[Bug 1339434] [NEW] Samba4 get stuck after a server reboot, if IPv6 is enabled.

Thiago Martins thiagocmartinsc at gmail.com
Wed Jul 9 01:16:11 UTC 2014


Public bug reported:

Guys,

I'm trying to deploy Samba4 AD DC with IPv6 and I'm facing a hard time
(LP #1335502)... First, it didn't worked "as-is", now, after enabling
IPv6 in Samba4 AD DC, it does not come up after a server reboot, it get
stucked, look:

---
root at ubuntu-ad-1:~# host -t SRV _ldap._tcp.tcmc.com.br
_ldap._tcp.tcmc.com.br has SRV record 0 100 389 ubuntu-ad-1.tcmc.com.br.
root at ubuntu-ad-1:~# reboot

Broadcast message from administrativo at ubuntu-ad-1
 (/dev/pts/2) at 22:10 ...

The system is going down for reboot NOW!
root at ubuntu-ad-1:~# Connection to 192.168.15.221 closed by remote host.
Connection to 192.168.15.221 closed.

--

tmartins at zion:~$ ssh administrativo at 192.168.15.221
administrativo at 192.168.15.221's password:
Welcome to Ubuntu 14.04 LTS (GNU/Linux 3.13.0-30-generic x86_64)

 * Documentation:  https://help.ubuntu.com/
Last login: Tue Jul  8 22:09:22 2014 from 192.168.0.104
administrativo at ubuntu-ad-1:~$ sudo -i
[sudo] password for administrativo:
root at ubuntu-ad-1:~# host -t SRV _ldap._tcp.tcmc.com.br
Host _ldap._tcp.tcmc.com.br not found: 3(NXDOMAIN)
root at ubuntu-ad-1:~#
---

Then, I tried:

---
root at ubuntu-ad-1:~# pidof samba
675

root at ubuntu-ad-1:~# pidof smbd
791 719

root at ubuntu-ad-1:~# host -t SRV _ldap._tcp.tcmc.com.br
Host _ldap._tcp.tcmc.com.br not found: 3(NXDOMAIN)
---

See it?!

Now I'm doing:

---
root at ubuntu-ad-1:~# ps xfa
....
  461 ?        S      0:00 avahi-daemon: running [ubuntu-ad-1.local]
  462 ?        S      0:00  \_ avahi-daemon: chroot helper
  675 ?        S      0:00 samba -D
  719 ?        Ss     0:00  \_ /usr/sbin/smbd -D --option=server role check:inhibit=yes --f
  791 ?        S      0:00      \_ /usr/sbin/smbd -D --option=server role check:inhibit=yes
  728 ?        Ss     0:00 /usr/sbin/cups-browsed
  745 ?        S      0:00 upstart-file-bridge --daemon
....
---

So, samba is stucked, I'm not seeing the others "samba" child process as
usual, then I tried:

---
root at ubuntu-ad-1:~# service samba-ad-dc stop
stop: Unknown instance:

root at ubuntu-ad-1:~# killall samba smbd
root at ubuntu-ad-1:~#

root at ubuntu-ad-1:~# service samba-ad-dc start
samba-ad-dc start/running, process 1446

root at ubuntu-ad-1:~# host -t SRV _ldap._tcp.tcmc.com.br
_ldap._tcp.tcmc.com.br has SRV record 0 100 389 ubuntu-ad-1.tcmc.com.br.
---

Back online!!

I believe that there is something wrong with the Samba4 init scripts
when we have IPv6 enabled.

Cheers!
Thiago

** Affects: samba (Ubuntu)
     Importance: Undecided
         Status: New

** Description changed:

  Guys,
  
  I'm trying to deploy Samba4 AD DC with IPv6 and I'm facing a hard time
  (LP #1335502)... First, it didn't worked "as-is", now, after enabling
- IPv6 in Samba4, it doe not come up after a server reboot, it get
+ IPv6 in Samba4 AD DC, it does not come up after a server reboot, it get
  stucked, look:
  
  ---
  root at ubuntu-ad-1:~# host -t SRV _ldap._tcp.tcmc.com.br
  _ldap._tcp.tcmc.com.br has SRV record 0 100 389 ubuntu-ad-1.tcmc.com.br.
  root at ubuntu-ad-1:~# reboot
  
  Broadcast message from administrativo at ubuntu-ad-1
- 	(/dev/pts/2) at 22:10 ...
+  (/dev/pts/2) at 22:10 ...
  
  The system is going down for reboot NOW!
  root at ubuntu-ad-1:~# Connection to 192.168.15.221 closed by remote host.
  Connection to 192.168.15.221 closed.
  
  --
  
  tmartins at zion:~$ ssh administrativo at 192.168.15.221
- administrativo at 192.168.15.221's password: 
+ administrativo at 192.168.15.221's password:
  Welcome to Ubuntu 14.04 LTS (GNU/Linux 3.13.0-30-generic x86_64)
  
-  * Documentation:  https://help.ubuntu.com/
+  * Documentation:  https://help.ubuntu.com/
  Last login: Tue Jul  8 22:09:22 2014 from 192.168.0.104
  administrativo at ubuntu-ad-1:~$ sudo -i
- [sudo] password for administrativo: 
+ [sudo] password for administrativo:
  root at ubuntu-ad-1:~# host -t SRV _ldap._tcp.tcmc.com.br
  Host _ldap._tcp.tcmc.com.br not found: 3(NXDOMAIN)
- root at ubuntu-ad-1:~# 
+ root at ubuntu-ad-1:~#
  ---
  
  Then, I tried:
  
  ---
  root at ubuntu-ad-1:~# pidof samba
  675
  
  root at ubuntu-ad-1:~# pidof smbd
  791 719
  
  root at ubuntu-ad-1:~# host -t SRV _ldap._tcp.tcmc.com.br
  Host _ldap._tcp.tcmc.com.br not found: 3(NXDOMAIN)
  ---
  
  See it?!
  
  Now I'm doing:
  
  ---
  root at ubuntu-ad-1:~# ps xfa
  ....
-   461 ?        S      0:00 avahi-daemon: running [ubuntu-ad-1.local]
-   462 ?        S      0:00  \_ avahi-daemon: chroot helper
-   675 ?        S      0:00 samba -D
-   719 ?        Ss     0:00  \_ /usr/sbin/smbd -D --option=server role check:inhibit=yes --f
-   791 ?        S      0:00      \_ /usr/sbin/smbd -D --option=server role check:inhibit=yes
-   728 ?        Ss     0:00 /usr/sbin/cups-browsed
-   745 ?        S      0:00 upstart-file-bridge --daemon
+   461 ?        S      0:00 avahi-daemon: running [ubuntu-ad-1.local]
+   462 ?        S      0:00  \_ avahi-daemon: chroot helper
+   675 ?        S      0:00 samba -D
+   719 ?        Ss     0:00  \_ /usr/sbin/smbd -D --option=server role check:inhibit=yes --f
+   791 ?        S      0:00      \_ /usr/sbin/smbd -D --option=server role check:inhibit=yes
+   728 ?        Ss     0:00 /usr/sbin/cups-browsed
+   745 ?        S      0:00 upstart-file-bridge --daemon
  ....
  ---
  
  So, samba is stucked, I'm not seeing the others "samba" child process as
  usual, then I tried:
  
  ---
  root at ubuntu-ad-1:~# service samba-ad-dc stop
- stop: Unknown instance: 
+ stop: Unknown instance:
  
  root at ubuntu-ad-1:~# killall samba smbd
- root at ubuntu-ad-1:~# 
+ root at ubuntu-ad-1:~#
  
  root at ubuntu-ad-1:~# service samba-ad-dc start
  samba-ad-dc start/running, process 1446
  
  root at ubuntu-ad-1:~# host -t SRV _ldap._tcp.tcmc.com.br
  _ldap._tcp.tcmc.com.br has SRV record 0 100 389 ubuntu-ad-1.tcmc.com.br.
  ---
  
  Back online!!
  
  I believe that there is something wrong with the Samba4 init scripts
  when we have IPv6 enabled.
  
  Cheers!
  Thiago

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https://bugs.launchpad.net/bugs/1339434

Title:
  Samba4 get stuck after a server reboot, if IPv6 is enabled.

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