[rrd-users] Errors on create/update/lastupdate like Ticket #303

Christian Hitz christian.hitz at aizo.com
Fri Jan 6 16:46:05 CET 2012

Hi Achim,

ekgnkb3d wrote
> Hello all,
> I've used RRDTOOL at version 1.0 since years now - but since upgrading to
> a new hardware + version 1.4 I now have annoying problems.
> [...]
> I can't understand, out of the tickets text, what can be done to prevent
> this errors and making the created file accessible. How to create and use
> .rrd files with version 1.4 on jffs2 file system?

We just ran into the same problem you described. The problem is that rrdtool
uses MAP_SHARED while opening its files. This is not supported on a JFFS2
partition [1].

You have to compile rrdtool with the --disable-mmap option set. With this
rrdtool works also on JFFS2.


[1] http://www.infradead.org/pipermail/linux-mtd/2004-July/010082.html

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