottom node, matching
the firmware SCSI ID. BTW, I changed the SCSI
ID to 6 for both the ports (local as well as shared) in the BIOS for the bottom node.

The local drives show up under /dev/ida/c0..
and the shared drives (two of them) as /dev/sda
and /dev/sdb.

I have upgraded the firmware on both the CR3500 and the nodes.

Here's the output of /var/log/messages as soon
as I run a "modprobe -v sym53c8xx". It appears that despite my option of "hostid:6" to sym53c8xx, it is still using a SCSI ID of 7:
Oct 26 15:51:33 southdakota kernel: ACPI: PCI interrupt 0000:03:04.0[A] -> GSI 27 (level, low) -> IRQ 209
Oct 26 15:51:33 southdakota kernel: sym0: <896> rev 0x7 at pci 0000:03:04.0 irq 209
Oct 26 15:51:33 southdakota kernel: sym0: using 64 bit DMA addressing
Oct 26 15:51:33 southdakota kernel: sym0: No NVRAM, ID 7, Fast-40, LVD, parity checking
Oct 26 15:51:33 southdakota kernel: sym0: SCSI BUS has been reset.
Oct 26 15:51:33 southdakota kernel: scsi4 : sym-2.1.18j
Oct 26 15:51:36 southdakota kernel: scsi: unknown device type 12
Oct 26 15:51:36 southdakota kernel: Vendor: Compaq Model: CR3500 Rev: x2r-
Oct 26 15:51:36 southdakota kernel: Type: RAID ANSI SCSI revision: 02
Oct 26 15:51:36 southdakota kernel: target4:0:2: Beginning Domain Validation
Oct 26 15:51:36 southdakota kernel: sym0:2: wide asynchronous.
Oct 26 15:51:36 southdakota kernel: sym0:2: FAST-20 WIDE SCSI 40.0 MB/s ST (50.0 ns, offset 15)
Oct 26 15:51:36 southdakota kernel: target4:0:2: Domain Validation skipping write tests
Oct 26 15:51:36 southdakota kernel: target4:0:2: Ending Domain Validation
Oct 26 15:51:36 southdakota kernel: Vendor: Compaq Model: CR3500 Rev: x2r-
Oct 26 15:51:36 southdakota kernel: Type: Direct-Access ANSI SCSI revision: 02
Oct 26 15:51:36 southdakota kernel: SCSI device sda: 17762304 512-byte hdwr sectors (9094 MB)
Oct 26 15:51:36 southdakota kernel: SCSI device sda: drive cache: write through
Oct 26 15:51:36 southdakota kernel: sda:
Oct 26 15:51:36 southdakota kernel: Attached scsi disk sda at scsi4, channel 0, id 2, lun 1
Oct 26 15:51:36 southdakota kernel: scsi: unknown device type 12
Oct 26 15:51:36 southdakota scsi.agent[3332]: disk at /devices/pci0000:03/0000:03:04.0/host4/target4:0:2/4:0:2:1
Oct 26 15:51:37 southdakota kernel: Vendor: Compaq Model: CR3500 Rev: x2r-
Oct 26 15:51:37 southdakota kernel: Type: RAID ANSI SCSI revision: 02
Oct 26 15:51:37 southdakota kernel: sym0:3:0: tagged command queuing enabled, command queue depth 16.
Oct 26 15:51:37 southdakota kernel: target4:0:3: Beginning Domain Validation
Oct 26 15:51:37 southdakota kernel: sym0:3: wide asynchronous.
Oct 26 15:51:37 southdakota kernel: sym0:3: FAST-20 WIDE SCSI 40.0 MB/s ST (50.0 ns, offset 15)
Oct 26 15:51:37 southdakota kernel: target4:0:3: Domain Validation skipping write tests
Oct 26 15:51:37 southdakota kernel: target4:0:3: Ending Domain Validation
Oct 26 15:51:40 southdakota kernel: ACPI: PCI interrupt 0000:03:04.1[B] -> GSI 26 (level, low) -> IRQ 217
Oct 26 15:51:40 southdakota kernel: sym1: <896> rev 0x7 at pci 0000:03:04.1 irq 217
Oct 26 15:51:40 southdakota kernel: sym1: using 64 bit DMA addressing
Oct 26 15:51:40 southdakota kernel: sym1: No NVRAM, ID 7, Fast-40, LVD, parity checking
Oct 26 15:51:40 southdakota kernel: sym1: SCSI BUS has been reset.
Oct 26 15:51:40 southdakota kernel: scsi5 : sym-2.1.18j

Appreciate if anyone can throw some light on this.

Surya.