Can't mount SMB drives, worked before /"CIFS VFS: Error connecting to socket" RC -115

[skinnersbane]

I have a machine running Precise (12.04 x64), and I cannot mount my SMB drives (I have 3). It used to work (a week or two ago), and I didn't touch fstab! The machine hosting the shares is a commercial NAS, and I'm not seeing anything that would indicate it's an issue with the NAS.

I have an older machine which I updated to Precise at the same time (both fresh installed, not dist-upgrade), so should have a very similar configuration. It is not having any problems. Some packages are out of date on the working machine and the machine with the issue is up-to-date. I am not having problems on windows machines/partitions either, only one of my Precise machines.

The two machines are using identical entries in fstab and identical /etc/samba/smb.conf files. I don't think I've ever changed smb.conf (has never mattered before).

My fstab entries all basically look like this:

//10.1.1.111/public       /media/public        cifs  credentials=/home/skinnersbane/.credentials,iocharset=utf8,uid=skinnersbane,gid=skinnersbane,file_mode=0644,dir_mode=0755 0 0

Here's the dmesg output on boot:

[   51.162198] CIFS VFS: Error connecting to socket. Aborting operation
[   51.162369] CIFS VFS: cifs_mount failed w/return code = -115
[   51.194106] CIFS VFS: Error connecting to socket. Aborting operation
[   51.194250] CIFS VFS: cifs_mount failed w/return code = -115
[   51.198120] CIFS VFS: Error connecting to socket. Aborting operation
[   51.198243] CIFS VFS: cifs_mount failed w/return code = -115

There are no other errors I see in the dmesg output.

Originally when I ran 'testparm -s', the output contained these lines

ERROR: lock directory /var/run/samba does not exist
ERROR: pid directory /var/run/samba does not exist

Here's the samba related programs I have installed:

$ dpkg --list|grep -i samba
ii  libpam-winbind                                2:3.6.3-2ubuntu2.3                      Samba nameservice and authentication integration plugins
ii  libwbclient0                                  2:3.6.3-2ubuntu2.3                      Samba winbind client library
ii  nautilus-share                                0.7.3-1ubuntu2                          Nautilus extension to share folder using Samba
ii  python-smbc                                   1.0.13-0ubuntu1                         Python bindings for Samba clients (libsmbclient)
ii  samba-common                                  2:3.6.3-2ubuntu2.3                      common files used by both the Samba server and client
ii  samba-common-bin                              2:3.6.3-2ubuntu2.3                      common files used by both the Samba server and client
ii  winbind                                       2:3.6.3-2ubuntu2.3                      Samba nameservice integration server

$ dpkg --list|grep -i smb
ii  dmidecode                                     2.11-4                                  SMBIOS/DMI table decoder
ii  libsmbclient                                  2:3.6.3-2ubuntu2.3                      shared library for communication with SMB/CIFS servers
ii  python-smbc                                   1.0.13-0ubuntu1                         Python bindings for Samba clients (libsmbclient)
ii  smbclient                                     2:3.6.3-2ubuntu2.3                      command-line SMB/CIFS clients for Unix
ii  smbfs                                         2:5.1-1ubuntu1                          Common Internet File System utilities - compatibility package

$ dpkg --list|grep -i cifs
ii  cifs-utils                                    2:5.1-1ubuntu1                          Common Internet File System utilities
ii  libsmbclient                                  2:3.6.3-2ubuntu2.3                      shared library for communication with SMB/CIFS servers
ii  smbclient                                     2:3.6.3-2ubuntu2.3                      command-line SMB/CIFS clients for Unix

I originally noticed that my other machine had "libpam-winbind" and "nautilus-share" installed and the machine with the issue did not. Installing those two packages solved my errors with 'testparm -s', but did not fix my issue.

Finally, I tried to purge and reinstall these packages

• smbclient
• smbfs
• cifs-utils
• samba-common
• samba-common-bin

Still no luck. Again, it used to work; now it doesn't. Very similarly configured machine works (but some packages are out of date on the working machine). The NAS has only one interface/IP address, nmblookup works to find it's IP from it's hostname (from the machine with the issue) and it responds to a ping. Please any help would be great. I've been searching on AskUbuntu, SuperUser, ubuntuforums and plain old search engines for a week now and it's driving me crazy!

I have also posted this question on AskUbuntu.com (hopefully that's not a decision which will be met with hostility!) Thanks!

[skinnersbane]

[skinnersbane]

The problem was timeouts. I somehow got my internal IP on the NAS's blocklist (which I have configured to never expire). Problem fixed.