Btrfs

[remh]

It mimics the behavior of the btrfs fi df command.

[sirupsen]

Nice! I'll try to test this in production tomorrow.

[sirupsen]

\cc @graemej @burke

[sirupsen]

Another metric needed here is the subvolume count. This is important to monitor as well.

sudo btrfs subvolume list /u | wc -l is what we have in our script currently, but I'm sure there are more metrics in there that needs to be measured.

[remh]

The problem with these metrics is that it requires root access to perform these operations.

Do you know any workaround to get those without being root?

I'll be happy to implement it if so.

[sirupsen]

Yeah, there's no good way to get it then. Could you make it optional from the config, then you can add privileges to the datadog user with sudo to run that command?

[remh]

@sirupsen I created that gist https://gist.github.com/remh/4e9287f444b955dbbd1c that contains the subvolume count.

You'll need to give sudo rights to the dd-agent user.

I don't think we're going to add that in the default check for now as we prefer to avoid asking our users to give sudo rights to the dd-agent but feel free to add this check in your custom checks!