Displaying The Recognized Logical Units; For Red Hat Enterprise Linux - Fujitsu ETERNUS2000 Connection Manual

Chapter 8 LUN Recognition
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8.2 Displaying the Recognized Logical Units

8.2 Displaying the Recognized Logical Units
The driver version and information of each LUN's SCSI device name, etc. are displayed in the
console message when Linux is booted up. Although this console message disappears soon
from the screen, it can be re-displayed using the following command:
8.2.1

For Red Hat Enterprise Linux

The driver version and information of each LUN's SCSI device name, etc. are displayed in the
console message when Linux is booted up. Although this console message disappears soon
from the screen, it can be re-displayed using the following command:
• "dmesg" command for LUN display
Use the "dmesg" command in order to confirm whether Linux has recognized the LUNs in the
ETERNUS Disk storage systems.
The following shows an example:
• "cat" command for LUN display
Use the "cat" command to display the "/proc/scsi/scsi" file, where you can confirm the
recognized SCSI devices.
The following shows an example of this.
At this point the Multipath Driver has not been set up yet, so two SCSI devices are shown for
each connected LUN (i.e. if there are 3 LUNs, 6 SCSI devices are shown).
P3AM-4212-02ENZ0 ETERNUS2000 Disk storage systems Server Connection Guide (SAS) for Linux
#dmesg|less
:
ioc0: LSISAS1068E B3: Capabilities={Initiator}
PCI: Setting latency timer of device 0000:09:00.0 to 64
scsi1 : ioc0: LSISAS1068E B3, FwRev=011b2900h, Ports=1, MaxQ=483, IRQ=169
Vendor: FUJITSU Model: E2000
Type: Direct-Access
Vendor: FUJITSU Model: E2000
Type: Direct-Access
# cat /proc/scsi/scsi
Attached devices:
Host: scsi0 Channel: 02 Id: 00 Lun: 00
Vendor: LSI Model: MegaRAID SAS RMB Rev: 1.02
Type: Direct-Access
Host: scsi1 Channel: 00 Id: 01 Lun: 00
Vendor: FUJITSU Model: E2000
Type: Direct-Access
Host: scsi1 Channel: 00 Id: 01 Lun: 01
Vendor: FUJITSU Model: E2000
Type: Direct-Access
Host: scsi1 Channel: 00 Id: 01 Lun: 02
Vendor: FUJITSU Model: E2000
Type: Direct-Access
Host: scsi1 Channel: 00 Id: 01 Lun: 03
Vendor: FUJITSU Model: E2000
Type: Direct-Access
Host: scsi1 Channel: 00 Id: 01 Lun: 04
Vendor: FUJITSU Model: E2000
Type: Direct-Access
Rev: 0000
ANSI SCSI revision: 05
Rev: 0000
ANSI SCSI revision: 05
ANSI SCSI revision: 05
Rev: 0000
ANSI SCSI revision: 05
Rev: 0000
ANSI SCSI revision: 05
Rev: 0000
ANSI SCSI revision: 05
Rev: 0000
ANSI SCSI revision: 05
Rev: 0000
ANSI SCSI revision: 05
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