Revert to a Previous CPU/Memory Configuration

Use this procedure to revert a compute node to a previous CPU/Memory configuration. You must perform this procedure on each member in a cluster. The tool does not automatically propagate changes to every cluster member.

1. Log in as superuser on the compute node's control domain.
2. List previous configurations.

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   Note - You can also view previous configurations in the log files. See Access osc-setcoremem Log Files.

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   # ldm list-config
   factory-default
   V_B4_4_1_20150825155356
   CM_3S3T_1S1T_082820151531
   CM_30C2560G_18C1536G_082820151559
   CM_1S1T_6C512G_082820151618 [current]

   For details about SP configuration files see View the SP Configuration.

3. Revert to a previous configuration.

   # ldm set-config CM_30C2560G_18C1536G_082820151559

4. Halt all domains, then halt the primary domain.
5. Restart the system from the service processor.

   # #.
    
   -> cd /SP
   -> stop /SYS
   Are you sure you want to stop /SYS (y/n) ? y
   Stopping /SYS
    
   -> start /SYS
   Are you sure you want to start /SYS (y/n) ? y
   Starting /SYS

6. Boot all domains and zones.

Related Information

• osc-setcoremem Overview

• Supported Domain Configurations

• Plan CPU and Memory Allocations

• Display the Current Domain Configuration (osc-setcoremem)

• Display the Current Domain Configuration (ldm)

• Change CPU/Memory Allocations (Socket Granularity)

• Change CPU/Memory Allocations (Core Granularity)

• Park Cores and Memory