Description of problem:
In the procedure to replace a secondary host with a different FQDN [1], I'm missing to update the "backup-volfile-servers" mount option with the new host.

To modify the storage domains mount options in RHV, they need to be in maintenance mode first, so that will imply a downtime. For the hosted engine storage domain there's no direct way to modify it, so I suppose a SQL update will be needed. I'm not sure if we just simply should update the database for all storage domains and reboot one host at a time after that. That way, we can avoid the down time.

If opting for the SQL update, I'd first check the storage server connections IDs to be updated:

# /usr/share/ovirt-engine/dbscripts/engine-psql.sh -c "SELECT id, connection, mount_options FROM storage_server_connections WHERE storage_type = 7;"

Then, for each one of the UUIDs that need an update:

# /usr/share/ovirt-engine/dbscripts/engine-psql.sh -c "UPDATE storage_server_connections SET mount_options = 'backup-volfile-servers=<host2_IP>:<host3_IP>' WHERE id = '<UUID>' AND storage_type = 7;"


The hosted engine HA configuration needs to be updated too:

- Update hosted engine storage mount options in the shared storage by running this in one host:

# hosted-engine --set-shared-config mnt_options "backup-volfile-servers=<host2_IP>:<host3_IP>" --type=he_shared

- Update hosted engine storage mount options in each one of the host by running:

# hosted-engine --set-shared-config mnt_options "backup-volfile-servers=<host2_IP>:<host3_IP>" --type=he_local



[1] https://access.redhat.com/documentation/en-us/red_hat_hyperconverged_infrastructure_for_virtualization/1.7/html/maintaining_red_hat_hyperconverged_infrastructure_for_virtualization/replacing-hosts#replacing_hc_host_diff_fqdn

Version-Release number of selected component (if applicable):
Latest RHHI-V 1.7 documentation

How reproducible:
Always

Steps to Reproduce:
1.  Follow procedure "12.2.1. Replacing a hyperconverged host to use a different FQDN"

Actual results:
The "backup-volfile-servers" mount option of the storage domains is not updated, and still referring to the old server.

Expected results:
Database and hosted engine config updated.

Additional info: