Chapter 7. Updating Red Hat Gluster Storage from 3.4.x to 3.4.y
- This is an update between minor releases of the same major product version. If you want to upgrade between major product versions, see Chapter 8, Upgrading to Red Hat Gluster Storage 3.4.
- Asynchronous errata update releases of Red Hat Gluster Storage include all fixes that were released asynchronously since the last release as a cumulative update.
- When a Red Hat Gluster Storage server node that hosts a very large number of bricks or snapshots is updated, cluster management commands may become unresponsive as glusterd attempts to start all brick processes concurrently for all bricks and snapshots. If you have more than 250 bricks or snapshots being hosted by a single node, Red Hat recommends deactivating snapshots until the update is complete.
- After performing inservice upgrade of NFS-Ganesha, the new configuration file is saved as "
/etc/ganeshafolder. The old configuration file is not overwritten during the inservice upgrade process. However, post upgradation, you have to manually copy any new configuration changes from "
ganesha.conf.rpmnew" to the existing
7.1. Before you update
- Back up to a location that is not on the operating system partition.
- Ensure that you have sufficient space available for a complete backup.
- Copy the
.glusterfsdirectory before copying any data files.
- Ensure that the following configuration directories and files are backed up.
If you use NFS-Ganesha, also ensure that the following files from all nodes are backed up:
- Ensure that all extended attributes, ACLs, owners, groups, and symbolic and hard links are backed up.
- Ensure that no new files are created on Red Hat Gluster Storage file systems during the backup or update process.
- Check that the backup restores correctly before you continue with the update:
- Create a new thin provisioned logical volume. For more information, see https://access.redhat.com/site/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Logical_Volume_Manager_Administration/thinprovisioned_volumes.html
- Restore the backed up content to the newly created thin provisioned logical volume.
Red Hat Gluster Storage Web Administration Update
- Visit the section Red Hat Gluster Storage Web Administration 3.4.x to 3.4.y and stop all Web Administration services on the Red Hat Gluster Storage servers outlined in step 1 under the heading On Red Hat Gluster Storage Servers (Part 1).
- Return to this section 7.2. Updating Red Hat Gluster Storage in the Offline Mode and execute the steps outlined under the heading Updating Red Hat Gluster Storage 3.4 in the offline mode.
- Navigate back to the Red Hat Gluster Storage Web Administration 3.4.x to 3.4.y section and perform the steps identified under On Web Administration Server and On Red Hat Gluster Storage Servers (Part II) to complete the Red Hat Gluster Storage and Web Administration update process.