content_image/1014196.jpg
[ROHALOG:2490918:(19.227)] ============ End ============== [ROHALOG:2490918:(19.231)] INFO: received error code 21. [ROHALOG:2490918:(19.233)] No or no more reassessment. [ROHALOG:2490918:(19.241)] An error occurred while performing acquire operation. 

PowerHA SystemMirror simulates the resource acquisition process based on the current configuration and generates the log in the ver_collect_dlpar.log  file. 

## Logs for resource group online and offline 

During the process of resource online or offline, the hacmp.out  and the async_release.log logs are useful for monitoring or debugging. In some RG offline scenarios, the DLPAR remove operation is a synchronous process. In this case, PowerHA SystemMirror generates the DLPAR operation logs in the async_release.log  file. In a synchronous process, only hacmp.out  is used. 

## AIX errpt output 

Sometimes, the DLPAR operation fails, and AIX generates some errors that are found in the errpt output, as shown in Example 6-47. 

<img src='content_image/1014196.jpg'>

You can identify the root cause of the failure by using this information. 

## HMC commands 

You can use the following commands on the HMC to do monitoring or maintenance. For a detailed description of the commands, see the man  page for the HMC. 

## The lshwres command 

This command shows the LPAR minimum, LPAR maximum, the total amount of memory, and the number of CPUs that are currently allocated to the LPAR values. 

## The lssyscfg command 

This command verifies that the LPAR node is DLPAR-capable. 

## The chhwres command 

This command runs the DLPAR operations on the HMC outside of PowerHA SystemMirror to manually change the LPAR minimum, LPAR minimum, and LPAR required values for the LPAR. This command might be necessary if PowerHA SystemMirror issues an error or a warning during the verification process if you requested DLPAR and CoD resources in PowerHA SystemMirror. 

## The lscod command 

This command shows the system CoD of the current configuration. 

## The chcod command 

This command runs the CoD operations on the HMC outside of PowerHA SystemMirror and manually changes the Trial CoD, On/Off CoD, and so on, of the activated resources. This command is necessary if PowerHA SystemMirror issues an error or a warning during the verification process, or if you want to use DLPAR and On/Off CoD resources in PowerHA SystemMirror. 

