PowerScale OneFS Upgrade Planning and Process Guide

Resolve outstanding events and errors

Before you begin your upgrade, resolve any outstanding critical events, errors, and failures, as these issues can disrupt the OneFS upgrade process.

Run the following command to view all events on the cluster:
```
isi event groups list --sort=severity
```
- If the command returns any critical errors, check the log files in the following directories for more information:
  - /var/log
  - /var/log/messages
  - /var/crash
- NOTE:If any log files contain messages about a dynamic sector recovery (DSR) failure or a Data Integrity (IDI) failure, contact PowerScale before you upgrade.
Cancel non-critical events before upgrading to prevent a recurrence of notifications that you know to be harmless.
If you have critical events that you are unable to resolve, contact support before upgrading.