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CIFS share hangs on Debian



Hi,

I'm seeing some issues CIFS mounts on systems running Debian 9 and 10.  The Debian 9 system seems to have more issues, I suspect there is a kernel bug. But when trying to write a file to a CIFS mount, I occasionally see errors like:

[Thu Dec  3 11:08:32 2020] CIFS VFS: Server XXXXX has not responded in 120 seconds. Reconnecting...
[Thu Dec  3 11:08:32 2020] CIFS VFS: Free previous auth_key.response = ffff8be599d06800
[Thu Dec  3 16:33:47 2020] CIFS VFS: Close unmatched open
[Thu Dec  3 20:35:31 2020] CIFS VFS: Close unmatched open

The Debian 10 systems see the same reconnection and "Free previous auth_key.response" messages but don't see the "Close unmatched open" messages. 

I'm seeing some suggestions these issues are related to some potential kernel bugs, but I'm not seeing any specific fixes for Debian. Do these errors ring any bells with anyone?

--
Dale Harris
rodmur@gmail.com
/.-)

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