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NFS problems?
http://forums.linhes.org/viewtopic.php?f=21&t=24766
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Author:  JerryF [ Wed Jun 13, 2018 7:47 pm ]
Post subject:  NFS problems?

I'm running R8.5.1 seem to be having some trouble with NFS, which is disabled in the LinHES Settings. The mythtv_sm-notify.log is huge, with

Code:
Jun 13 21:29:46 mythtv sm-notify[25055]: Version 1.2.9 starting
Jun 13 21:29:46 mythtv sm-notify[25055]: Already notifying clients; Exiting!


constantly repeating every second. Likewise mythtv_kernel.log keeps repeating

Code:
Jun 13 21:31:07 mythtv kernel: [75540.825709] traps: rpc.statd[30811] general protection ip:7f6b4ca09400 sp:7fff86eca648 error:0
Jun 13 21:31:07 mythtv kernel: [75540.825716]  in libpthread-2.23.so[7f6b4c9f7000+18000]
Jun 13 21:31:08 mythtv kernel: [75541.974279] traps: rpc.statd[30888] general protection ip:7fd28cd9a400 sp:7ffe51e86748 error:0
Jun 13 21:31:08 mythtv kernel: [75541.974282]  in libpthread-2.23.so[7fd28cd88000+18000]


MythTV runs okay, but I'd like to stop the logs ballooning out. Any tips on how I'd go about troubleshooting this?

Author:  bgrant3406 [ Wed Jun 13, 2018 8:22 pm ]
Post subject:  Re: NFS problems?

I’ve had the same issue on my intel master backend.
I’ve not found any troubleshooting help, but haven’t gone into a major search to see what is going on since I simply shut down the processes.
Code:
[mythtv@mbe ~]$ su
[root@mbe mythtv]# sv stop nfs-common
[root@mbe mythtv]# sv stop nfsd

I’ve not seen any issues, but I only use one front end at a time, so if you are using multiple frontends for live tv or playback you might see some issues.
Let us know if you fix it, would love to not have to remember to shut the processes down to minimize the log size.
Regards.

Author:  brfransen [ Thu Jun 14, 2018 10:46 am ]
Post subject:  Re: NFS problems?

How often are the sm-notify messages appearing in the log?

Please post:
Code:
ps aux | grep nfs
ps aux | grep rpc


It looks like systemconfig.py doesn't remove the nfs-common and rpcbind services when disabling NFS. I am not 100% sure why but I think that is related to NFS integration with FE only boxes.

Try removing the services and see if that helps:
Code:
sudo remove_service.sh nfs-common
sudo remove_service.sh rpcbind

Author:  bgrant3406 [ Thu Jun 14, 2018 6:41 pm ]
Post subject:  Re: NFS problems?

Remove them from the master backend only, or all systems?

Thanks!

Author:  JerryF [ Thu Jun 14, 2018 6:50 pm ]
Post subject:  Re: NFS problems?

Thank you both.

The sm-notify messages are about 1 every second:

Code:
Jun 13 00:00:00 mythtv sm-notify[2119]: Version 1.2.9 starting
Jun 13 00:00:00 mythtv sm-notify[2119]: Already notifying clients; Exiting!
Jun 13 00:00:01 mythtv sm-notify[2252]: Version 1.2.9 starting
Jun 13 00:00:01 mythtv sm-notify[2252]: Already notifying clients; Exiting!
Jun 13 00:00:02 mythtv sm-notify[2385]: Version 1.2.9 starting
Jun 13 00:00:02 mythtv sm-notify[2385]: Already notifying clients; Exiting!
Jun 13 00:00:03 mythtv sm-notify[2501]: Version 1.2.9 starting
Jun 13 00:00:03 mythtv sm-notify[2501]: Already notifying clients; Exiting!
Jun 13 00:00:04 mythtv sm-notify[2609]: Version 1.2.9 starting
Jun 13 00:00:04 mythtv sm-notify[2609]: Already notifying clients; Exiting!
Jun 13 00:00:05 mythtv sm-notify[2724]: Version 1.2.9 starting
Jun 13 00:00:05 mythtv sm-notify[2724]: Already notifying clients; Exiting!
Jun 13 00:00:06 mythtv sm-notify[2832]: Version 1.2.9 starting
Jun 13 00:00:06 mythtv sm-notify[2832]: Already notifying clients; Exiting!
Jun 13 00:00:07 mythtv sm-notify[2940]: Version 1.2.9 starting
Jun 13 00:00:07 mythtv sm-notify[2940]: Already notifying clients; Exiting!
Jun 13 00:00:08 mythtv sm-notify[3054]: Version 1.2.9 starting
Jun 13 00:00:08 mythtv sm-notify[3054]: Already notifying clients; Exiting!
Jun 13 00:00:09 mythtv sm-notify[3162]: Version 1.2.9 starting
Jun 13 00:00:09 mythtv sm-notify[3162]: Already notifying clients; Exiting!
Jun 13 00:00:10 mythtv sm-notify[3271]: Version 1.2.9 starting
Jun 13 00:00:10 mythtv sm-notify[3271]: Already notifying clients; Exiting!


ps outputs after a fresh reboot:

Code:
[root@mythtv ~]# ps aux | grep nfs
root        80  0.0  0.0      0     0 ?        S<   20:30   0:00 [nfsiod]
root       916  0.0  0.0   4056  1136 ?        Ss   20:31   0:00 runsv nfs-common
root     23248  0.0  0.0  12576  2200 pts/1    S+   20:35   0:00 grep nfs


Code:
[root@mythtv ~]# ps aux | grep rpc
root        74  0.0  0.0      0     0 ?        S<   20:30   0:00 [rpciod]
root       927  0.0  0.0   4056   664 ?        Ss   20:31   0:00 runsv rpcbind
root       958  0.0  0.0  17004  2004 ?        S    20:31   0:00 /usr/bin/rpcbind -d
root     26561  0.0  0.0  12576  2188 pts/1    S+   20:36   0:00 grep rpc


Removing the services seems have done the trick - thanks again! This is on my combined FE/BE system. Don't know how I managed to get into this state, I was using NFS to share with a Kodi FE in another room at one point but haven't been for a while.

Author:  brfransen [ Thu Jun 14, 2018 8:31 pm ]
Post subject:  Re: NFS problems?

NFS is on by default. For some reason we don't stop these services as well when it is disabled. Not exactly sure why or if it was just an oversight. Odd part is I don't see the log behavior when testing on a VM. Do you have any FE only boxes that connect to the combined MBE?

Author:  bgrant3406 [ Fri Jun 15, 2018 4:42 am ]
Post subject:  Re: NFS problems?

If JerryF doesn’t and you need something tested, let me know I’ve got 3 stand-alone FEs connecting to a combo MBE/FE.

Author:  brfransen [ Fri Jun 15, 2018 6:58 am ]
Post subject:  Re: NFS problems?

bgrant3406 wrote:
If JerryF doesn’t and you need something tested, let me know I’ve got 3 stand-alone FEs connecting to a combo MBE/FE.
To be clear you have disabled NFS in settings and get the large log files too? Or is NFS enabled and you still get the large log files?

Author:  JerryF [ Fri Jun 15, 2018 5:18 pm ]
Post subject:  Re: NFS problems?

brfransen wrote:
Do you have any FE only boxes that connect to the combined MBE?

Nope, no MythTV FE only, just the combined MBE. I do have a Kodi frontend in another room running the MythTV addon though:
https://kodi.wiki/view/Add-on:MythTV_PVR_Client

Author:  brfransen [ Fri Jun 15, 2018 8:37 pm ]
Post subject:  Re: NFS problems?

LinHES FE only would be the only ones that might be affected without those 2 services.

Author:  bgrant3406 [ Sat Jun 16, 2018 7:15 am ]
Post subject:  Re: NFS problems?

brfransen wrote:
bgrant3406 wrote:
If JerryF doesn’t and you need something tested, let me know I’ve got 3 stand-alone FEs connecting to a combo MBE/FE.
To be clear you have disabled NFS in settings and get the large log files too? Or is NFS enabled and you still get the large log files?


So I went back and double checked, NFS was enabled in LinHES settings on the MBE and was off on the 3 SBE/FE systems.

Turned it off on the MBE, rebooted the system and was getting the general protection faults until I stopped nfs-common.

What else would you like me to check?

Author:  brfransen [ Sat Jun 16, 2018 8:03 am ]
Post subject:  Re: NFS problems?

The GPF was from rpc? Did you just stop nfs-common or rpcbind as well?

Author:  bgrant3406 [ Sat Jun 16, 2018 10:21 am ]
Post subject:  Re: NFS problems?

Here is what I was seeing:
Code:
[  140.590684] traps: rpc.statd[11198] general protection ip:7fd394a26400 sp:7ffc7fe4b468 error:0
[  140.590687]  in libpthread-2.23.so[7fd394a14000+18000]
[  141.675323] traps: rpc.statd[11273] general protection ip:7f1b8d5b2400 sp:7ffd9ca0fc78 error:0
[  141.675326]  in libpthread-2.23.so[7f1b8d5a0000+18000]


All I stopped was nfs-common (nfsd didn’t start once I turned that off in settings), I didn’t touch rpcbind.

Let me know if you need me to check anything else.

And as always, thanks for all you do!

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