[collectd] collectd stopped generating rrdfiles for exec plugins

[Jie Zhang]

I am using the exec plugin to execute a script that collects the read/write
ios of 72 block devices. The result of each block device will to be saved
into a rrdfile.

I have a type "block_device" defined in the types.db file:
*block_device            reads:COUNTER:0:4294967295,
writes:COUNTER:0:4294967295*


My script output the following:

*PUTVAL
UML-F632/blockDevice-AAS7200_Cell_0_0x50050C24E900BB00_bay0_4:0:7:0/block_device-read_write_ios
interval=60 1263485173:8:4
PUTVAL
UML-F632/blockDevice-AAS7200_Cell_0_0x50050C24E900BB00_bay1_4:0:4:0/block_device-read_write_ios
interval=60 1263485173:5:4
......*

But no rrd files are created. I set the log level in collectd.conf to debug
, the following errors are reported in the log file for exec plugin:

[2010-01-14 11:40:16] exec plugin: exec failed: No such file or directory
[2010-01-14 11:41:16] exec plugin: exec failed: No such file or directory
[2010-01-14 11:42:16] exec plugin: exec failed: No such file or directory
[2010-01-14 11:43:16] exec plugin: exec failed: No such file or directory
[2010-01-14 11:44:16] exec plugin: exec failed: No such file or directory
[2010-01-14 11:45:16] exec plugin: exec failed: No such file or directory
[2010-01-14 11:46:16] exec plugin: exec failed: No such file or directory
[2010-01-14 11:47:16] exec plugin: exec failed: No such file or directory
[2010-01-14 11:48:16] exec plugin: exec failed: No such file or directory
[2010-01-14 11:49:16] exec plugin: exec failed: No such file or directory
[2010-01-14 11:49:16] exec plugin: Program `/home/seasim/blockDevice.pl -i
60' has closed STDERR.



I don't know which file it couldn't find, could anyone help with debugging
this problem?
Thanks a lot!

Jie
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