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Measures reported by NfsLinuxMountTest
If an NFS file system fails, the directories mapped to the NFS file system will be unavailable. Accesses to these directories/files will take a long time and ultimately fail. This could potentially result in application failures and outages. Hence, administrators need the capability to detect when an NFS file system is unavailable or is running out of space. This test provides administrators with this capability.
This test executes on an NFS client, auto-discovers all NFS-mounted directories, and reports in real-time the availability and space usage of each of these directories.
The measures made by this test are as follows:
| Measurement |
Description |
Measurement Unit |
Interpretation |
| Availability |
Indicates whether the directory is accessible or not. |
Percent |
The value 100 indicates that the mounted NFS is accessible.
The value 0 indicates that the mounted NFS is not accessible.
|
| Total_capacity |
Indicates the current total capacity of the mounted system disk partition. |
MB |
|
| Used_space |
Indicates the amount of space currently used in a mounted system disk partition. |
MB |
|
| Free_space |
Indicates the free space currently available on a disk partition of a mounted system. |
MB |
|
| Percent_usage |
Indicates the percentage of space used on a mounted system disk partition. |
Percent |
Ideally, this value should be low. A high value or a value close to 100% is indicative of excessive space usage on this mounted system disk partition. If a number of NFS directories are exhibiting similar usage patterns, it is a definite cause for concern, as it indicates that the NFS file system as a whole coule be running out of space. If this situation is not brought under control soon, application failures and outages will become inevitable!
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