Red Hat DEVICE-MAPPER MULTIPATH 5.2 Manual de usuario descargar pdf (Pagina 21)

4.2.2 Checking the device-mapper multipath Status and Created Devices

Check the path status using the "multipath -ll" command. Check that the recognized status of the devices for

all the paths that are assigned to the server is normal.

•

Multipath is in normal status (This example shows when two paths are used to connect to the ETERNUS

DX410)

Check that multipathing is configured in the two block devices and "active ready" is displayed for each path

status.

# multipath -ll

mpathb (36000b5d0006a0000006a0317000a0000) dm-2 FUJITSU,ETERNUS_DX400

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

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

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

`- 4:0:0:1 sde 8:64 active ready running

When the path status is normal,

"active ready" is displayed.

Two block device names are displayed

for a two-path configuration.

•

Multipath (the "3:0:0:X" side) is in error status (This example shows when two paths are used to connect to

the ETERNUS DX410)

# multipath -ll

mpathb (36000b5d0006a0000006a0317000a0000) dm-2 FUJITSU,ETERNUS_DX400

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

The status for the failed path may

not be displayed depending on the

OS version.

Chapter 4 For SUSE Linux Enterprise Server 12 or SUSE Linux Enterprise Server 11

4.2 Checking the device-mapper multipath

FUJITSU Storage ETERNUS DX Configuration Guide -Server Connection-

(Fibre Channel/FCoE/iSCSI/SAS) for Linux

P3AM-3912-21ENZ0

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Red Hat DEVICE-MAPPER MULTIPATH 5.2 Manual de usuario Pagina 21