This bug was fixed in the package samba - 2:4.3.11+dfsg- 0ubuntu0.16.04.17 --------------- samba (2:4.3.11+dfsg-0ubuntu0.16.04.17) xenial; urgency=medium
* d/samba.nmbd.init, d/samba.samba-ad-dc.init, d/samba.smbd.init, d/winbind.init avoid issues due to init scripts misdetecting services (LP: #1792400) - use --pidfile on --start to not block on same binaries running in containers - use --exec on --stop to not cause unintended processes to be acted on, if the old process terminated without being able to remove the pid-file. -- Christian Ehrhardt <christian.ehrha...@canonical.com> Mon, 24 Sep 2018 12:08:45 +0200 ** Changed in: samba (Ubuntu Xenial) Status: Fix Committed => Fix Released -- You received this bug notification because you are a member of नेपाली भाषा समायोजकहरुको समूह, which is subscribed to Xenial. Matching subscriptions: Ubuntu 16.04 Bugs https://bugs.launchpad.net/bugs/1792400 Title: smbd failed in host when both lxd container and host have smbd Status in samba package in Ubuntu: Fix Released Status in samba source package in Trusty: Triaged Status in samba source package in Xenial: Fix Released Bug description: [Impact] * Issue: the current init script * won't start samba related services on the host if there is a process of the same binary in a container * might on stop affect a process that it was not intended to stop * Solution: Fix init scripts to * start action to have a safer process detection with containers around * stop action to not affect unintended processes due to stale pidfiles [Test Case] * 1. Start a container * 2. Start samba in the Container (or winbind or nmbd) * 3. Start samba in the host (or winbind or nmbd) => it will not start as such a binary is already running * #2 and #3 can be switched, and then as 4. restart smbd in the host => it will shut down but not re-start Fixed: The container process should have no influence This also fixes issues where the pidfile would not be updated * install and start smbd * "Simulate" a corrupted pidfile by putting the PID of a different process in it * stop the sambd service => without the fixes this will drag down the other process you put in the pidfile Fixed: a stale pidfile entry should not let non-smbd (or winbind, nmbd) processes be affected [Regression Potential] * We tried to think of all edge cases of these start/stop actions but didn't come up with one that is broken. Aside from missing one of those cases there might be non-archive scripts that expect the old behavior. But even for thse no critical ones came to my mind so far. Worst case there'd be a combination that leads to the service no(re-)starting after the SRU - so thinking about potential cases is important. [Other Info] * n/a --- Setup: install smbd in host and lxd-container. Now restart smbd in host: service smbd restart All is OK. Problem: nmap shows "closed" on ports 139 and 445. And users cannot use smbd server in host. ● smbd.service - LSB: start Samba SMB/CIFS daemon (smbd) Loaded: loaded (/etc/init.d/smbd; bad; vendor preset: enabled) Active: active (exited) since Die 2016-10-18 17:35:23 CEST; 2s ago Docs: man:systemd-sysv-generator(8) Process: 24218 ExecStop=/etc/init.d/smbd stop (code=exited, status=0/SUCCESS) Process: 21980 ExecReload=/etc/init.d/smbd reload (code=exited, status=0/SUCCESS) Process: 25190 ExecStart=/etc/init.d/smbd start (code=exited, status=0/SUCCESS) Okt 18 17:35:22 speedy systemd[1]: Starting LSB: start Samba SMB/CIFS daemon (smbd)... Okt 18 17:35:23 speedy smbd[25190]: * Starting SMB/CIFS daemon smbd Okt 18 17:35:23 speedy smbd[25190]: ...done. Okt 18 17:35:23 speedy systemd[1]: Started LSB: start Samba SMB/CIFS daemon (smbd). ps axf | grep smbd: 25356 pts/2 S+ 0:00 | \_ grep --color=auto smbd 19915 ? Ss 0:08 \_ /usr/sbin/smbd -D 19919 ? S 0:00 \_ /usr/sbin/smbd -D However, netstat -tpln | grep "smbd" returns nothing and also nmap shows "closed" on ports 139 and 445. Workaround [1]: change /etc/init.d/smbd: if ! start-stop-daemon --start --quiet --oknodo --exec /usr/sbin/smbd -- -D ; then to if ! start-stop-daemon --start --quiet --oknodo --pidfile /var/run/samba/smbd.pid --exec /usr/sbin/smbd -- -D ; then I reported this to: https://discuss.linuxcontainers.org/t/samba-in-host-and-container/2523 apt-cache policy samba samba: Installed: 2:4.3.11+dfsg-0ubuntu0.16.04.15 Candidate: 2:4.3.11+dfsg-0ubuntu0.16.04.16 Version table: 2:4.3.11+dfsg-0ubuntu0.16.04.16 500 500 http://de.archive.ubuntu.com/ubuntu xenial-updates/main amd64 Packages *** 2:4.3.11+dfsg-0ubuntu0.16.04.15 500 500 http://security.ubuntu.com/ubuntu xenial-security/main amd64 Packages 100 /var/lib/dpkg/status 2:4.3.8+dfsg-0ubuntu1 500 500 http://de.archive.ubuntu.com/ubuntu xenial/main amd64 Packages 1. https://serverfault.com/questions/810544/samba-daemon-does-not- work-as-systemd-service-but-works-in-foreground To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/samba/+bug/1792400/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~group.of.nepali.translators Post to : group.of.nepali.translators@lists.launchpad.net Unsubscribe : https://launchpad.net/~group.of.nepali.translators More help : https://help.launchpad.net/ListHelp