支持 localstorage 的维护模式，维护模式下可以进行卷的扩容，pod在调度时不会调度到维护模式的节点上

[caoyingjunz]

What's it about?

What's the reason why we need it?

I believe this is an important feature for Pixiu. There're a few use cases:

• case one
• case two
• ...

Please leave your comments below if there's anyone agrees with me. Or just give me a thumb up.

Area Suggestion

/kind feature-request