Hello,

I have to configure desktops, which mount samba shares as home drives. If files were used on the samba share, the system is unable to properly shutdown and hangs for minutes with the error : "Unmounting cifs filesystems: umount: device is busy. (In some cases useful info about processes that use the device is found by lsof(8) or fuser(1))"

I suppose it has to do with an update to CentOS 6.6,, especially the new kernel. I have two kernels on my system: a custom configured vanilla kernel 3.4.6 with Xenomai 2.6.3 and the actual CentOS standard kernel. Before my update, this problem did not occur with the CentOS kernels, only with the vanilla kernel.
After the update to CentOS 6.6 the system hangs while shutdown too, if it runs with CentOS kernel.

On the CentOS forum I got the advice to mount with autofs instead of pam_mount, because automounter is being shutdown before the network is shut down and so the cifs shares can be properly unmounted.
I mean, the system should shutdown without errors independent of the mount method, but I tried it with autofs. I could not get autofs working to mount samba shares as home drives (with pam_mount it worked well).

auto.master:
/home/people /etc/auto.people

auto.people:
* -fstype=cifs,username=& ://filer.hs-harz.de/&

/var/log/messages:
Feb 26 15:16:00 buslab1 kernel: Status code returned 0xc000006d NT_STATUS_LOGON_FAILURE
Feb 26 15:16:00 buslab1 kernel: CIFS VFS: Send error in SessSetup = -13
Feb 26 15:16:00 buslab1 kernel: CIFS VFS: cifs_mount failed w/return code = -13
(User authentication occurs with ldap.)

So what to do? Now I have 2 problems.

nobody an idea?