[Samba] Losing connection to a DC
Rowland Penny
rpenny at samba.org
Thu Feb 14 08:40:30 UTC 2019
On Thu, 14 Feb 2019 09:15:54 +0100
LOKO MESO Michel via samba <samba at lists.samba.org> wrote:
> Hi,
>
> I am running samba/winbind 4.2.14 on Debian 8 which is joined to an
> Active Directory and would like to know if you have any idea with my
> issue. In my case, ntlm authentification is enabled in squid (proxy).
>
> Here is the problem that I am facing :
>
> "wbinfo -t" takes sometimes more than 30 secondes to display the
> result. For some reason, the server loses it's connection to the
> domain controller.
>
> I found the following line in /var/log/samba/log.wb-MY contains :
>
> [2019/02/13 15:02:19.850547, 0]
> ../source3/winbindd/winbindd_cm.c:918(cm_prepare_connection)
> cm_prepare_connection: mutex grab failed for my.domain
> [2019/02/13 15:03:09.928405, 0]
> ../source3/lib/util_tdb.c:493(tdb_chainlock_with_timeout_internal)
> tdb_chainlock_with_timeout_internal: alarm (40) timed out for key
> my.domain in tdb /var/run/samba/mutex.tdb
> [2019/02/13 15:03:09.928477, 0]
> ../source3/winbindd/winbindd_cm.c:918(cm_prepare_connection)
> cm_prepare_connection: mutex grab failed for my.domain
>
> What happens when /var/run/samba/mutex.tdb is locked with a timeout ?
> Does this mean that users authentication stops working and that the
> winbind is unable to comunicate with the DC ?
>
> Thanks,
>
> Michel
Please post your smb.conf
Rowland
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