IBM System storage DS6000 Series, Attachment Manual, Page: 143 / 298

Some Linux drivers do not automatically configure any LUNs other than LUN 0. You
might have to manually configure the other LUNs, depending on the Linux driver
that you are using. You can find the list of assigned LUNs in the /proc/scsi/scsi file.
Figure 60 shows an example of the proc/scsi/scsi file for a Linux host that only
configures the first LUN, LUN 0, on each host adapter port.
You can create a script to configure every LUN that is assigned to the system. Use
the scsi add-single-device command to consecutively configure all of the LUNs
that are assigned to your host system. Write a script that repeats the scsi
add-single-device command for each LUN on each ID for each host adapter. The
script must scan all host adapter ports and identify all of the LUNs that are
assigned to each port.
After you run the script, you can view all of the assigned LUNs in the proc/scsi/scsi
file. Figure 61 shows an excerpt of an example proc/scsi/scsi file for a Linux host
after a script has configured every LUN.
# cat proc/scsi/scsi
...
Host: scsi0 Channel: 00 Id: 00 Lun: 00
Vendor: IBM-PSG Model: DPSS-318350M F Rev: S9HA
Type: Direct-Access ANSI SCSI revision: 03
Host: scsi0 Channel: 00 Id: 15 Lun: 00
Vendor: IBM Model: TP4.6 V41b3 Rev: 4.1b
Type: Processor ANSI SCSI revision: 02
Host: scsi2 Channel: 00 Id: 00 Lun: 00
Vendor: IBM Model: 2105800 Rev: .294
Type: Direct-Access ANSI SCSI revision: 03
Host: scsi3 Channel: 00 Id: 00 Lun: 00
Vendor: IBM Model: 2105800 Rev: .294
Type: Direct-Access ANSI SCSI revision: 03
Host: scsi3 Channel: 00 Id: 01 Lun: 00
Vendor: IBM Model: 2105800 Rev: .294
Type: Direct-Access ANSI SCSI revision: 03
Figure 60. Example output for a Linux host that only configures LUN 0
# cat proc/scsi/scsi
...
Host: scsi3 Channel: 00 Id: 00 Lun: 00
Vendor: IBM Model: 2105800 Rev: .294
Type: Direct-Access ANSI SCSI revision: 03
Host: scsi3 Channel: 00 Id: 01 Lun: 00
Vendor: IBM Model: 2105800 Rev: .294
Type: Direct-Access ANSI SCSI revision: 03
Host: scsi3 Channel: 00 Id: 00 Lun: 01
Vendor: IBM Model: 2105800 Rev: .294
Type: Direct-Access ANSI SCSI revision: 03
Host: scsi3 Channel: 00 Id: 00 Lun: 02
Vendor: IBM Model: 2105800 Rev: .294
Type: Direct-Access ANSI SCSI revision: 03
Host: scsi3 Channel: 00 Id: 00 Lun: 03
Vendor: IBM Model: 2105800 Rev: .294
Type: Direct-Access ANSI SCSI revision: 03
Host: scsi3 Channel: 00 Id: 00 Lun: 04
Vendor: IBM Model: 2105800 Rev: .294
Type: Direct-Access ANSI SCSI revision: 03
...
Figure 61. Example output for a Linux host with configured LUNs
Chapter 11. Attaching to an Intel host running Linux
113