[Bug 1310792] [NEW] dfree command is not working anymore in samba

[Peter de Kraker]

Public bug reported:

I have a ZFS On Linux setup as my main backup/fileserver that uses
RaidZ1 (similar to raid 5: 3 disks, 1 parity).  Because Linux doesn't
show the free space correctly for the complete disk/mount point, the
disk space indicator on my Windows machine for this share gives the
wrong info. The solution in Samba 3 / Ubuntu 13.10 was to add a "dfree
command = scriptname" configuration option to smb.cnf that knew how to
figure out the correct disk space/usage. This was all working and the
total disk space was displayed correctly in Windows Explorer on the
client.

However, now after upgrading to 14.04, the diskspace suddenly gets
displayed all wrong again.  I checked the script (it worked ok) and even
let it output "0 0" to see if it actually gets called by samba, but
nothing changed on the indicator of my windows machine. I did reboots of
the server, and the client, and nothing changed. I also changed the
"dfree command" to a invalid scriptname, and moved it from global to a
share section. Nothing worked.

Testparm gives no errors, so it looks like samba somehow just ignores
this parameter. Manpage for smb.conf shows that the "dfree command"
option is available.

Looks like a regression to me, and is frustrating, because I can't see
how much space I am using on my fileserver.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: samba 2:4.1.6+dfsg-1ubuntu2
ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
Uname: Linux 3.13.0-24-generic x86_64
NonfreeKernelModules: zfs zunicode zavl zcommon znvpair
ApportVersion: 2.14.1-0ubuntu3
Architecture: amd64
CurrentDesktop: Unity
Date: Mon Apr 21 22:43:53 2014
InstallationDate: Installed on 2013-09-29 (204 days ago)
InstallationMedia: Ubuntu-Server 13.04 "Raring Ringtail" - Release amd64 (20130423.1)
NmbdLog:
 
OtherFailedConnect: Yes
SambaServerRegression: Yes
SmbConfIncluded: Yes
SourcePackage: samba
UpgradeStatus: Upgraded to trusty on 2014-04-21 (0 days ago)

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


** Tags: amd64 apport-bug third-party-packages trusty

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https://bugs.launchpad.net/bugs/1310792

Title:
  dfree command is not working anymore in samba

Status in “samba” package in Ubuntu:
  New

Bug description:
  I have a ZFS On Linux setup as my main backup/fileserver that uses
  RaidZ1 (similar to raid 5: 3 disks, 1 parity).  Because Linux doesn't
  show the free space correctly for the complete disk/mount point, the
  disk space indicator on my Windows machine for this share gives the
  wrong info. The solution in Samba 3 / Ubuntu 13.10 was to add a "dfree
  command = scriptname" configuration option to smb.cnf that knew how to
  figure out the correct disk space/usage. This was all working and the
  total disk space was displayed correctly in Windows Explorer on the
  client.

  However, now after upgrading to 14.04, the diskspace suddenly gets
  displayed all wrong again.  I checked the script (it worked ok) and
  even let it output "0 0" to see if it actually gets called by samba,
  but nothing changed on the indicator of my windows machine. I did
  reboots of the server, and the client, and nothing changed. I also
  changed the "dfree command" to a invalid scriptname, and moved it from
  global to a share section. Nothing worked.

  Testparm gives no errors, so it looks like samba somehow just ignores
  this parameter. Manpage for smb.conf shows that the "dfree command"
  option is available.

  Looks like a regression to me, and is frustrating, because I can't see
  how much space I am using on my fileserver.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: samba 2:4.1.6+dfsg-1ubuntu2
  ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
  Uname: Linux 3.13.0-24-generic x86_64
  NonfreeKernelModules: zfs zunicode zavl zcommon znvpair
  ApportVersion: 2.14.1-0ubuntu3
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Mon Apr 21 22:43:53 2014
  InstallationDate: Installed on 2013-09-29 (204 days ago)
  InstallationMedia: Ubuntu-Server 13.04 "Raring Ringtail" - Release amd64 (20130423.1)
  NmbdLog:
   
  OtherFailedConnect: Yes
  SambaServerRegression: Yes
  SmbConfIncluded: Yes
  SourcePackage: samba
  UpgradeStatus: Upgraded to trusty on 2014-04-21 (0 days ago)

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