# FilesystemUsage
Reads the filesystem usage of the given mountpoints.
This check reads the "available blocks" (not "free blocks") i.e. blocks available to unprivileged users.
## Check options
| mountpoints | `["/srv", "/home"]` | ❌ | |
### mountpoints
List of mountpoints to check.
## Alarm options
| level | `75` | ❌ | |
### level
Usage level threshold in percent.
The alarm will be triggered if the measured value exceeds this value.
## IDs
Equivalent to the "mountpoints" config option.
## Placeholders
- `level`: Filesystem space usage (in percent).