[Xymon] df hanging will cause xymon-client to hang.

[Jeremy Ruffer]

That's what I do. In xymonclient-linux.sh I changed it to df -Plh and df -Pil for the inode test.

I find the h option makes the output easier to understand.

Jeremy

> On 18 Jun 2015, at 14:23, Steve Anderson <steve.anderson at bipsolutions.com> wrote:
> 
> 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
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> ________________________________________
> 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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