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Supported Load Balance Types: | Supported Load Balance Types: | ||
round-robin | 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]] |