On Mon, 22 Sep 2014 21:55:49 -0400 "J. Bruce Fields" <bfields@xxxxxxxxxxxx> wrote: > On Mon, Sep 22, 2014 at 08:26:55PM -0400, Simo Sorce wrote: > > On Mon, 22 Sep 2014 19:58:05 -0400 > > Steve Dickson <SteveD@xxxxxxxxxx> wrote: > > > > > > > > > > > On 09/22/2014 06:34 PM, J. Bruce Fields wrote: > > > > On Mon, Sep 22, 2014 at 05:14:05PM -0400, Steve Dickson wrote: > > > >> > > > >> > > > >> On 09/22/2014 04:44 PM, J. Bruce Fields wrote: > > > >>> On Mon, Sep 22, 2014 at 03:43:09PM -0400, Steve Dickson wrote: > > > >>>> > > > >>>> > > > >>>> On 09/22/2014 03:26 PM, Simo Sorce wrote: > > > >>>>> On Mon, 22 Sep 2014 15:20:07 -0400 > > > >>>>> Steve Dickson <steved@xxxxxxxxxx> wrote: > > > >>>>> > > > >>>>>> Added the gssproxy.service to both the Wants= and > > > >>>>>> Atfers= lines, before the rpc-svcgssd.service. There > > > >>>>>> are ConditionPathExists= lines in the rpc-svcgssd.service > > > >>>>>> unit which will stop the rpc.svcgssd daemon from > > > >>>>>> starting when the gssproxy daemon is already running. > > > >>>>>> > > > >>>>>> Signed-off-by: Steve Dickson <steved@xxxxxxxxxx> > > > >>>>>> --- > > > >>>>>> systemd/nfs-server.service | 5 +++-- > > > >>>>>> 1 file changed, 3 insertions(+), 2 deletions(-) > > > >>>>>> > > > >>>>>> diff --git a/systemd/nfs-server.service > > > >>>>>> b/systemd/nfs-server.service index 2fa7387..c740fa2 100644 > > > >>>>>> --- a/systemd/nfs-server.service > > > >>>>>> +++ b/systemd/nfs-server.service > > > >>>>>> @@ -2,12 +2,13 @@ > > > >>>>>> Description=NFS server and services > > > >>>>>> Requires= network.target proc-fs-nfsd.mount rpcbind.target > > > >>>>>> Requires= nfs-mountd.service > > > >>>>>> -Wants=rpc-statd.service nfs-idmapd.service rpc-gssd.service > > > >>>>>> rpc-svcgssd.service +Wants=rpc-statd.service > > > >>>>>> nfs-idmapd.service +Wants=rpc-gssd.service > > > >>>>>> Wants=rpc-statd-notify.service > > > >>>>>> > > > >>>>>> After= network.target proc-fs-nfsd.mount rpcbind.target > > > >>>>>> nfs-mountd.service After= nfs-idmapd.service rpc-statd.service > > > >>>>>> -After= rpc-gssd.service rpc-svcgssd.service > > > >>>>>> +After= rpc-gssd.service gssproxy.service rpc-svcgssd.service > > > >>>>>> Before= rpc-statd-notify.service > > > >>>>>> > > > >>>>>> Wants=nfs-config.service > > > >>>>> > > > >>>>> I think you really need to insure that the modules are loaded > > > >>>>> before any of the server services are started, perhaps adding a > > > >>>>> unit file that exec's modprobe and has "Before: > > > >>>>> gssproxy.service rpc-svcgssd.service" in it ? > > > >>>> I really don't think its needed... From my testing it appears > > > >>>> gssproxy is always being started and rpc.svcgssd is not... > > > >>> > > > >>> Huh. Well rpc-svcgssd.service has var-lib-nfs-rpc_pipefs.mount > > > >>> as both "Requires=" and "After=", so rpc-svcgssd.service will > > > >>> never run without first running var-lib-nfs-rpc_pipefs.mount, > > > >>> which will load sunrpc. But I don't see where auth_rpcgss is > > > >>> getting loaded. And I don't see what ensures anything happening > > > >>> before gssproxy runs. > > > >> It happens during the mount on the client and when the server > > > >> is started. > > > >> > > > >>> > > > >>> We want to make sure your testing's not just getting lucky on the > > > >>> startup order. > > > >> The reason it working is because rpc.gssd is being started on the > > > >> server these days for callbacks and the After= line in > > > >> rpc-svcgssd.service is being executed before the > > > >> ConditionPathExists which cause rpc.svcgssd not to start. > > > > > > > > nfs-utils$ grep After systemd/rpc-svcgssd.service > > > > After=var-lib-nfs-rpc_pipefs.mount > > > > After=gssproxy.service > > > > After=nfs-config.service > > > > > > > > There doesn't seem to be an After= line referring to rpc.gssd. > > > No, why should there be? There is After= line referring to rpc.gssd > > > in nfs-server.service > > > > > > grep After systemd/nfs-server.service > > > After= network.target proc-fs-nfsd.mount rpcbind.target > > > nfs-mountd.service After= nfs-idmapd.service rpc-statd.service > > > After= rpc-gssd.service rpc-svcgssd.service > > > After=nfs-config.service > > > > > > So when the server starts,rpc.gssd will start and rpc.svcgssd will > > > start if gssproxy is not enable and there is a key tab. > > > > They can start in parallel, there is nothing in that line that makes > > one start before the other. > > > > If you are relying on this you are relying on luck. > > > > > >> So when gssproxy.service does it's "Before=nfs-secure.service > > > >> nfs-secure-server.service" line everything is loaded before > > > >> gssproxy start... > > > > > > > > That line only makes gss-proxy start before those other things. > > > Right, which will load the sunrpc modules. > > > > No, starting before those service in itself achieves nothing.\ > > I think what may cause the module to load maybe the fact > > gssproxy.service includes: > > Requires=proc-fs-nfsd.mount > > I'd expect that to only load the nfsd module. > > Hm, I think nfsd actually has a dependency on auth_rpcgss. I wonder if > that's correct. Maybe that's what's doing it. > > > But to be honest this was a hack to deal with broken nfs service files, > > gss-proxy should not require nfsd, the dependency should be the other > > way around, as gss-proxy can run on machines where there is no nfs > > service whatsoever, as it stand this is a bug in gssproxy.service and > > I'd like to fix it. > > So, something like this? (Untested, no idea if I'm doing this right.) > > --b. > > diff --git a/systemd/auth-rpcgss-module.service b/systemd/auth-rpcgss-module.service > new file mode 100644 > index 000000000000..252545b458fd > --- /dev/null > +++ b/systemd/auth-rpcgss-module.service > @@ -0,0 +1,15 @@ > +# We want to start gss-proxy on kernels that support it and rpc.svcgssd > +# on those that don't. Those services check for support by checking > +# for existence of the path /proc/net/rpc/use-gss-proxy. Before they > +# can perform that check, they need this module loaded. (Unless > +# rpcsec_gss is built directly into the kernel, in which case this unit > +# will fail. But that's OK.) > +[Unit] > +Description=Kernel Module supporting RPCSEC_GSS > +Before=gssproxy.service rpc-svcgssd.service > + > +[Service] > +ExecStart=/sbin/modprobe -q auth_rpcgss I think you need Type=oneshot else systemd won't wait for the modprobe to complete before running the other services. > + > +[Install] > +WantedBy=gssproxy.service rpc-svcgssd.service I don't think you want an install section. That means the service has to be explicitly enabled, which is a pain. I think nfs-server.service should Want= this. I also think ConditionPathExists=/etc/krb5.keytab would be appropriate. Thanks, NeilBrown
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