Samba running on s390 system stops responding and needs to be restarted
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SUSE Linux Enterprise Server 11 Service Pack 3 (SLES 11 SP3)
Kernel: 3.0.93-0.8-default s390x
Product: samba-3.6.3-0.42.1 Sun Nov 3 08:00:08 2013
A LAN trace during the outage shows an NT Create AndX Request being TCP ACK'd by the server but Samba never responds.
A restart of Samba resolves the issue for a while.
use mmap = no
Save the change
Restart Samba (rcsmb restart)
The restart of Samba recreated them and Samba worked until the next instance of the corruption.
Here is the mmap setting as described in the man page for the smb.conf file.
This global parameter determines if the tdb internals of Samba can depend on mmap working correctly on the running system. Samba requires a coherent mmap/read-write system memory cache. Currently only HPUX does not have such a coherent cache, and so this parameter is set to
noby default on HPUX. On all other systems this parameter should be left alone. This parameter is provided to help the Samba developers track down problems with the tdb internal code.
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- Document ID:7015515
- Creation Date: 12-Aug-2014
- Modified Date:03-Mar-2020
- SUSE Linux Enterprise Server
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