Sponsored Content
Operating Systems AIX PowerHA(HACMP) full vg loss - cluster hangs on release_vg_fs event Post 302791797 by vilius on Tuesday 9th of April 2013 08:00:58 AM
Old 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

Duplicate IP address makes PowerHA ( HACMP ) down

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

Solaris Cluster Install Hangs

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

MQ upgrade(ver.6to7) in a HACMP cluster

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

Should GPFS be configured before/after configuring HACMP for 2 node Cluster?

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

Interoperability Oracle Clusterware - PowerHA/HACMP

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

PowerHA HACMP on VIOS servers

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

[Howto] Update AIX in HACMP cluster-nodes

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

Re-cluster 2 HACMP 5.2 nodes

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

Thoughts on HACMP: Automatic start of cluster services

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

Clstat not working in a HACMP 7.1.3 cluster

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
clinfo(1M)						  System Administration Commands						clinfo(1M)

NAME
clinfo - display cluster information SYNOPSIS
clinfo [-nh] DESCRIPTION
The clinfo command displays cluster configuration information about the node from which the command is executed. Without arguments, clinfo returns an exit status of 0 if the node is configured and booted as part of a cluster. Otherwise, clinfo returns an exit status of 1. OPTIONS
The following options are supported: -h Displays the highest node number allowed to be configured. This is different from the maximum number of nodes supported in a given cluster. The current highest configured node number can change immediately after the command returns since new nodes can be dynam- ically added to a running cluster. For example, clinfo -h might return 64, meaning that the highest number you can use to identify a node is 64. See the Sun Cluster 3.0 System Administration Guide for a description of utilities you can use to determine the number of nodes in a cluster. -n Prints the number of the node from which clinfo is executed. EXIT STATUS
The following exit values are returned: 0 Successful completion. 1 An error occurred. This is usually because the node is not configured or booted as part of a cluster. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ SEE ALSO
attributes(5) SunOS 5.10 12 Mar 2002 clinfo(1M)
All times are GMT -4. The time now is 01:34 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy