I wouldn't be certain that would work. Hangs on NFS tend not to respond to CTRL-C or kill. I'm working from memory here, but it would be interesting to try.
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From: Steve Anderson [steve.anderson at bipsolutions.com] Sent: Thursday, June 18, 2015 9:23 AM To: Novosielski, Ryan; Cédric BRINER; xymon at xymon.com Subject: RE: [Xymon] df hanging will cause xymon-client to hang.
If you don't care about the nfs mounted volumes, you may get away with replacing the df with something like
df -l or df -x nfs
Those /should/ (depending on implementation) just skip the testing of the nfs volumes.
timeout 5s df
is another option, which should kill the df if it takes more than 5 seconds.
Steve
-----Original Message----- From: Xymon [mailto:xymon-bounces at xymon.com] On Behalf Of Novosielski, Ryan Sent: 18 June 2015 14:16 To: Cédric BRINER; xymon at xymon.com Subject: Re: [Xymon] df hanging will cause xymon-client to hang.
You do eventually find out when the status turns purple.
This is a pretty hard one to deal with, from my experience. A hang on something NFS-related is pretty difficult to get out of. I've seen that mounting NFS with the "bg" option can improve this somewhat, but that might create other problems.
-- ____ *Note: UMDNJ is now Rutgers-Biomedical and Health Sciences* || \\UTGERS |---------------------*O*--------------------- ||_// Biomedical | Ryan Novosielski - Senior Technologist || \\ and Health | novosirj at rutgers.edu - 973/972.0922 (2x0922) || \\ Sciences | OIRT/High Perf & Res Comp - MSB C630, Newark `'
From: Xymon [xymon-bounces at xymon.com] On Behalf Of Cédric BRINER [Cedric.BRINER at UniGE.ch] Sent: Thursday, June 18, 2015 9:11 AM To: xymon at xymon.com Subject: [Xymon] df hanging will cause xymon-client to hang.
Hello,
I'm running a xymon-client on a Debian Jessie.
OS: Debian OS-Release: 8 (Jessie) xymon-client version : 4.3.17
The error happend due to a nfs ressource not responding. I suppose that as xymon launch "df" to get information and as the nfs was hanging, the xymon-client is no able to detect that the df hangs and it does not send any data to the server. Worst, the xymon-client is not verbose at all, it does not tell this test (df) takes too long to accomplish.
Many thanks for xymon.
Regards.
Cédric BRINER
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