Fujitsu P3AM-3842-05ENZ0 manual Logical Unit Recognition, Displaying the Recognized Logical Units

Chapter 9 Logical Unit Recognition

At boot up, Linux automatically recognizes all SCSI disks and assigns them successive device names starting from "sda". When assigning the device names, any internal SCSI disks are assigned first, followed by the assignment of the ETERNUS DX Disk storage systems' LUNs. Example: If there is one internal SCSI disk, it is assigned a SCSI device name as follows:

SCSI device name	by-id name (Example)	Explanation
/dev/sda	/dev/disk/by-id/scsi-	Internal SCSI disk
	36003005700ac3fc013746ef6315e42c4
	/dev/disk/by-id/scsi-
	3600000e00d0000000000042200000000	ETERNUS DX Disk storage
/dev/sdb or later	/dev/disk/by-id/scsi-
		systems' LUN
	3600000e00d0000000000042200010000
	:

9.1Displaying 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:

9.1.1For 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:

P3AM-3842-05ENZ0 ETERNUS DX Disk storage systems Server Connection Guide (Fibre Channel) for Linux

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