IBM S1000-007 - IBM AIX v7 Administrator Specialty

The cfgmgr command updates the system configuration database with the current configuration of the devices attached to the system. When the SAN administrator increases the size of a LUN device (hdisk), it is not automatically reflected on the AIX LPAR. Running the cfgmgr command updates the system with the new size information and makes it visible to the system administrator.

The mkps command creates a paging space and activates it when the system is rebooted. This is explained in the IBM AIX v7 Administrator Specialty Study Guide, under the topic "Creating and Activating a Paging Space".

The "lslpp" command can be used to display information about filesets installed on an AIX system. To determine which files are included in the "useful_fileset" fileset, the administrator can run the following command:

lslpp -f useful_fileset

This command will display detailed information about the "useful_fileset" fileset, including a list of the files that are included in the fileset. This information can be useful for verifying the installation of the fileset and for troubleshooting problems that may be related to the fileset.

Thecrusuer sugroups=system rootcommand limits root user access to only members of the group calledsystem. This command sets the secondary groups (sugroups) for the root user to include only thesystemgroup, thereby restricting root access to users within that group.References:= IBM AIX Security Documentation

The commandvmstat -vis used to review the cumulative count of blocked I/Os. This command provides various virtual memory statistics, including information about blocked I/Os, which helps indiagnosing performance issues related to input/output operations.References:= IBM AIX vmstat Command Documentation

To unconfigure a device and remove its definition from the Customized Devices object class in AIX, the commandrmdev -dl rmtOis used. The-doption indicates the removal of the device definition, and the-loption specifies the logical name of the device. This command ensures that both the device configuration and its definition are deleted from the system.References:= IBM AIX Documentation

Configuring both ethernet adapters as IEEE 802.3ad link aggregated withsrc_dst_portmode provides network resilience and better performance. This configuration uses link aggregation to combine the two adapters into a single logical interface, which balances the traffic load and provides redundancy in case one adapter fails.References:= IBM AIX Link Aggregation Documentation

Thesmit.scriptfile records all commands executed through SMIT (System Management Interface Tool). By checking this file, the administrator can find the exact command that was run previously. This log file is useful for auditing and replicating commands executed via SMIT.References:= IBM AIX Documentation

To resolve the issue with the power supply, the administrator should rundiagwith the option to log the repair action. This command will allow the system to acknowledge the hardware replacement and update the hardware error log, thus preventing further false reports regarding the power supply problem.References:= IBM AIX Diagnostic Documentation

Thelparstat -icommand lists both the implemented and defined resources of a Logical Partition (LPAR). This includes information about the partition's processors, memory, and other resources, providing a comprehensive overview of the LPAR's configuration and resource allocation.References:= IBM AIX Documentation