imaffe commented on issue #2067:
URL: https://github.com/apache/rocketmq/issues/2067#issuecomment-645163000
```
public static double getDiskPartitionSpaceUsedPercent(final String path)
{
if (null == path || path.isEmpty())
return -1;
try {
File file = new File(path);
if (!file.exists())
return -1;
long totalSpace = file.getTotalSpace();
if (totalSpace > 0) {
long freeSpace = file.getFreeSpace();
long usedSpace = totalSpace - freeSpace;
return usedSpace / (double) totalSpace;
}
} catch (Exception e) {
return -1;
}
return -1;
}
```
Here, if filePath is null or empty or got an exception, the ratio would be
-1; I would recommend use [Arthas](https://alibaba.github.io/arthas/) to make
sure the filePath is valid. Then we can try to print out the Exception message
here and see if it is permission related problems.
And I think this place we need to log what the exception is or record what
is the cause of returning -1. If you are interested in enhance this place feel
free to submit a PR.
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