Enhanced Scalability Installation and Administration Guide – SC 6. Press Enter. The system adds these values to the HACMP for AIX ODM and. Product Guide, P/N HACMP for AIX Administration Guide, HACMP for AIX Geographic LVM: Planning and Administration Guide. Selection from Guide to IBM PowerHA SystemMirror for AIX Version [Book] PowerHA SystemMirror ยท Rolling migration from PowerHA SystemMirror to PowerHA SystemMirror (AIX TL3 or Administration.

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You may schedule this command through cron to get a regular up to date version. Finally, the major number should be set in the example below: Operation is not allowed because vg is a RAID concurrent volume group.

If it continues to be a problem, then stop HACMP on both nodes, export the volume group and re-import the volume group on both nodes, and then restart the cluster. Subsystem PID is The only exception to this is mounting the filesystem read-only, where files or directories can’t be changed.

UNIX Health Check – PowerHA / HACMP

PowerHA version 7 starting with version 7. We’ve written a script for this purpose. Monitor the status for all clusters, sites, nodes, and resource groups in your environment. For the purpose of this article, hacp assume major number 57 is available. In AIX and a new feature called “Mount Guard” has been added to prevent simultaneous or concurrent mounts.


If the event occurred because of an error or issue in your environment, you can read suggested solutions to fix the problem. There’s a script which is also easy to use.

This still doesn’t provide an overview in a single look, as the clstat. Scan event summaries and read a detailed description for each event.

In the case of SAN storage, please ensure that your storage administrator adds the storage to both nodes of the cluster.

Guide to IBM PowerHA SystemMirror for AIX Version [Book]

IBM included a clstat. Search and compare log files.

Using the IP addresses of a cluster and the snmpinfo command, you can remotely retrieve cluster status information, and use that information to build a webpage. You can download it here: A description of the possible cluster states: There are a admiinstration of possible causes: Cannot mount guarded filesystem. If the time on the reference clock is behind the time of the system clock, the system clock will be set backwards causing the adminidtration time period to be passed twice.

Guide to IBM PowerHA SystemMirror for AIX Version 7.1.3

Next, buide a logical volume adjust per your situation and preference: You’re probably familiar with the clstat or the xclstat commands. To determine the mount guard state of a filesystem: In this case the guard state can be temporarily overridden by the “noguard” option to the mount command: The command needed to generate the report is clmgr. The filesystem is potentially mounted on another node After a system crash the adminjstration may still have mount flags enabled and refuse to be mounted.

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This tiny but effective tool accepts the following flags: This can be done while the cluster is up and running: In its default configuration, NTP will periodically update the system time to match a reference clock by resetting the system time on the node.

On the other node, run the importvg command to import the volume group which also imports the information about any logical volumes and file systems configured in that volume groupusing the PVID of one of the disks, and the major number previously defined, for example: Now, this may differ for the type of storage used so please make sure to check your storage vendor’s recommendations on this topicbut a good starting point is for example, for disk hdisk4: If you run into the following error: