The file system of Linux VM suddenly became read-only

Hi everyone,

I have a strange problem that there are many people faced few years ago. The filesystem of my Linux VM on azure suddenly became "read-only" so that I cannot even do any operations on it. I have tried to delete the VM and create a new one with the current VHD, but it was still "read-only". Is there any one have such kind of problem too...?

Thanks

Yu-Hsin Hung