Try setting "persistent binding" on your HBA's.
 
Bobby Williams
Sr. Systems Engineer
4250-A Benton Drive
Chattanooga, Tennessee  37406
Pager: 423-819-3336
Phone: 423-624-2600  x122
 

________________________________

From: veritas-bu-admin AT mailman.eng.auburn DOT edu on behalf of Kampen, Scott
Sent: Thu 5/5/2005 12:37 PM
To: veritas-bu AT mailman.eng.auburn DOT edu
Subject: [Veritas-bu] Drives unusable



Hello group, 
  
I'm running NB 5.0 on a Sun 480R - Solaris 9 with two 280R's as media servers.  
My tape unit is an IBM with 12 LTO fiber attached tape drives.  Here's the 
problem:


Daily my servers (both the master and the two media servers) will lose 
visibility to some of the tape drives.  I know this by running cfgadm -al and 
it shows something like the following:


c3 fc-fabric connected configured unknown 
c3::500507630f404301 tape connected configured unknown 
c3::500507630f404302 tape connected configured unknown 
c3::500507630f404303 tape connected configured unusable 
c3::500507630f404304 tape connected configured unusable 
c3::500507630f404305 tape connected configured unknown 
c3::500507630f404306 tape connected configured unknown 
c3::50060482cafd8e8c disk connected configured unknown 
c4 fc-fabric connected configured unknown 
c4::500507630f404307 tape connected configured unknown 
c4::500507630f404308 tape connected configured unknown 
c4::500507630f404309 tape connected configured unknown 
c4::500507630f40430a tape connected configured unknown 
c4::500507630f40430b tape connected configured unknown 
c4::500507630f40430c tape connected configured unknown 
c4::50060482cafd8e83 disk connected configured unknown 

Notice the two drives that show "unusable".  Now to fix this I've been running 
the following command. 

cfgadm -c configure c3 

In my message log I notice reference to 

May  5 08:03:20 pong    transport rejected 
May  5 08:03:20 pong genunix: [ID 408114 kern.info] 
/pci@8,700000/SUNW,qlc@3/fp@0,0/st@w500507630f404304,0 (st17) offline May  5 
08:03:20 pong scsi: [ID 107833 kern.warning] WARNING: 
/pci@8,700000/SUNW,qlc@3/fp@0,0/st@w500507630f404303,0 (st16):

May  5 08:03:20 pong    transport rejected 
May  5 08:03:20 pong genunix: [ID 408114 kern.info] 
/pci@8,700000/SUNW,qlc@3/fp@0,0/st@w500507630f404303,0 (st16) offline May  5 
08:06:20 pong bptm[3279]: [ID 498531 daemon.error] user scsi ioctl() failed, 
may be timeout, errno = 2, Error 0 May  5 08:06:20 pong bptm[13159]: [ID 498531 
daemon.error] user scsi ioctl() failed, may be timeout, errno = 2, Error 0 May  
5 08:06:20 pong bptm[3279]: [ID 498531 daemon.error] user scsi ioctl() failed, 
may be timeout, errno = 2, No such file or directory May  5 08:06:20 pong 
bptm[13159]: [ID 498531 daemon.error] user scsi ioctl() failed, may be timeout, 
errno = 2, No such file or directory May  5 08:06:49 pong scsi: [ID 365881 
kern.info] /pci@8,700000/SUNW,qlc@3/fp@0,0/st@w500507630f404303,0 (st16):

May  5 08:06:49 pong    <IBM Ultrium Gen 2 LTO> 
May  5 08:06:49 pong scsi: [ID 799468 kern.info] st16 at fp1: name 
w500507630f404303,0, bus address 61300 May  5 08:06:49 pong genunix: [ID 936769 
kern.info] st16 is /pci@8,700000/SUNW,qlc@3/fp@0,0/st@w500507630f404303,0

May  5 08:06:49 pong genunix: [ID 408114 kern.info] 
/pci@8,700000/SUNW,qlc@3/fp@0,0/st@w500507630f404303,0 (st16) online May  5 
08:06:51 pong scsi: [ID 365881 kern.info] 
/pci@8,700000/SUNW,qlc@3/fp@0,0/st@w500507630f404301,0 (st14):

May  5 08:06:51 pong    <IBM Ultrium Gen 2 LTO> 



Does this problem have to do with a NetBackup timeout value or is this a SUN 
issue?  I've got SUN support on these systems and will work the issue with them 
if needed, but I didn't know if someone else on this group might have run into 
the same issue.  Maybe there is a kernel setting that needs tweaking?

Thanks for any help in advance. 
Scott