Hi all

I just hit an interesting graphing issue, which I resolved, and I believe the list could benefit from.

I have a custom test, http://www.xymonton.org/monitors:bb-zfs running on two hosts. Sticking to tradition, let's call them foo and bar. The test status appears fine for both hosts, with graphs for foo, but no graph for bar. The rrd file is correctly populated for both, and the graphs appeared correctly on the trends column.

I eventually traced it back to the graphs.cfg definition. I had FNPATTERN zfs,(.*).rrd However, on bar, I also had a zpool called testzfs, with file systems, among them, testzfs/test1 This meant that disk (file system) monitoring was creating rrd files disk,test*zfs,*test1.rrd The defined FNPATTERN would match this file too, and was trying to graph the zfs rrd files with some of the disk rrd files. And wasn't too happy about it.

To fix it, I changed the FNPATTERN definition to FNPATTERN *^*zfs,(.*).rrd And all was good.

Anybody using the zfs test might want to make this change. I have updated Xymonton already, but I am guessing the same "bug" might exist in other tests too.

Regards Vernon

-- "Accept the challenges so that you can feel the exhilaration of victory"

• General George Patton