Displaying The Recognized Logical Units; For Red Hat Enterprise Linux Or Oracle Linux - Fujitsu ETERNUS DX Configuration Manual

Chapter 8 LUN Recognition
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-dis-
played using the following commands.
8.2.1

For Red Hat Enterprise Linux or Oracle Linux

• "dmesg" command for LUN display
Use the "dmesg" command in order to confirm whether Linux has recognized the LUNs in the ETERNUS DX
storage systems.
The following shows an example:
#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
Type:
Vendor: FUJITSU
Type:
• "cat" command for LUN display
Use the "cat" command to display the "/proc/scsi/scsi" file, which contains a list of recognized SCSI devices.
The following shows an example:
# cat /proc/scsi/scsi
Attached devices:
Host: scsi0 Channel: 02 Id: 00 Lun: 00
Vendor: LSI
Type:
Host: scsi1 Channel: 00 Id: 01 Lun: 00
Vendor: FUJITSU
Type:
Host: scsi1 Channel: 00 Id: 01 Lun: 01
Vendor: FUJITSU
Type:
Host: scsi1 Channel: 00 Id: 01 Lun: 02
Vendor: FUJITSU
Type:
Host: scsi1 Channel: 00 Id: 01 Lun: 03
Vendor: FUJITSU
Type:
Host: scsi1 Channel: 00 Id: 01 Lun: 04
Vendor: FUJITSU
Type:
At this point the Multipath Driver has not been set up yet, so two SCSI devices are shown for each connec-
ted LUN (i.e. if there are 3 LUNs, 6 SCSI devices are shown).
:
Model: ETERNUS_DXL
Direct-Access
Model: ETERNUS_DXL
Direct-Access
Model: MegaRAID SAS RMB Rev: 1.02
Direct-Access
Model: ETERNUS_DXL
Direct-Access
Model: ETERNUS_DXL
Direct-Access
Model: ETERNUS_DXL
Direct-Access
Model: ETERNUS_DXL
Direct-Access
Model: ETERNUS_DXL
Direct-Access
FUJITSU Storage ETERNUS DX Configuration Guide -Server Connection- (SAS) for Linux
Copyright 2018 FUJITSU LIMITED
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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