Fujitsu ETERNUS4000 500 Server Connection Manual - Page 23

Browse online or download pdf Server Connection Manual for Storage Fujitsu ETERNUS4000 500. Fujitsu ETERNUS4000 500 25 pages. Disk storage systems (fibre channel) for oracle solaris
Also for Fujitsu ETERNUS4000 500: Manual (28 pages), Manual (21 pages), Server Connection Manual (32 pages), Connection Manual (19 pages)

Fujitsu ETERNUS4000 500 Server Connection Manual
Chapter 9 Setting Up and Checking the device-mapper multipath
>

9.4 Recognizing the Post device-mapper multipath LUNs

9.4
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.
Execution 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
9.5
Checking the device-mapper multipath Status
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
:
:
For SLES10, the following message may appear in the path status after executing the "multipath
-ll" command. However, there is no actual problem with multipath configuration and operation.
sde: Using deprecated prio_callout '/sbin/mpath_prio_alua %d' (controller setting)
sdc: Using deprecated prio_callout '/sbin/mpath_prio_alua %d' (controller setting)
P3AM-4152-02ENZ0
ETERNUS Disk storage systems Server Connection Guide (iSCSI) for Linux
(SUSE Linux Enterprise Server)
:
'- 3:0:0:1 sdc 8:32 active ready running
Two block device names are displayed
for a two-path configuration.
Please fixup /etc/multipath.conf
Please fixup /etc/multipath.conf
E2000 is displayed since the
ETERNUS2000 is connected.
When the path status is normal,
"active ready" is displayed.
23
Copyright 2010 FUJITSU LIMITED