Working with a customer to enable Kdump following the [online documentation|https://docs.openshift.com/container-platform/4.13/support/troubleshooting/troubleshooting-operating-system-issues.html] we had to configure several things not mentioned in the documentation.
For example, was necessary to:
- Use a different target, NFS or SSH, because they were using multipath for boot disks.
- Exclude the multipath module.

All the releases.

From my point of view, would be sufficient to have a warning just reporting that in the case multipath is used the target must be an NFS or SSH target and that the multipath module should be excluded.