[Samba] Can use mutexes only with MUTEX_LOCKING or NOLOCK

[Davide Principi]

After upgrading my DC from 4.6 to 4.7 I found the following error from
my backup procedure:

    bash-4.2# tdbbackup /var/lib/samba/private/netlogon_creds_cli.tdb
    tdb_mutex_open_ok[/var/lib/samba/private/netlogon_creds_cli.tdb]: Can use mutexes only with MUTEX_LOCKING or NOLOCK
    Failed to open /var/lib/samba/private/netlogon_creds_cli.tdb

The problem occurs only with netlogon_creds_cli.tdb file. Backups of other .tdb files are created successfully.

Did anyone experience the same problem? How to fix it?


-- 
Davide Principi

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