vmunix: SPT

[Danny Crisp]

What does vmunix: SPT: (spt_open) Bad device number: 0x4d000000 mean? This just appeared in one of our servers /var/adm/syslog/syslof.log file for no apparent reason. No changes have been made.

[A. Clay Stephenson]

SPT is the SCSI pass-through driver. SPT devices are most-commonly used with tape library robotic devices. You can verify this by doing an lsdev and noting that hex 4D = 77dec do look in /dev for devices with major number 77. An ioscan -fn posting would also be helpful.

[Alex Glennie]

its reported by SPT (SCSI Pass Through) driver when open() system call is
called with invalid device files that minor number is incorrect.

from man scsi_pt, the minor number format for SPT driver is,
minor number = 0xIITL00
II = card instance number
T = SCSI target ID
L = LU number on the SCSI device.
00 = reserved.

major number is 75 so the most likely cause is there are some invalid device files that have correct major number for SPT but incorrect minor number and Omniback or a similar command / backup utility tried to open that device file.

[Danny Crisp]

Please find attached ioscan -fun output. Below is the relavent output from lsdev -C autoch and ioscan -funC autoch: -

Character Block Driver Class
231 29 schgr autoch

ClasS I H/W Path Driver S/W State
autoch 0 10/0/15/1.0.0 schgr CLAIMED
/dev/rac/c3t0d0

# ll /dev/rac/c3t0d0

crw------- 1 bin sys 231 0x030000 Feb 16 2005 /dev/rac/c3t0d0

[A. Clay Stephenson]

I couldn't open your attachment. You should note that the process that triggered this error was not using the scghr or autoch devices; it was using scsi pass-thru. The are really looking for something like /dev/spt/c0t0d0.

One way to find these device nodes is to note that 4d (hex) = 77 (dec) and do a find looking for this:

find /dev -type c -exec ls -l {} \; | awk '{if ($5 == 77) print $0}'

[Danny Crisp]

One result returned from the example you supplied: -

crw------- 1 root root 77 0x000000 Sep 13 2004 /dev/ipmi

[A. Clay Stephenson]

Then that is the device node that the process that triggered your error was using. Do you have any scripts or applications that use that device node?

[A. Clay Stephenson]

ipmi = intelligent platform management interface

http://docs.hp.com/en/B2355-60105/ipmi.7.html

[Danny Crisp]

We are using Legato Networker.

[Danny Crisp]

I have found a solution to this question

[EmLea]

I am experiencing this same error. Can you let me know what your resolution was? The ipmi controller is unclaimed/unknown, which indicates the driver is not present. I reinstalled the driver, but error is still occurring. Any assistance you can provide is greatly appreciated.