IP multipathing on Solaris 10 with Hanic (NIC Redundancy with one IP)

Hendrawan — Sat, 25 Apr 2009 09:20:55 +0000

Hanic ?
Do you know what's that.
Yes, Hanic is NIC Redundancy with one IP, hanic was made by "Partha Subramanian", and based on perl, hanic more simply and powerfull than IPMP, the default solaris IP multipathing. Why hanic was simply, in hanic we unnecessary to defined all requirement for respective NIC , just install, run and ready to failover.

Bellow, this is the step by step for hanic used.

1. First of all, we must got the hanic source as usually

bash> wget http://www.sun.com/bigadmin/scripts/submittedScripts/hanic.tar.gz

2. Show your NIC for me

bash> ifconfig e1000g0 plumb
bash> ifconifg e1000g1 plumb

bash> vi /etc/hosts
192.168.85.3    training.bascomp.org    training

3. Install hanic on your system

bash> gunzip hanic.tar.gz|tar xvf -
bash> cd hanic
bash> chmod +x *
bash> ./hanic.install

As usually software installation you must follow the guide, something like this.
Define your primary and secondary NIC, type your IP Address, your netmask and then reboot your system, for completed the installation.

bash> init 6

4. Failover IP Address

bash> hanic -monitor;hanic -cleanup
bash> hanic -status
 
STATUS - HA NIC Monitoring
-------------------------------------------------
State       Active(Passive)    PID
-------------------------------------------------
Running     e1000g1(e1000g0)   1081
-------------------------------------------------

Oke. seem to be hanic work as predictable, furthermore we test the fail over with "switch" command, whereabout "switch" do the switch ip address from primary NIC to secondary NIC.

bash> ifconfig -a
e1000g1: flags=1000843&lt;UP,BROADCAST,RUNNING,MULTICAST,IPv4&gt; mtu 1500 index 6
inet 192.168.85.3 netmask ffffff00 broadcast 192.168.85.255
ether 8:0:27:86:2e:c4

bash> hanic -status
 
STATUS - HA NIC Monitoring
-------------------------------------------------
State       Active(Passive)    PID
-------------------------------------------------
Running     e1000g1(e1000g0)   1081
-------------------------------------------------

bash> hanic -switch
 
bash> hanic -status
 
STATUS - HA NIC Monitoring
-------------------------------------------------
State       Active(Passive)    PID
-------------------------------------------------
Running     e1000g0(e1000g1)   1081
-------------------------------------------------
 
bash> ifconfig -a
e1000g0: flags=1000843&lt;UP,BROADCAST,RUNNING,MULTICAST,IPv4&gt; mtu 1500 index 7
inet 192.168.85.3 netmask ffffff00 broadcast 192.168.85.255
ether 8:0:27:82:21:80

5. Failover offline interface
Oke works perfect ha, now lets start second trial, for this situation try to offline the active network interface, and see what's going, for monitoring this trial, you can see wheter the connection drop or not with ping command.

bash> ifconfig -a
e1000g0: flags=1000843&lt;UP,BROADCAST,RUNNING,MULTICAST,IPv4&gt; mtu 1500 index 3
inet 192.168.85.3 netmask ffffff00 broadcast 192.168.85.255
ether 8:0:27:82:21:80
 
bash> hanic -offline
 
bash> ifconfig -a
e1000g1: flags=1000843&lt;UP,BROADCAST,RUNNING,MULTICAST,IPv4&gt; mtu 1500 index 4
inet 192.168.85.3 netmask ffffff00 broadcast 192.168.85.255
ether 8:0:27:86:2e:c4
 
bash> hanic -status
 
STATUS - HA NIC Monitoring
-------------------------------------------------
State       Active(Passive)    PID
-------------------------------------------------
Running     e1000g1(e1000g0)   1081
-------------------------------------------------

Source from: http://dot.choosen.net/2009/04/06/ip-multipathing-on-solaris-10-with-hanic-nic-redundancy-with-one-ip/

PowerPath show "unlic" status

Hendrawan — Mon, 23 Mar 2009 13:02:32 +0000

Unlic indicates that unlicensed PowerPath is running for a CLARiiON array (no license key has been installed), Unlicensed defaults to "basic Fail/Over policy, we made change yet.

bash> powermt display dev=emcpower0a|grep policy
state=alive; policy=BasicFailover; priority=0; queued-IOs=0

bash> powermt display dev=emcpower0a
Pseudo name=emcpower0a
CLARiiON ID=CK200071500374 [SERVER]
Logical device ID=60060160F0CE1A00185D33F95722DD11 [LUN 25 SERVER]
state=alive; policy=BasicFailover; priority=0; queued-IOs=0
Owner: default=SP B, current=SP B       Array failover mode: 1
==============================================================================
---------------- Host ---------------   - Stor -   -- I/O Path -  -- Stats ---
###  HW Path                I/O Paths    Interf.   Mode    State  Q-IOs Errors
==============================================================================
3072 pci@8,700000/SUNW,qlc@3/fp@0,0 c5t5006016239A02677d0s0 SP A2     active  alive      0      0
3072 pci@8,700000/SUNW,qlc@3/fp@0,0 c5t5006016A39A02677d0s0 SP B2     active  alive      0      0
3074 pci@8,700000/SUNW,qlc@3,1/fp@0,0 c6t5006016339A02677d0s0 SP A3     unlic   alive      0      0
3074 pci@8,700000/SUNW,qlc@3,1/fp@0,0 c6t5006016B39A02677d0s0 SP B3     unlic   alive      0      0

Workaround
1. powermt check_registration
2. powermt set policy=co dev=all (Set the Policy to co = Clariion Optimization)
3. powermt display dev=all
4. powermt save

bash> powermt display dev=emcpower0a|grep policy
state=alive; policy=CLAROpt; priority=0; queued-IOs=0

bash> powermt display dev=emcpower0a
Pseudo name=emcpower0a
CLARiiON ID=CK200071500374 [SERVER]
Logical device ID=60060160F0CE1A00185D33F95722DD11 [LUN 25 SERVER]
state=alive; policy=CLAROpt; priority=0; queued-IOs=0
Owner: default=SP B, current=SP B       Array failover mode: 1
==============================================================================
---------------- Host ---------------   - Stor -   -- I/O Path -  -- Stats ---
###  HW Path                I/O Paths    Interf.   Mode    State  Q-IOs Errors
==============================================================================
3072 pci@8,700000/SUNW,qlc@3/fp@0,0 c5t5006016239A02677d0s0 SP A2     active  alive      0      0
3072 pci@8,700000/SUNW,qlc@3/fp@0,0 c5t5006016A39A02677d0s0 SP B2     active  alive      0      0
3074 pci@8,700000/SUNW,qlc@3,1/fp@0,0 c6t5006016339A02677d0s0 SP A3     active  alive      0      0
3074 pci@8,700000/SUNW,qlc@3,1/fp@0,0 c6t5006016B39A02677d0s0 SP B3     active  alive      0      0

Sys-Admin Information's » Multipath I/O

IP multipathing on Solaris 10 with Hanic (NIC Redundancy with one IP)

PowerPath show "unlic" status