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.
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. Another detail which might be of interest: Which locales are you using when running rrdtool? Regards, BenBE. P.S.: A short "summary" like "precision lost with reimport" would have been nice ;-) Am 20.10.2009 12:11, schrieb Fabian Zimmermann: > Hello, > > is there a known bug in dump/restore of rrdtool? I tried to find some > more information, but google didn't return anything useful. > > If I do a: > > rrdtool dump test.rrd > dump.xml > > i get: > > <!-- 2009-10-08 01:50:00 CEST / 1254959400 --> <row><v> 1.4980000000e+01 > </v><v> 9.5716666667e+00 </v></row> > <!-- 2009-10-08 01:55:00 CEST / 1254959700 --> <row><v> 3.8149000000e+02 > </v><v> 7.0007666667e+02 </v></row> > <!-- 2009-10-08 02:00:00 CEST / 1254960000 --> <row><v> 2.8804000000e+02 > </v><v> 5.3001333333e+02 </v></row> > <!-- 2009-10-08 02:05:00 CEST / 1254960300 --> <row><v> 2.8804000000e+02 > </v><v> 5.3001333333e+02 </v></row> > > followed by: > > rrdtool restore dump.xml restored.rrd > rrdtool dump restored.rrd > > and I got: > > <!-- 2009-10-08 01:50:00 CEST / 1254959400 --> <row><v> 1.0000000000e+00 > </v><v> 9.0000000000e+00 </v></row> > <!-- 2009-10-08 01:55:00 CEST / 1254959700 --> <row><v> 3.0000000000e+00 > </v><v> 7.0000000000e+00 </v></row> > <!-- 2009-10-08 02:00:00 CEST / 1254960000 --> <row><v> 2.0000000000e+00 > </v><v> 5.0000000000e+00 </v></row> > <!-- 2009-10-08 02:05:00 CEST / 1254960300 --> <row><v> 2.0000000000e+00 > </v><v> 5.0000000000e+00 </v></row> > > I tested this with 1.3.1 (Lenny) and 1.3.8 (Squeeze). I also tried > "--no-header" and/or "--range-check", but still the same. > > Any ideas? > > Thanks a lot, > Fabian > > _______________________________________________ > rrd-users mailing list > rrd-users@lists.oetiker.ch > https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users > >
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