Linux - Find a server is assigned with lun or not, Find what are luns are present in server

Find a server is assigned with lun or not

Below are the simple methods to find out whether a server is integrated with storage device or not. This command will print all the scsi devices present in the server.

 # cat /proc/scsi/scsi

OUTPUT:

Attached devices:
Host: scsi0 Channel: 00 Id: 00 Lun: 00
  Vendor: EMC      Model: SYMMETRIX        Rev: xyz2
  Type:   Direct-Access                    ANSI SCSI revision: 02
Host: scsi0 Channel: 00 Id: 00 Lun: 112
  Vendor: EMC      Model: SYMMETRIX        Rev: xyz2
  Type:   Direct-Access                    ANSI SCSI revision: 02
Host: scsi0 Channel: 00 Id: 00 Lun: 49
  Vendor: EMC      Model: SYMMETRIX        Rev: xyz2
  Type:   Direct-Access                    ANSI SCSI revision: 02
Host: scsi0 Channel: 00 Id: 00 Lun: 50
  Vendor: EMC      Model: SYMMETRIX        Rev: xyz2
  Type:   Direct-Access                    ANSI SCSI revision: 02
Host: scsi0 Channel: 00 Id: 00 Lun: 81
  Vendor: EMC      Model: SYMMETRIX        Rev: xxx2
  Type:   Direct-Access                    ANSI SCSI revision: 02
Host: scsi0 Channel: 00 Id: 00 Lun: 113
  Vendor: EMC      Model: SYMMETRIX        Rev: abc3
  Type:   Direct-Access                    ANSI SCSI revision: 02
Host: scsi0 Channel: 00 Id: 00 Lun: 122
  Vendor: EMC      Model: SYMMETRIX        Rev: abc3
  Type:   Direct-Access                    ANSI SCSI revision: 02

 # dmesg | grep -i "attached"

Linux command to find the attached scsi devices

 # cat /proc/scsi/scsi

 # multipath -l

Powermt command to dispaly all the attachec devices

 # powermt display dev=all

 # ls -l /dev/emcpower? 

 # ls -l /dev/emcpower??

OUTPUT

brw------- 1 root root 120, 1968 May 16 15:07 /dev/emcpowerdt

To find the host number

 # ls -l /sys/class/scsi_host/host?

The topic on Linux - Find a server is assigned with lun or not is posted by - Math

Hope you have enjoyed, Linux - Find a server is assigned with lun or notThanks for your time