ibacm: Required-Start on openibd

ibacm: Required-Start on openibd

[Benjamin Drung]

Hi,

The init script for ibacm adds a Required-Start on openibd, but rdma-
core does not ship an openibd service. redhat/rdma.service and
redhat/rdma.kernel-init seem to do the same job as openibd, but they
are only used in rpm packages.

Can rdma-core ship a service that loads all the relevant kernel
modules? Then ibacm can depend on that service. I am not sure if
rdma.service is the best name for such an service.

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Re: ibacm: Required-Start on openibd

[Jason Gunthorpe]

On Mon, Apr 24, 2017 at 05:09:18PM +0200, Benjamin Drung wrote:
> Hi,
> 
> The init script for ibacm adds a Required-Start on openibd, but rdma-
> core does not ship an openibd service. redhat/rdma.service and
> redhat/rdma.kernel-init seem to do the same job as openibd, but they
> are only used in rpm packages.
> 
> Can rdma-core ship a service that loads all the relevant kernel
> modules? Then ibacm can depend on that service. I am not sure if
> rdma.service is the best name for such an service.

Debian should use the RH for this scripts, I think.. Is there a
problem with them?

Why does ibacm need to depend on rdma.service anyhow? Ideally we'd fix
that..

Jason
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Re: ibacm: Required-Start on openibd

[Doug Ledford]

On Mon, 2017-04-24 at 09:59 -0600, Jason Gunthorpe wrote:
> On Mon, Apr 24, 2017 at 05:09:18PM +0200, Benjamin Drung wrote:
> > 
> > Hi,
> > 
> > The init script for ibacm adds a Required-Start on openibd, but
> > rdma-
> > core does not ship an openibd service. redhat/rdma.service and
> > redhat/rdma.kernel-init seem to do the same job as openibd, but
> > they
> > are only used in rpm packages.
> > 
> > Can rdma-core ship a service that loads all the relevant kernel
> > modules? Then ibacm can depend on that service. I am not sure if
> > rdma.service is the best name for such an service.
> 
> Debian should use the RH for this scripts, I think.. Is there a
> problem with them?
> 
> Why does ibacm need to depend on rdma.service anyhow? Ideally we'd
> fix
> that..

Other than the fact that it doesn't make much sense without RDMA
interfaces, it doesn't have to depend on the rdma.service.  However, in
the early days, that wasn't true, it had problems if it was started
before all interfaces were up.  Back in the day, I put that dependency
in there to help alleviate that issue.  I haven't tested it lately to
see if it's gone or not, but one would hope so.  However, at least in
the systemd world, the rdma service is autostarted, so ibacm probably
ought to be autostarted too, regardless of whether it depends on the
rdma service or not.

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Re: ibacm: Required-Start on openibd

[Jason Gunthorpe]

On Wed, Apr 26, 2017 at 06:56:07PM -0400, Doug Ledford wrote:

> see if it's gone or not, but one would hope so. However, at least in
> the systemd world, the rdma service is autostarted, so ibacm probably
> ought to be autostarted too, regardless of whether it depends on the
> rdma service or not.

systemd socket activation on its unix domain socket is the way to go, imho.

Jason
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