PlogManager or PlogServer Suspension During Downgrade

Problem Symptom

When the storage system is downgraded from OceanStor 100D 8.0.2 to an earlier version, the downgrade of PlogManager or PlogServer is suspended.

Problem Diagnosis

1. Check whether the downgrade is suspended and whether the faulty nodes and components are displayed on the page.

   If the downgrade of PlogManager is suspended, go to 2.

   If the downgrade of PlogServer is suspended, go to 3.

   In other cases, this document is not applicable.

2. Log in to the faulty FSA node and run the sh /opt/fusionstorage/persistence_layer/mdc/script/dsware_mdc.sh command.

   A message is generated indicating that the dsware_mdc.sh or init_conf.sh file does not exist.

3. Log in to the faulty FSA node and run the sh /opt/fusionstorage/persistence_layer/osd/script/dsware_osd.sh command.

   A message is generated indicating that the dsware_osd.sh or init_conf.sh file does not exist.

Causes

In OceanStor 100D 8.0.2, the locations of dsware_mdc.sh and dsware_osd.sh are changed due to security requirements. As a result, the processes cannot be started.

Solution

PlogManager Upgrade Suspension

1. Click Retry and view the /var/log/dsware/update.log log file on the faulty FSA node. The log indicates that the MDC status is being checked.

   

2. Copy the dsware_mdc.sh script of the deployment version to the /opt/fusionstorage/persistence_layer/mdc/script/ directory.

3. Perform the preceding two steps on all FSA nodes where the fault occurs.

PlogServer Upgrade Suspension

1. Click Retry and view the /var/log/dsware/update.log log file on the faulty FSA node. The log indicates that the partition status is being checked.

   
   

   

2. Copy the dsware_osd.sh script of the deployment version to the /opt/fusionstorage/persistence_layer/osd/script/ directory.

3. Perform the preceding two steps on all FSA nodes where the fault occurs.

Check After Recovery

The downgrade is complete.

Suggestion and Summary

This fault occurs only when the storage system is downgraded from OceanStor 100D 8.0.2 to an earlier version. In this scenario, back up the /opt/fusionstorage/persistence_layer/mdc/script/dsware_mdc.sh and /opt/fusionstorage/persistence_layer/osd/script/dsware_osd.sh scripts of the FSA node in advance and place the scripts back to the corresponding directories at the corresponding time point during the downgrade.

Applicable Versions

OceanStor 100D 8.0.2