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Sheng Yang 2018-09-14 15:58:17 -07:00 committed by GitHub
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@ -230,17 +230,20 @@ approximately the same for all workloads.
## Upgrade Engine Images
Note: this is entirely optional. Volumes using old engine images will continue
to function, but won't take advantage of new features, performance enhancements
and bug fixes.
### Offline upgrade
If live upgrade is not available (e.g. from v0.1/v0.2 to v0.3):
1. Follow [the detach procedure for relevant workloads](upgrade.md#detach-volumes).
2. Select all the volumes using batch selection. Click batch operation button
`Upgrade Engine`, choose the only engine image available in the list. It's
`Upgrade Engine`, choose the engine image available in the list. It's
the default engine shipped with the manager for this release.
3. Resume all workloads by reversing the [detach volumes procedure](upgrade.md#detach-volumes).
Any volume not part of a Kubernetes workload must be attached from Longhorn UI.
### Live upgrade (expermential feature)
Select all the volumes using batch selection. Click batch operation button
`Upgrade Engine`, choose the engine image available in the list. It's
the default engine shipped with the manager for this release.
## Note
Upgrade is always tricky. Keeping recent backups for volumes is critical. If