IBM Midrange System DS4000 Series

466 IBM Midrange System Storage Hardware Guide
򐂰 Type the following command to verify the RDAC/MPP driver version:
# mppUtil -V
The Linux multipath driver version displays, as shown in Example 7-14.
Example 7-14 mppUtil -V
[root@TC-2008 ~]# mppUtil -V
Linux MPP Driver Version: 09.03.0C05.0214
򐂰 Type the following command to verify that the devices are configured with the RDAC
driver:
# ls -1R /proc/mpp
The output similar to the one shown in Example 7-15 displays:
Example 7-15 ls -1R /proc/mpp
/proc/mpp:
total 0
dr-xr-xr-x 4 root root 0 Oct 24 02:56 DS5020-sys1
crwxrwxrwx 1 root root 254, 0 Oct 24 02:56 mppVBusNode
/proc/mpp/ DS5020-sys1:
total 0
dr-xr-xr-x 3 root root 0 Oct 24 02:56 controllerA
dr-xr-xr-x 3 root root 0 Oct 24 02:56 controllerB
-rw-r--r-- 1 root root 0 Oct 24 02:56 virtualLun0
/proc/mpp/ DS5020-sys1/controllerA:
total 0
dr-xr-xr-x 2 root root 0 Oct 24 02:56 lpfc_h6c0t2
/proc/mpp/ DS5020-sys1/controllerA/lpfc_h6c0t2:
total 0
-rw-r--r-- 1 root root 0 Oct 24 02:56 LUN0
/proc/mpp/ DS5020-sys1/controllerB:
total 0
dr-xr-xr-x 2 root root 0 Oct 24 02:56 lpfc_h5c0t0
/proc/mpp/ DS5020-sys1/controllerB/lpfc_h5c0t0:
total 0
-rw-r--r-- 1 root root 0 Oct 24 02:56 LUN0
After you install the RDAC driver, the following commands and man pages are available:
򐂰 mppUtil
򐂰 mppBusRescan
򐂰 mppUpdate
򐂰 RDAC
HBA parameters in Linux
The 2.6.11 Linux kernel introduced certain changes to the lpfc (Emulex driver) and qla2xxx
(Qlogic driver) Fibre Channel Host Bus Adapter (HBA) drivers; these changes removed the
following entries from the proc pseudo-file system:
򐂰 /proc/scsi/qla2xxx
򐂰 /proc/scsi/lpfc