package: munin-plugins-extra severity: minor x-debbugs-cc: Steve Schnepp <[email protected]> version: 2.0.24-1 # also in 2.1.9
Hi,
on jenkins.debian.net I'd like to use the iostat_ios plugin but it's
autoconfiguration "helpfully" decides to only monitor /dev/dmX devices on that
host, while the interesting ones are /dev/vda and /dev/vdb.
root@jenkins:~# cat /proc/diskstats
254 0 vda 14440293 403905 1050453130 201710680 18536760 288707751
2458658344 1392859460 5 65066816 1594664896
254 1 vda1 13872730 147690 1043862906 197725352 18218312 283660992
2415226528 1349161840 5 64389092 1546875300
254 2 vda2 567038 256215 6586024 3978816 318448 5046759 43431816
43697620 0 3407168 47759440
254 16 vdb 1923157 20106049 176269082 23264064 5341016 388173977
3148375760 477443868 0 66456272 501315348
7 0 loop0 0 0 0 0 0 0 0 0 0 0 0
7 1 loop1 0 0 0 0 0 0 0 0 0 0 0
7 2 loop2 0 0 0 0 0 0 0 0 0 0 0
7 3 loop3 0 0 0 0 0 0 0 0 0 0 0
7 4 loop4 0 0 0 0 0 0 0 0 0 0 0
7 5 loop5 0 0 0 0 0 0 0 0 0 0 0
7 6 loop6 0 0 0 0 0 0 0 0 0 0 0
7 7 loop7 0 0 0 0 0 0 0 0 0 0 0
253 1 dm-1 309693 0 2477544 4316532 1989959 0 15919672 1956711660 0
489964 1961210648
root@jenkins:~#
I've hacked the plugin to make it work for that host by these changes (compared
to 2.0.24 in /usr):
matrix:~/Projects/jenkins.debian.net/jenkins.debian.net$ diff
etc/munin/plugins/iostat_ios /usr/share/munin/plugins/iostat_ios
104c104
< return 0 if ($major == 253); # LVM2 devices
---
> return 0 if ($major == 254); # LVM2 devices
108c108
< return 0 if ($tmpnam =~ /^\s*(?:sd|hd|vd)[a-z]\d+\s*$/);
---
> return 0 if ($tmpnam =~ /^\s*(?:sd|hd)[a-z]\d+\s*$/);
124c124
The second change is being tracked as "#767017 iostat_ios plugin should support
/dev/vdX".
The autoconfiguration of the plugin is a nice idea, but I think there are
several usecases where it's smart logic is not so smart at all. This is one.
cheers,
Holger
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