[rrd-users] Bug in dump/restore

[Tobias Oetiker]

Hi Fabian,

Today Fabian Zimmermann wrote:

> Hi Benny Bauman,
>
>  > Hi, when I enhanced the rrd_dump method a bit I did some changes to
>  > rrd_dump to reduce the output of spaces. IDK if this has any effect, but
>  > the versions affected by this aren't before 1.3.999*. Please recheck
>  > with a version there, if you notice any differences and report back
> please.
>
> rrdtool dump org.rrd > test.xml
> rrdtool restore test.xml dump.rrd
> ERROR: line 45: expected a value but found an <value> element
>
> on RRDtool 1.3.999 (Debian/experimental)
>
>  > In addition it would be nice if you could have a look if this affects
>  > import (restore) or export (dump) of an RRD file, but given your initial
>  > export had the correct values still present I suspect the error to be
>  > within rrd_restore. Please try to verify this by querying the stored
>  > values using a rrd_fetch or simular means.
>  >
>
> rrdtool fetch org.rrd AVERAGE
>
> 1256026500: 2,1552833333e+02 3,3772833333e+02
> 1256026800: 2,1552833333e+02 3,3772833333e+02
> 1256027100: 4,1999333333e+02 6,8830666667e+02
>
> rrdtool fetch dump.rrd AVERAGE
>
> 1256026500: 2,0000000000e+00 3,0000000000e+00
> 1256026800: 2,0000000000e+00 3,0000000000e+00
> 1256027100: 4,0000000000e+00 6,0000000000e+00
>
> both done with 1.3.1
>
>  > Another detail which might be of interest: Which locales are you using
>  > when running rrdtool?
>
> export LC_ALL=C - SOLVED the problem!
>
>  > P.S.: A short "summary" like "precision lost with reimport" would have
>  > been nice ;-)
>
> Sorry, next time ;)
>
> Thanks for pointing me to the locale-workaround. If you need further
> information, just ask.
>

I have now added code to rrd_restore (trunk as well as 1.3 svn) to force LC_NUMERIC to C
regardles of your local setup.

thanks for finding this and being so brave as to work in a LANG
de_DE environment or some such ... things must be breaking quite
in most creative ways ... I guess ...

cheers
tobi


> Fabian
>
> _______________________________________________
> rrd-users mailing list
> rrd-users at lists.oetiker.ch
> https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users
>
>

-- 
Tobi Oetiker, OETIKER+PARTNER AG, Aarweg 15 CH-4600 Olten, Switzerland
http://it.oetiker.ch tobi at oetiker.ch ++41 62 775 9902 / sb: -9900