Dear CIFS Experts, I hope you are all doing well. I am currently running AWS Linux 2023 and using cifs-utils with SMB3 to mount a share hosted on a Windows Server 2016. Recently, I encountered an issue after applying the February 2025 cumulative update to the Windows Server. Unfortunately, the update failed, and I reboot the server in a regular routine. After the reboot, I noticed that my Linux machine's journalctl logs contained the following messages: kernel:CIFS: Server share \\MyServer\Myshare deleted. kernel:CIFS: Server share \\MyServer\Myshare deleted. It appears that the mounted share was removed, and I am unsure how to proceed with troubleshooting this issue or what steps I can take to prevent similar occurrences in the future. My mount cmd options are "-t smb3 -o vers=3.0,rw,nocase,hard,file_mode=0700,dir_mode=0700" with other options about uid/gid, force them and login related. Would anyone be able to provide guidance or suggestions on how to diagnose and mitigate this problem? I would greatly appreciate any insights or recommendations you can share. In normal case, e.g if I shutdown the windows file server, the mount will remain and file access will be hung. And once the windows server is back, file access will be made again. Thank you in advance for your time and support. Best Regards, Jiadong
