HP Library and Tape Tools - Manual (Page 158)

Why doesn't L&TT for HP-UX see all the devices connected to a SAN environment?
L&TT may not be able to see all of the devices (e.g. libraries) in a SAN environment if the number
of files ed by it has reached the maximum limit (maxfiles). Hence, in a large SAN, with a large
number of devices and disks, HP recommends setting maxfiles larger than 2048 , depending
on the SAN size. Use the commands kmtune or kctune to configure maxfiles.
Why am I unable to download firmware/script files using the download option in
the CSI (HP-UX, Linux)?
If your network is protected by a firewall and web proxy, you must first specify the proxy server
name and port name using the Preferences screen.
Why doesn't L&TT for Tru64 see some of my devices?
Whenever you connect or remove a device, you must reconfigure the CAM and hardware manager
layers. Furthermore, Tru64 does not support hot swapping of SCSI devices. To reconfigure the
CAM and hardware manager layers:
1. Close L&TT.
2. Use the following command to check for stale devices:
/sbin/hwmgr show scsi -full | grep stale
3. Remove any stale devices. If you are not sure whether a device is stale or not, remove it
anyway. Devices can be rediscovered later. Use the following command to remove a device:
/sbin/hwmgr -delete scsi -did <SCSI ID>
4. Rescan the SCSI bus.
/sbin/hwmgr scan scsi
5. Rescan the CAM layer.
/sbin/scu scan edt
6. Run the following commands to verify the SCSI devices:
/sbin/hwmgr show scsi
/sbin/scu show edt
7. Restart L&TT.
Why doesn't L&TT for Linux see some of my devices?
To detect a surrogate SCSI device, you must configure the modules.conf file for the new device
you have connected. After modifying this file, reboot the computer so that the new device is
recognized by the scsi/sg layer. Linux does not support hot swapping of SCSI devices. To
reconfigure the modules.conf file:
1. Login as root.
2. Edit the following file:
vi /etc/modules.conf
3. Add the following line as appropriate:
add options scsi_mod max_scsi_luns=128
4. Reboot the computer.
158 Frequently asked questions