isp driver - inquiry changed

[Rajesh S. Ghanekar]

Hi,

         I am using FreeBSD-4.10 with isp driver on HP EVA-8k SAN box.

The description of the problem is as follows:
1.  Two machines are using HP EVA-8k with only single controller active.
2.  Both of these machines are doing heavy IO on the their individual LUNs.
3.  Now if any one of the machine is rebooted, the other machine's OS 
panics
    and reboots.  Both the machines are using FreeBSD-4.10.

Here is the debug info attached.

------------------------------ Debug Info 
--------------------------------------------------

(da0:isp0:0:2:1): (da0:isp0:0:2:1): (da0:isp0:0:2:1): (da0:isp0:0:2:1): 
(da0:isp0:0:2:1): (da0:isp0:0:2:1): (da
0:isp0:0:2:1): Invalidating pack
(da0:isp0:0:2:1): . CDB: 1b 0 0 0 1 0
(da0:isp0:0:2:1): . CDB: 2a 0 e 40 1a 23 0 0 4 0
(da0:isp0:0:2:1): . CDB: 28 0 f 58 53 92 0 0 4 0
(da0:isp0:0:2:1): . CDB: 28 0 f 93 38 7f 0 0 4 0
(da0:isp0:0:2:1): . CDB: 2a 0 1a 6e 50 9b 0 0 4 0
(da0:isp0:0:2:1): (da0:isp0:0:2:1): (da0:isp0:0:2:1): (da0:isp0:0:2:1): 
. CDB: 2a 0 16 90 45 14 0 0 4 0
(da0:isp0:0:2:1): . CDB: 2a 0 1 58 a7 60 0 0 4 0
(da0:isp0:0:2:1): . CDB: 28 0 a d6 c1 9d 0 0 4 0
(probe0:isp0:0:2:1): . CDB: 1a 0 a 0 14 0
(da0:isp0:0:2:1): inquiry changed
(da0:isp0:0:2:1): . CDB: 2a 0 8 9f 6d 25 0 0 4 0

Fatal trap 12: page fault while in kernel mode
mp_lock = 01000002; cpuid = 1; lapic.id = 06000000
fault virtual address   = 0x60
fault code              = supervisor read, page not present
instruction pointer     = 0x8:0xc01aec1b
stack pointer           = 0x10:0xf4f41d5c
frame pointer           = 0x10:0xf4f41d74
code segment            = base 0x0, limit 0xfffff, type 0x1b
                        = DPL 0, pres 1, def32 1, gran 1
processor eflags        = interrupt enabled, resume, IOPL = 0
processor eflags        = interrupt enabled, resume, IOPL = 0
current process         = 10750 (IOtest-static)
interrupt mask          = none <- SMP: XXX
trap number             = 12
panic: page fault
mp_lock = 01000002; cpuid = 1; lapic.id = 06000000
boot() called on cpu#1
Boot called at 1133184305 seconds

syncing disks... (probe0:isp0:0:2:1): . CDB: 12 1 80 0 ff 0
(probe0:isp0:0:2:1): . CDB: 12 0 0 0 24 0
(probe0:isp0:0:2:1): . CDB: 12 0 0 0 fb 0
(probe0:isp0:0:2:1): . CDB: 1a 0 a 0 14 0
(probe0:isp0:0:2:1): . CDB: 12 1 80 0 ff 0
(probe0:isp0:0:2:1): . CDB: 12 0 0 0 24 0
(probe0:isp0:0:2:1): . CDB: 12 0 0 0 fb 0
(probe0:isp0:0:2:1): . CDB: 1a 0 a 0 14 0
(probe0:isp0:0:2:1): . CDB: 12 1 80 0 ff 0
(probe0:isp0:0:2:1): . CDB: 12 0 0 0 24 0

------------------------------------------------------------------------------------------

I am confused at why these "inquiry changed" messages are getting logged.
This seems to work with SAN boxes other than HP EVA-8k and EVA-6k.
Any ideas on why these "inquiry changed" messages are getting created and
are they cause of this kernel panic?



Thanks,
Rajesh