04-09-2013
PowerHA(HACMP) full vg loss - cluster hangs on "release_vg_fs" event
Hello,
AIX 6.1 TL7 SP6
POwerHA 6.1 SP10
I was experimenting with new hacmp build. It's 3-node cluster build on AIX 6.1 lpars. It contains Ethernet and diskhb networks. Shared vg disk is SAN disk. Two nodes see disk using vscsi, third node sees disk using npiv. Application is db2 server.
Most accidents usually involve some kind of network failure - so I decided to test my cluster against Ethernet failure and SAN failure. Ethernet failure test was successful - when node lost Ethernet connectivity(both cables of course) my resource group jumped to next node with no problem.
Next I did SAN failure test:
I did it in 2 different ways by removing vsci mapping in vios or by removing fcs mapping in vios(npiv case) - results were exactly the same in both cases - cluster reacted correctly and started release_vg_fs event, release_vg_fs script tried to unmount filesystems but since all fs disk devices were gone script just hung, and cluster started issuing config_too_long events..
So clstat reports resouce group as "RELEASING.." and that's it...
How do I configure PowerHA to handle full vg loss(for example SAN down causes that) correctly ??
thanks,
Vilius M.
Last edited by vilius; 04-09-2013 at 09:17 AM..
10 More Discussions You Might Find Interesting
1. AIX
Hello,
I would like to know if anyone has faced this problem. Whenever there is a duplicate IP address, HACMP goes down infact HACMP ( PowerHA ) takes the whole system down.
Does anyone know how to solve this problem ? (3 Replies)
Discussion started by: filosophizer
3 Replies
2. Solaris
Greetings Forumers!
I tried installing Solaris Cluster 3.3 today. I should say I tried configuring the Cluster today. The software is already installed on two systems. I am trying to configure a shared filesystem between two 6320 Blades. I selected the "Custom" install because the "Typical"... (2 Replies)
Discussion started by: bluescreen
2 Replies
3. AIX
Hi
What is the procedure to upgrade the MQ from 6 to 7 in aix hacmp cluster. Do i need to bring down the cluster
services running in both the nodes and then give #smitty installp in both the nodes separately. Please assist... (0 Replies)
Discussion started by: samsungsamsung
0 Replies
4. AIX
Hi,
I have a IBM Power series machine that has 2 VIOs and hosting 20 LPARS.
I have two LPARs on which GPFS is configured (4-5 disks)
Now these two LPARs need to be configured for HACMP (PowerHA) as well.
What is recommended? Is it possible that HACMP can be done on this config or do i... (1 Reply)
Discussion started by: aixromeo
1 Replies
5. AIX
I am planning for building a new database server using AIX 6.1 and Oracle 11.2 using ASM.
As i have learned starting with Oracle 11.2 ASM can only be used in conjunction with Clusterware, which is Oracles HA-software. As is the companies policy we do intend to use PowerHA as HA-solution instead... (1 Reply)
Discussion started by: bakunin
1 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
As i have updated a lot of HACMP-nodes lately the question arises how to do it with minimal downtime. Of course it is easily possible to have a downtime and do the version update during this. In the best of worlds you always get the downtime you need - unfortunately we have yet to find this best of... (4 Replies)
Discussion started by: bakunin
4 Replies
8. AIX
Hi,
A customer I'm supporting once upon a time broke their 2 cluster node database servers so they could use the 2nd standby node for something else. Now sometime later they want to bring the 2nd node back into the cluster for resilance. Problem is there are now 3 VG's that have been set-up... (1 Reply)
Discussion started by: elcounto
1 Replies
9. AIX
Hi all,
I remember way back in some old environment, having the HA cluster services not being started automatically at startup, ie. no entry in /etc/inittab.
I remember reason was (taken a 2 node active/passive cluster), to avoid having a backup node being booted, so that it will not... (4 Replies)
Discussion started by: zaxxon
4 Replies
10. AIX
I have troubles making clstat work. All the "usual suspects" have been covered but still no luck. The topology is a two-node active/passive with only one network-interface (it is a test-setup). The application running is SAP with DB/2 as database. We do not use SmartAssists or other gadgets.
... (8 Replies)
Discussion started by: bakunin
8 Replies
LEARN ABOUT DEBIAN
crm_node
PACEMAKER(8) System Administration Utilities PACEMAKER(8)
NAME
Pacemaker - Part of the Pacemaker cluster resource manager
SYNOPSIS
crm_node command [options]
DESCRIPTION
crm_node - Tool for displaying low-level node information
OPTIONS
-?, --help
This text
-$, --version
Version information
-V, --verbose
Increase debug output
-Q, --quiet
Essential output only
Stack:
-A, --openais
Only try connecting to an OpenAIS-based cluster
-H, --heartbeat
Only try connecting to a Heartbeat-based cluster
Commands:
-e, --epoch
Display the epoch during which this node joined the cluster
-q, --quorum
Display a 1 if our partition has quorum, 0 if not
-l, --list
Display all known members (past and present) of this cluster (Not available for heartbeat clusters)
-p, --partition
Display the members of this partition
-i, --cluster-id
Display this node's cluster id
-R, --remove=value
(Advanced, AIS-Only) Remove the (stopped) node with the specified nodeid from the cluster
Additional Options:
-f, --force
AUTHOR
Written by Andrew Beekhof
REPORTING BUGS
Report bugs to pacemaker@oss.clusterlabs.org
Pacemaker 1.1.7 April 2012 PACEMAKER(8)