sys64738

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====== SAN / SAN LUN information ======

===== List the multipathing support =====

  mpathadm list mpath-support
  mpath-support:  libmpscsi_vhci.so
  
Choose the mpath support name from the output list

===== List the multipathing support properties =====

  mpathadm show mpath-support libmpscsi_vhci.so
  mpath-support:  libmpscsi_vhci.so
        Vendor:  Sun Microsystems
        Driver Name:  scsi_vhci
        Default Load Balance:  round-robin
        Supported Load Balance Types:  
                round-robin
                logical-block
        Allows To Activate Target Port Group Access:  yes
        Allows Path Override:  no
        Supported Auto Failback Config:  1
        Auto Failback:  on
        Failback Polling Rate (current/max):  0/0
        Supported Auto Probing Config:  0
        Auto Probing:  NA
        Probing Polling Rate (current/max):  NA/NA
        Supported Devices:
                Vendor:  SUN     
                Product:  T300            
                Revision:  
                Supported Load Balance Types:
                        round-robin
        ....
        ....


===== To Get a List of Logical Units Discovered on the System =====

  mpathadm list lu
        /dev/rdsk/c4t600A0B8000505B5000000D304C10C46Dd0s2
                Total Path Count: 4
                Operational Path Count: 4
        /dev/rdsk/c4t600A0B8000505B5000000D2F4C10C3EDd0s2
                Total Path Count: 4
                Operational Path Count: 4
        /dev/rdsk/c4t600A0B8000505B5000000D2D4C10C34Dd0s2
                Total Path Count: 4
                Operational Path Count: 4

Select a logical unit name from the output.

  mpathadm show lu /dev/rdsk/c4t600A0B8000505B5000000D304C10C46Dd0s2
    Logical Unit:  /dev/rdsk/c4t600A0B8000505B5000000D304C10C46Dd0s2
        mpath-support:  libmpscsi_vhci.so
        Vendor:  IBM     
        Product:  1814      FAStT 
        Revision:  0916
        Name Type:  unknown type
        Name:  600a0b8000505b5000000d304c10c46d
        Asymmetric:  yes
        Current Load Balance:  round-robin
        Logical Unit Group ID:  NA
        Auto Failback:  on
        Auto Probing:  NA

        Paths:  
                Initiator Port Name:  210000e08b945795
                Target Port Name:  200500a0b8505d67
                Override Path:  NA
                Path State:  OK
                Disabled:  no

                Initiator Port Name:  210000e08b945795
                Target Port Name:  200400a0b8505d67
                Override Path:  NA
                Path State:  OK
                Disabled:  no

                Initiator Port Name:  210000e08b94ec9a
                Target Port Name:  200500a0b8505d68
                Override Path:  NA
                Path State:  OK
                Disabled:  no

                Initiator Port Name:  210000e08b94ec9a
                Target Port Name:  200400a0b8505d68
                Override Path:  NA
                Path State:  OK
                Disabled:  no

        Target Port Groups:  
                ID:  1
                Explicit Failover:  yes
                Access State:  standby
                Target Ports:
                        Name:  200500a0b8505d67
                        Relative ID:  0

                        Name:  200500a0b8505d68
                        Relative ID:  0

                ID:  2
                Explicit Failover:  yes
                Access State:  active
                Target Ports:
                        Name:  200400a0b8505d67
                        Relative ID:  0

                        Name:  200400a0b8505d68
                        Relative ID:  0


===== Fail Over a Logical Unit =====

This operation is applicable only to devices in the following two categories:
  * Unordered List ItemAsymmetric devices with a proprietary failover mechanism recognized and supported by multipathing support
  * Unordered List ItemDevices conforming to the T10 Standard Target Port Group Support libmpscsi_vhci.so and providing explicit mode asymmetric logical unit access

  mpathadm show lu <logical-unit-name command>

Example:
    Logical Unit:  /dev/rdsk/c4t600A0B8000505B5000000D304C10C46Dd0s2

mpath-support:  **libmpscsi_vhci.so** \\
Vendor:  IBM \\
Product:  1814      FAStT \\
Revision:  0916 \\
Name Type:  unknown type \\
Name:  600a0b8000505b5000000d304c10c46d \\
** Asymmetric:  yes** \\
.... \\
.... \\
ID:  1  \\
Explicit Failover:  yes \\
Access State:  **standby** \\
Target Ports: \\
Name:  200500a0b8505d67 \\
Relative ID:  0 \\
Name:  200500a0b8505d68 \\
Relative ID:  0 \\
ID:  2 \\
Explicit Failover:  yes \\
Access State:  **active** \\
Target Ports: \\
Name:  200400a0b8505d67 \\
Relative ID:  0 \\
Name:  200400a0b8505d68 \\
Relative ID:  0 \\

  mpathadm failover lu <logical-unit-name command>

Example:
  mpathadm failover lu /dev/rdsk/c4t600A0B8000505B5000000D304C10C46Dd0s2
  

==== verify the access state change ====


  mpathadm show lu logical-unit-name 

.... \\
.... \\
Target Port Groups: \\
ID:  1 \\
Explicit Failover:  yes \\
Access State:  **active** \\
Target Ports: \\
Name:  200500a0b8505d67 \\
Relative ID:  0 \\
Name:  200500a0b8505d68 \\
Relative ID:  0 \\
ID:  2 \\
Explicit Failover:  yes \\
Access State: ** standby ** \\
Target Ports: \\
Name:  200400a0b8505d67 \\
Relative ID:  0 \\
Name:  200400a0b8505d68 \\
Relative ID:  0

==== Verify the access state change with luxadm ====

  luxadm display /dev/rdsk/c4t600A0B8000505B5000000D304C10C46Dd0s2

DEVICE PROPERTIES for disk: /dev/rdsk/c4t600A0B8000505B5000000D304C10C46Dd0s2 \\
Vendor:               IBM \\
Product ID:           1814      FAStT \\
Revision:             0916 \\
Serial Num:           SK82800386 \\
Unformatted capacity: 61440,000 MBytes \\
Write Cache:          Enabled \\
Read Cache:           Enabled \\
Minimum prefetch:   0xffff \\
Maximum prefetch:   0x0 \\
Device Type:          Disk device \\
Path(s): \\
/dev/rdsk/c4t600A0B8000505B5000000D304C10C46Dd0s2 \\
/devices/scsi_vhci/ssd@g600a0b8000505b5000000d304c10c46d:c,raw \\
Controller           /devices/pci@7c0/pci@0/pci@9/SUNW,qlc@0/fp@0,0 \\
Device Address              200500a0b8505d67,3 \\
Host controller port WWN    210000e08b945795 \\
Class                       primary \\
State                       **ONLINE** \\
Controller           /devices/pci@7c0/pci@0/pci@9/SUNW,qlc@0/fp@0,0 \\
Device Address              200400a0b8505d67,3 \\
Host controller port WWN    210000e08b945795 \\
Class                       secondary \\
State                       **STANDBY** \\
Controller           /devices/pci@7c0/pci@0/pci@8/SUNW,qlc@0/fp@0,0 \\
Device Address              200500a0b8505d68,3 \\
Host controller port WWN    210000e08b94ec9a \\
Class                       primary \\
State                       **ONLINE** \\
Controller           /devices/pci@7c0/pci@0/pci@8/SUNW,qlc@0/fp@0,0 \\
Device Address              200400a0b8505d68,3 \\
Host controller port WWN    210000e08b94ec9a \\
Class                       secondary \\
State                       **STANDBY** \\

===== Luxadm port information =====

  luxadm -e port
  
  /devices/pci@7c0/pci@0/pci@8/SUNW,qlc@0/fp@0,0:devctl              CONNECTED
  /devices/pci@7c0/pci@0/pci@9/SUNW,qlc@0/fp@0,0:devctl              CONNECTED

===== Luxadm dump map information =====  

  luxadm -e dump_map /devices/pci@7c0/pci@0/pci@9/SUNW,qlc@0/fp@0,0:devctl
  
  Pos  Port_ID Hard_Addr Port WWN         Node WWN         Type\\
  0    10100   0         202900a0b82acd3c 200800a0b82acd3c 0x0  (Disk device)
  1    10200   0         210000e08b94d494 200000e08b94d494 0x1f (Unknown Type,Host Bus Adapter)

devices = output from luxadm -e port

===== wwn information from prtconf  =====

  prtconf -vp |grep -i wwn
  port-wwn:  210000e0.8b899dec
  node-wwn:  200000e0.8b899dec
  port-wwn:  210000e0.8b94d494
  node-wwn:  200000e0.8b94d494

[[http://download.oracle.com/docs/cd/E19253-01/820-1931/agkax/index.html]]
sys64738

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