
Chapter 7 ETERNUS Disk Storage System Logical Unit Recognition
> 7.3 Rebooting the Linux Server
ETERNUS Disk storage systems Server Connection Guide (iSCSI) for Linux
(Red Hat Enterprise Linux)
20
Copyright 2010 FUJITSU LIMITED
P3AM-4142-02ENZ0
Command execution example
7.3 Rebooting the Linux Server
Reboot the Linux server.
Execution example
7.4 Checking the Pre-Device-Mapper Multipathing LUNs
After rebooting, check that the Linux server recognizes the ETERNUS Disk storage system
LUNs.
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 Disk storage systems' LUNs. For
example, if there is one internal SCSI disk and three ETERNUS Disk storage system LUNs,
SCSI device names are assigned as follows:
# iscsiadm -m node -T iqn.2000-09.com.fujitsu:... -p 172.16.254.1:3260 -l
Login session [iface: default, target: iqn.2000-09.com.fujitsu:...,
portal: 172.16.254.1,3260]
# shutdown -r now
SCSI device name by-id name Explanation
dev/sda
/dev/disk/by-id/scsi-
36003005700026cc011251e4b0b80ac59
Internal SCSI disk
/dev/sdb
/dev/disk/by-id/scsi-
3600000e00d0000000001000000000000
ETERNUS Disk storage systems'
LUN
/dev/sdc
/dev/disk/by-id/scsi-
3600000e00d0000000001000000010000
/dev/sdd
/dev/disk/by-id/scsi-
3600000e00d0000000001000000020000
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