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[imker <question634563@xxxxxxxxxxxxxxxxxxxxx>]

New question #634563 on samba4 in Ubuntu:
https://answers.launchpad.net/ubuntu/+source/samba4/+question/634563

Hello everybody,

since a view versions I can observe the following behaviour of my samba installation on ubuntu 16.04 (Package Version: 4.3.11-Ubuntu).

When I restart the samba service, e. g. after installing samba updates, the nmbd process start to consume all the CPU available (100 % load on all cores). 
I found out that it does not help to restart the samba service or the whole server.

But what helps when I umount the shares from all clients that use the smb shares via smbfs and then mount the shares again. As soon as all clients remounted all shares the CPU load of all samba related processes is fine again on the server. Funny detail: The clients don't show any strange behaviour before I remount the shares.

My Clients using smbfs are Ubuntu 16.04 and Ubuntu 17.04 installations with default samba packages.
By the way. I don't need to touch my windows clients to solve this. 

Do you have any idea why this happen, and how to avoid?
Thanks 
Imker


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