Not sure where it would be best to place it. It used to be in the "Storage Administration Guide" in RHEL 7 and 6. Probably "Managing storage devices" would be a good match (https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/managing_storage_devices/index)
Section Number and Name:
The corresponding content for RHEL 7 is:
Describe the issue:
A very commonly needed procedure which can have a significant impact if done wrong (depending on the system setup it can result to data loss, cluster evictions, hanging systems etc) is missing.
Suggestions for improvement:
Document the procedure, as was done in previous RHEL versions
For the time being there is also a KCS documenting the procedure (but also using the "storage administration guide" as a reference for older versions), which kind of fills the gap: https://access.redhat.com/solutions/3941
However, it is impressive how many times such issues pop up in support cases. This is a procedure that would be good to be described in the product documentation.