mdstat: Check if a certain amount of spares are present

[chschenk]

This pull request adds a plugin option to check if a certain amount of spares in an md array are present:

Example:
check_raid --plugin-option=mdstat_spare_count="md126:3,md127:2"

checks that md126 has at least 3 spares and that md127 has at least 2 spares

[glensc]

can you add some tests to the new code paths?

[chschenk]

I have added some test data and some tests. What do you think on this PR? Any chance to get this included?

[glensc]

looks like my previous comment was never posted

the tests pass, so looks good.

ideally i'd not make the methods even longer, but use subroutines. but the cleanup can be done later as well.

[glensc]

I wonder how would users find the options/features like this?

Do you mind writing some pod documentation to specific plugin header?

this would be first plugin having such doc, so you can be creative ;)

[glensc]

you can grab new version from snapshot build

• check_raid-4.0.8-32-g3fa8e16.pl
• nagios-plugin-check-raid_4.0.8-0.32.g3fa8e16_all.deb
• nagios-plugin-check_raid-4.0.8-0.32.g3fa8e16.noarch.rpm