Ubuntu
rdma-core package

  1. Bug #1794825
  2. Comment #3

Comment 3 for bug 1794825

Revision history for this message
Christian Ehrhardt  (paelzer) wrote : Re: package ibacm 17.1-1 failed to install/upgrade: instalado ibacm paquete post-installation guión el subproceso devolvió un error con estado de salida 1

The service actually defines:
# Ensure required kernel modules are loaded before starting
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$ dpkg -S /lib/systemd/system/rdma-load-modules@.service
rdma-core: /lib/systemd/system/rdma-load-modules@.service

There is a lot of systemd config chatter around, but essentially it does
ExecStart=/lib/systemd/systemd-modules-load /etc/rdma/modules/%I.conf
Which in this case will be /etc/rdma/modules/rdma.conf

That config does not contain "ib_umad" module.

The solutions that come to mind immediately would either be:
1. add ib_umad to /etc/rdma/modules/rdma.conf to be auto-loaded
2. consider this optional and keep the service off unless a admin made ib_umad load
   ConditionPathExists=/sys/class/infiniband_mad/abi_version

Given that there might be plenty of cases for #1 to fail (containers, module not available, module fails to load) I'd think that #2 is required and the decision to add #1 is not mine to make (no experience what it actually does).

I see that /etc/rdma/modules/rdma.conf has other commented out modules, so even if we don't want it auto-loaded we might add it disabled by default.