Re: [Nfsen-discuss] nfsen error: could not lock RRD

[Peter H. <ha...@sw...>]

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Hi Chelo,
This looks likes an RRD internal error. Make sure your Perl RRD modules
is of the same version than the rrd library and rrdtool. Another point
is: check for the right permission, that your netflow user can read/write
the RRD DBs.

	- Peter

- -------- Original Message  --------
From: Chelo Malagon <che...@re...>
To: nfs...@li...
Subject: [Nfsen-discuss] nfsen error: could not lock RRD
Date: Tue May 09 2006 12:07:08 GMT+0200 (CEST)

> Hello all,
> Im facing  a problem with RRD tools. I have already installed the 
> nfsen/nfdum in the production machine. The profiles dir is a NFS 
> mounted filesystem in a filer in order to have enough space to store 
> all the flows from our backbone.
> I get this error when Im running nfsen
> 
> May  4 13:38:23 fraguelrock nfsen[17592]: ERROR Update RRD time: '200605041320', db: 'flows', profile: 'live': ERROR while updating RRD DB flows.rrd: could
>  not lock RRD
> May  4 13:38:23 fraguelrock nfsen[17592]: ERROR Update RRD time: '200605041320', db: 'flows_tcp', profile: 'live': ERROR while updating RRD DB flows_tcp.rr
> d: could not lock RRD
> May  4 13:38:23 fraguelrock nfsen[17592]: ERROR Update RRD time: '200605041320', db: 'flows_udp', profile: 'live': ERROR while updating RRD DB flows_udp.rr
> d: could not lock RRD
> May  4 13:38:23 fraguelrock nfsen[17592]: ERROR Update RRD time: '200605041320', db: 'flows_icmp', profile: 'live': ERROR while updating RRD DB flows_icmp.
> rrd: could not lock RRD
> May  4 13:38:23 fraguelrock nfsen[17592]: ERROR Update RRD time: '200605041320', db: 'flows_other', profile: 'live': ERROR while updating RRD DB flows_othe
> r.rrd: could not lock RRD
> May  4 13:38:23 fraguelrock nfsen[17592]: ERROR Update RRD time: '200605041320', db: 'packets', profile: 'live': ERROR while updating RRD DB packets.rrd: c
> ould not lock RRD
> May  4 13:38:23 fraguelrock nfsen[17592]: ERROR Update RRD time: '200605041320', db: 'packets_tcp', profile: 'live': ERROR while updating RRD DB packets_tc
> p.rrd: could not lock RRD
> May  4 13:38:23 fraguelrock nfsen[17592]: ERROR Update RRD time: '200605041320', db: 'packets_udp', profile: 'live': ERROR while updating RRD DB packets_ud
> p.rrd: could not lock RRD
> 
> The result is no graphics are shown in the nfsen web interface 
> although the nfcapd works fine.
> 
> I have been looking for this error in goolgle and I found some 
> interesting posting in the rrd-user and flowscan mailing list:
> 
> http://net.doit.wisc.edu/~plonka/list/flowscan/archive/0265.html
> http://net.doit.wisc.edu/~plonka/list/flowscan/archive/0266.html
> http://lists.ee.ethz.ch/rrd-users/msg02265.html
> 
> Im going to check the ile locking support in my NFS server, but in 
> the meanwhile, have you any experience on this topic or have you ever 
> deal with this error? If so, how did you solve it?
> 
> Cheers,
> Chelo
> 
> 
> 
> 
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- --
_______ SWITCH - The Swiss Education and Research Network ______
Peter Haag,  Security Engineer,  Member of SWITCH CERT
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SWITCH,  Limmatquai 138,  CH-8001 Zurich,  Switzerland
E-mail: pet...@sw... Web: http://www.switch.ch/security
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