| 1 | ### Understand the alert |
| 2 | |
| 3 | This alarm presents the percentage of used `inodes` storage of a particular disk. |
| 4 | |
| 5 | The number of `inodes` indicates the number of files and folders you have. An `inode` is a data structure, containing metadata about a file. All filenames are internally mapped to respective `inode` numbers, so if you have a |
| 6 | lot of files, it means there are a lot of `inodes`. |
| 7 | |
| 8 | If the alarm is raised, it means that your storage device is running out of `inode` space. Each disk has a particular **limitation on the amount of `inodes` it can store**, determined by its size. |
| 9 | |
| 10 | Many modern filesystems use dynamically allocated `inodes` instead of a static table. These should not be presented on the charts associated with this alarm, and should not ever trigger it. If such a filesystem **does** trigger this alarm, and it's constantly reporting max `inode` usage, it's probably a bug in the filesystem driver. Some such filesystems incorrectly report having max `inode` count when they should not because they have no max limit, and in turn they trigger a false positive alarm. |
| 11 | |
| 12 | ### Troubleshoot the alert |
| 13 | |
| 14 | Clear cache files or delete unnecessary files and folders |
| 15 | |
| 16 | - To reduce the amount of how many `inodes` you store currently, you can clear your cache, trash any unnecessary files and folders in your system. |
| 17 | |
| 18 | We strongly suggest that you practice a high degree of caution when cleaning up drives, and removing files, make sure that you are certain that you delete only unnecessary files. |
| 19 | |
| 20 | ### Useful resources |
| 21 | |
| 22 | [Linux Inodes](https://www.javatpoint.com/linux-inodes) |
| 23 | [Understanding UNIX / Linux filesystem Inodes](https://www.cyberciti.biz/tips/understanding-unixlinux-filesystem-inodes.html) |