07-29-2014
HACMP does not deal with disks (disk devices), it only deals with volume groups. Basically, a "resource group" in HACMP is:
- a bundle of filesystems, organized in certain volume groups
- a number of processes to be started/stopped
- an (several) IP addresses to serve up data/services
When a resource group starts: the VGs are activated (varyonvg), the respective filesystems are mounted, the processes are started (via start-scripts) and the IP-address is activated on some interface.
When the resource group stops this process is reversed: the IP address is deleted from the interface, the processes are stopped (via stop-scripts) and the filesystems are unmounted, then the VGs are deactivated.
How and from what devices these VGs are built is transparent for HACMP. The only requirement is that HACMP is able to activate the VGs from every cluster node.
I hope this helps.
bakunin
10 More Discussions You Might Find Interesting
1. AIX
hi all
we upgraded hacmp(powerha) from 5.2 to 5.4 recently .
during the failover testing, we found a strange network issue. after standby node took service ip address (172.15.100.8) online at standby NIC, we were able to log in the standby node by telnet 172.15.100.8 which stays at... (1 Reply)
Discussion started by: rs6000er
1 Replies
2. AIX
I've configured multiple clusters using PowerHA 5.5, but never using the 'Two-node cluster configuration assistant'. I removed all the clusters, clean setup, and gave the assistant a try. I've filled in all the necessary options:
Communication Path to Takeover Node
Application Server
... (11 Replies)
Discussion started by: Koen87
11 Replies
3. AIX
I am new in AIX and please forgive my poor english.
I know that AIX allow same subnet IPs for different interfaces, which result in multipath routing / route striping.
My question is,
is there any best practice for the persistent and service IP with same subnet to stay on same interface, or... (5 Replies)
Discussion started by: skeyeung
5 Replies
4. AIX
Hello AIX GURU's
Can anybody tell me the steps to crate shared VG (enhanced concurent) for my Lpars from VIO server?
my questions are:
1.
Should I crate Enhanced Concurent VG in VIO and map it using virtual Scsi to Lpar?
or
2. Can I just create virtual SCSI in VIO and map to Lpar and... (1 Reply)
Discussion started by: Vit0_Corleone
1 Replies
5. AIX
Looking to find PowerHA with 3rd node used for communication (voting node) only. Does anyone use such configuration with IBM products? (2 Replies)
Discussion started by: gogogo
2 Replies
6. AIX
Few questions regarding Power HA ( previously known as HACMP) and VIOS POWERVM IVM ( IBM Virtualization I/O Server )
Is it possible to create HACMP cluster between two VIOS servers
Physical Machine_1
VIOS_SERVER_1
LPAR_1
SHARED_DISK_XX
VIOS_SERVER_2
Physical Machine_2
LPAR_2... (6 Replies)
Discussion started by: filosophizer
6 Replies
7. AIX
hello
ive installed powerha 7.1.3 on two servers aix 6.1.9 6100-09-03-1415
work with dmx4 EMC storgae.
after sync cluster ( terminate with OK ) ive see that the repository disk upper only in one machine :
hdiskpower60 00c7f6b59fc60d9d caavg_private active... (1 Reply)
Discussion started by: ariec
1 Replies
8. AIX
Hey guys, wondering if this is possible to accomplish.
PowerHA SystemMirror7.1 active/passive cluster. Restored a clustered system in test and upgraded to the latest version of PowerHA. Things are working great. However in the interest of time during cut over to the new system, I was hoping to... (4 Replies)
Discussion started by: j_aix
4 Replies
9. AIX
Hello Guys,
I was trying to upgrade the PowerHA from 6.1.0.9 to 7.1.3 in prod cluster. Have snapshot migration and run climgcheck.
1. Run climgcheck on node1(kul1pqcmur01) and it success
2. Upgrade the cluster sw
3. Run climgcheck on node2(kul1pqcmur02) and it failed with below errors
... (6 Replies)
Discussion started by: novaothers
6 Replies
10. AIX
Hi All,
As per the IBM upgrade/support matrix
IBM Techdocs Technote: PowerHA for AIX Version Compatibility Matrix
we can't do online upgrade or rolling migration from powerha v7.1.0 to v7.1.3. on AIX61_TL9_SP4, So we are following the steps as below ...
1 ) Bring down the cluster
2 )... (2 Replies)
Discussion started by: linux.amrit
2 Replies