Upgrade procedure to Gluster 5, from Gluster 4.1.x, 4.0.x, 3.12.x and 3.10.x

NOTE: Upgrade procedure remains the same as with 4.1 release

Refer, to the Upgrading to 4.1 guide and follow documented instructions, replacing 5 when you encounter 4.1 in the guide as the version reference.

Major issues

  1. The following options are removed from the code base and require to be unset before an upgrade from releases older than release 4.1.0,
  2. features.lock-heal
  3. features.grace-timeout

To check if these options are set use,

# gluster volume info

and ensure that the above options are not part of the Options Reconfigured: section in the output of all volumes in the cluster.

If these are set, then unset them using the following commands,

# gluster volume reset <volname> <option>

NOTE: Failure to do the above may result in failure during online upgrades, and the reset of these options to their defaults needs to be done prior to upgrading the cluster.