[Bug 1690570] Re: dmesg CIFS VFS: src file seems to be from a different filesystem type for every file i copy/move to shared folder

Mon May 15 18:51:22 UTC 2017

@ChristianEhrhardt #1 - yea its me

#REPRODUCTION
-download lubuntu x64 14.04.5
-do a standard virtualbox machine clean.. no internet connection
-kernel will be 4.4.0.31
-then basic commands to install samba, cifs and basic share and mount

apt-get update
apt-get install samba cifs-utils
#at the moment samba=4.3.11 cifs-utils=6.0
---------------------------------------------
mkdir -p /home/d1/samba/share
mkdir -p /home/d1/samba/mount
chown -R d1.d1 /home/d1/samba

nano /etc/samba/smb.conf 
    [global]
    security = user
    workgroup = WORKGROUP"

    [share]
    path = /home/d1/samba/share
    writable = yes
    browsable = yes

restart smbd && restart nmbd
mount.cifs //127.0.0.1/share /home/d1/samba/mount -o username=d1,uid=d1,gid=d1
-------------------------------
-at this moment the share is created and mounted; open pcmanfm copy/move any file to the share and it will spam your dmesg with that message
-i tried to make an apport of virtualbox machine seems it gaved some errors..

obs: 
-its the same for buntu kernel 4.4.0.75/72
-ive also tested knoppix dvd 7.6.0/kernel 4.2.6-64 and mount.cifs from lubuntu spammed dmesg but mountcifs loop inside knoppix did not; knoppix has mount.cifs.v.6.4; it might be mount.cifs problem..
-ive also tested changing sources.list to debian stable.. it has mount.cifs 6.4; the bug appears both as mount loop and client-server

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Title:
  dmesg CIFS VFS: src file seems to be from a different filesystem type
  for every file i copy/move to shared folder

Status in linux package in Ubuntu:
  Incomplete
Status in samba package in Ubuntu:
  Confirmed

Bug description:
  #BASIC SETUP
  -server side: ext4 / lubuntu 14.04.5 / 4.4.0-72-generic #93~14.04.1-Ubuntu SMP .. i686 / samba 4.3.11
  -client side: ext4 / lubuntu 14.04.5 / 4.4.0-75-generic #96~14.04.1-Ubuntu SMP x86_64 / mount.cifs 6.0
  -both server and client are up-to-date
  -mount line: mount.cifs //ip/share /mountpoint -o username=user,password=pass,uid=buntu,gid=buntu

  #ANTERIOR WORKINGS PRIOR TO UPGRADES
  -the server worked fine prior to upgrading
  -the server had about 6 months prior to last upgrade (3 days ago)
  -the client had about 1 month prior to last upgrade (3 days ago)

  #THE PROBLEM
  -the "CIFS VFS: src file seems to be from a different filesystem type" appears inside dmesg for every file copy/move to server
  -the problem does not appear on connect with pcmanfm like smb://ip/share into the address bar
  -the problem does not appear on create,move,copy files through the mount straight on server

  #OTHER 
  -ive tested within virtualbox lubuntu 64 14.04.5 clean no upgrades apt-get install samba cifs-utils with the same problem
  -the copied/moved files seem do be fine.. checksum tested

  #EXPECTED RESULT
  -no error messages(ive read about lost files)
  -a clean workaround if possible(trough mount.cifs or samba options)
  --- 
  ApportVersion: 2.14.1-0ubuntu3.21
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  d1         1270 F.... lxpanel
  CRDA: Error: [Errno 2] No such file or directory
  CurrentDmesg:
   [ 5600.089933] FS-Cache: Netfs 'cifs' registered for caching
   [ 5600.091999] Key type cifs.spnego registered
   [ 5600.092020] Key type cifs.idmap registered
   [ 5686.295664] CIFS VFS: src file seems to be from a different filesystem type
  DistroRelease: Ubuntu 14.04
  HibernationDevice: RESUME=UUID=52e2e360-8017-437e-8fcd-994033d9eae4
  InstallationDate: Installed on 2017-04-30 (14 days ago)
  InstallationMedia: Lubuntu 14.04.5 LTS "Trusty Tahr" - Release amd64 (20160803)
  IwConfig:
   lo        no wireless extensions.

   eth0      no wireless extensions.
  Lsusb:
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
  MachineType: innotek GmbH VirtualBox
  Package: samba 2:4.3.11+dfsg-0ubuntu0.14.04.7
  PackageArchitecture: amd64
  ProcEnviron:
   LANGUAGE=en_US
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 vboxdrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-31-generic root=UUID=37d0c756-8698-4989-8ead-8064a36a2b49 ro quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 4.4.0-31.50~14.04.1-generic 4.4.13
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-31-generic N/A
   linux-backports-modules-4.4.0-31-generic  N/A
   linux-firmware                            1.127.22
  RfKill:

  SambaClientRegression: Yes
  Tags:  trusty trusty
  Uname: Linux 4.4.0-31-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:

  _MarkForUpload: True
  dmi.bios.date: 12/01/2006
  dmi.bios.vendor: innotek GmbH
  dmi.bios.version: VirtualBox
  dmi.board.name: VirtualBox
  dmi.board.vendor: Oracle Corporation
  dmi.board.version: 1.2
  dmi.chassis.type: 1
  dmi.chassis.vendor: Oracle Corporation
  dmi.modalias: dmi:bvninnotekGmbH:bvrVirtualBox:bd12/01/2006:svninnotekGmbH:pnVirtualBox:pvr1.2:rvnOracleCorporation:rnVirtualBox:rvr1.2:cvnOracleCorporation:ct1:cvr:
  dmi.product.name: VirtualBox
  dmi.product.version: 1.2
  dmi.sys.vendor: innotek GmbH

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