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The supported upgrade path is a matrix by which it is easy to see which OneFS releases can be upgraded to from a given source release. This matrix applies to both simultaneous and rolling upgrades - in other words, an upgrade is either possible or not, regardless of the upgrade method chosen. Error! Reference source not found. is an example of a high-level matrix of the supported upgrade path from 8.0.0.
Starting from 8.0.0, the supported upgrade path follows the rule below:
Consider a source release version in the format of w.x.y.z. The rule is that a simultaneous or rolling upgrade is supported to any version up to and including x+2, where the w digit either remains the same or increases by one step only.
Note: starting from OneFS 8.2.0, the release version is in a 3-digit format such as w.x.y.
This document will only focus on the upgrade path starting from OneFS 8.0.0. For a detailed supported upgrade path for all OneFS releases, see OneFS Upgrade Paths.
There are some special upgrade support matrix and path defined. For a complete list of OneFS upgrade paths, see OneFS Upgrade Paths.