Fujitsu ETERNUS2000 model 100 Manual de conexión - Página 27

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Fujitsu ETERNUS2000 model 100 Manual de conexión

Chapter 10 Setting Up and Checking the device-mapper multipath

10.2 For SLES

10.2.3

Rebooting the Linux Server

Reboot the Linux server.

Example:

# shutdown -r now

10.2.4

Recognizing the Post device-mapper multipath LUNs

Check the device file created by the device-mapper multipath.

Also check that the device file is linked to the "/dev/dm-X" file.

Example:

#cd /dev/disk/by-name/

#ls -l

lrwxrwxrwx 1 root root 10 Aug 25 13:40 mpatha -> ../../dm-0

lrwxrwxrwx 1 root root 10 Aug 25 13:40 mpathb -> ../../dm-1

lrwxrwxrwx 1 root root 10 Aug 25 13:39 mpathc -> ../../dm-2

lrwxrwxrwx 1 root root 10 Aug 25 13:39 mpathd -> ../../dm-3

lrwxrwxrwx 1 root root 10 Aug 25 13:40 mpathe -> ../../dm-4

lrwxrwxrwx 1 root root 10 Aug 25 13:39 mpathf -> ../../dm-5

lrwxrwxrwx 1 root root 10 Aug 25 13:39 mpathg -> ../../dm-6

10.2.5

Checking the device-mapper multipath Status and Created Devices

Check the path status using the "multipath -ll" command.

•

When both paths are in normal status (This example is for the ETERNUS2000)

The multipath consists of the block device

names "sde" and "sdc". "mpathc" is created.

# multipath -ll

mpathc (3600000e00d00000000000f7e00010000) dm-2 FUJITSU,E2000

size=10G features='1 queue_if_no_path' hwhandler='0' wp=rw

|-+- policy='round-robin 0' prio=150 status=active

| '- 4:0:0:1 sde 8:64 active ready running

'-+- policy='round-robin 0' prio=10 status=enabled

P3AM-4212-02ENZ0

ETERNUS2000 Disk storage systems Server Connection Guide (SAS) for Linux

'- 3:0:0:1 sdc 8:32 active ready running

Two block device names are

displayed for a two-path configuration.

"E2000" is displayed since

the ETERNUS2000 is connected.

When the path status is normal,

"active ready" is displayed.