Storage : Verifying STMS (mpxio) Health

The steps below will help confirm that STMS is being used and both paths are seen.
1. Validate that STMS is enabled:

Check that the mpxio-disable parameter is set to “no”.
*Solaris[TM] 7,8,9 — check /kernel/drv/scsi_vhci.conf
*Solaris[TM] 10 only — /kernel/drv/fp.conf

Example: mpxio-disable=”no”;

If mpxio-disable is set to “yes” in the scsi_vhci.conf or fp.conf file, STMS is disabled for the entire system, no matter what. Change the value to “no” to enable mpxio for the entire system and reconfigure reboot the host if STMS is the desired failover software.
2. Validate that the Logical paths exist:

Use the “luxadm probe” command to verify that the logical paths to the devices are available.

T3 Example:

# luxadm probe
No Network Array enclosures found in /dev/es
Found Fibre Channel device(s):
Node WWN: 50020f200000c21e Device Type:Disk device
Logical Path: /dev/rdsk/c3t60020F200000C21E43E8E3BA00029D48d0s2
Node WWN: 50020f20000035df Device Type:Disk devive
Logical Path: /dev/rdsk/c3t60020F200000C21E43E8E3DC0008B758d0s2

3510 Example:

# luxadm probe
No Network Array enclosures found in /dev/es

Found Fibre Channel device:
Node WWN:206000c0ff000f26 Device Type:Disk device
Logical Path:/dev/rdsk/c2t600C0FF000000000000F264CBFBA6F00d0s2

3. Validate paths using the “luxadm display” command.

Check that the primary and secondary paths are configured.

T3 Example:

# luxadm display /dev/rdsk/c3t60020F200000C21E43E8E3BA00029D48d0s2
DEVICE PROPERTIES for disk:dev/rdsk/c3t60020F200000C21E43E8E3BA00029D48d0s2
Vendor: SUN
Product ID: T300
Revision: 0301
Serial Num: Unsupported
Unformatted capacity: 51205.500 Mbytes
Write Cache: Enabled
Read Cache: Enabled
Minimum prefetch: 0x0
Maximum prefetch: 0x0
Device Type: Disk device
Path(s):

/dev/rdsk/c3t60020F200000C21E43E8E3BA00029D48d0s2
/devices/scsi_vhci/ssd@g60020f200000c21e43e8e3ba00029d48:c,raw Controller
/devices/pci@1f,0/pci@1/SUNW,qlc@3/fp@0,0

Device Address 50020f23000035df,0
Host controller port WWN 210000e08b09b58c
Class secondary
State STANDBY
Controller /devices/pci@1f, 0/pci@1/SUNW,qlc@3,1/fp@0,0
Device Address 50020f230000c21e,0
Host controller port WWN 210100e08b29b58c
Class primary
State ONLINE

3510 Example:

# luxadm display /dev/rdsk/c2t600C0FF000000000000F264CBFBA6F00d0s2 DEVICE PROPERTIES for disk: /dev/rdsk/c2t600C0FF000000000000F264CBFBA6F00d0s2
Vendor: SUN
Product ID: StorEdge 3510
Revision: 415F
Serial Num: 000F264CBFBA
Unformatted capacity: 241332.000 Mbytes
Write Cache: Enabled
Read Cache: Enabled
Minimum prefetch: 0x0
Maximum prefetch: 0xffff
Device Type: Disk device
Path(s):

/dev/rdsk/c2t600C0FF000000000000F264CBFBA6F00d0s2
devices/scsi_vhci/ssd@g600c0ff000000000000f264cbfba6f00:c,raw
Controller /devices/pci@1f,4000/SUNW,qlc@4,1/fp@0,0
Device Address 256000c0ffc00f26,0
Host controller port WWN 210100e08b27eaa6
Class primary
State ONLINE

5. Validate that the correct array is being accessed.

For T3 , compare the output of “port list” with the WWN recorded ( luxadm -e dumpmap) in step 2 of How to verify HBA Connectivity.

Example:

storage-t3b:/:port list

port targetid addr_type status host wwn
u1p1 1 hard online sun 50020f230000c21e
u2p1 2 hard online sun 50020f23000035df
For 351x , compare the output of “show port” with the WWN recorded ( luxadm -e dumpmap ) in step 2 of How to verify HBA Connectivity.

Example:

# luxadm -e dump_map
dev/rdsk/c2t600C0FF000000000000F264CBFBA6F00d0s2
Pos AL_PA ID Hard_Addr Port WWN Node WWN Type
0 1 7d 0 210100e08b27eaa6 200100e08b27eaa6 0x1f (UnknownType,Host Bus Adapter)
1 9f 2c 9f 256000c0ffc00f26 206000c0ff000f26 0x0 (Disk device)
sccli> show port
Ch Id WWPN