Automatically create directory when subdir's location does not exist #1709
Description
What would you like to be added:
When I specify a directory that does not exist through the subdir option, the juicefs mount fails.
I hope subdir can be created automatically when the directory does not exist, just like subPath.
Why is this needed:
Although subPath can mount subdirectories, it cannot be operated with the juicefs command in the application pod.
The subdir option does not support automatic creation of new directories, which makes some business logic difficult to implement.