[Bug 1430259] Re: Mounting CIFS share intermittent failure (CIFS error code -5)

[Alexander Fieroch]

Hi, I have the same problem with 16.04 and 17.10 but unfortunately I do not use winbind which I could remove as a workaround. I joined my PCs to AD using realm and SSSD, so no winbind is installed.
Does anyone know another workaround? Maybe you did not uninstall only winbind but a broken library too, which I could try to remove?

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Title:
  Mounting CIFS share intermittent failure (CIFS error code -5)

Status in cifs-utils package in Ubuntu:
  Confirmed

Bug description:
  I run a samba server on an Ubuntu 14.10 host and have several ubuntu
  clients as VM as well as separate device for media streaming.  On
  reboot for the VM's and media streamer sometimes the samba share
  connects without issue, sometimes it errors.  In all cases I can
  reconnect the share with a manual mount command or a 'mount -a'.

  Server process log never shows any errors, server client process logs
  never show error, only errors through are on the client which are
  either in dmesg output...

  Status code returned 0xc0000001 NT_STATUS_UNSUCCESSFUL
  CIFS VFS: Send error in SessSetup = -5
  CIFS VFS: cifs_mount failed w/return code = -5

  or on the cli directly after the mount command...

  mount error(5): Input/output error
  Refer to the mount.cifs(8) manual page (e.g. man mount.cifs)

  I've had this issue for many months and believed it to be a bad config
  somewhere as I could never find many other people with the similar
  symptoms (google).  Today I've found a bug report on debian
  (https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=746229) with the
  same problems.

  I've tried lots of different parameters for the mount command to see
  if any generate a different error or less frequent error but cannot
  see any differents.  My current mount command for a VM which
  demonstrates persistent issues is...

  //blackserver.273below.co.uk/share
  /mnt/share      cifs    username=XXXXX,password=XXXXX,sec=ntlm,hard
  0       0

  I've tried appending workgroup parameters into the mount etc and
  nothing seems to resolve.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: cifs-utils 2:6.0-1ubuntu2
  ProcVersionSignature: Ubuntu 3.13.0-46.77-generic 3.13.11-ckt15
  Uname: Linux 3.13.0-46-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.7
  Architecture: amd64
  Date: Tue Mar 10 11:06:04 2015
  InstallationDate: Installed on 2014-09-18 (172 days ago)
  InstallationMedia: Ubuntu-Server 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.3)
  SourcePackage: cifs-utils
  UpgradeStatus: No upgrade log present (probably fresh install)

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