[Bug 1899968] Re: samba SMB share certain operations fail

2020-10-15 Thread Leon Weiß
It is ZFS with activated encryption and ACLs.
However, the error also occurs with a "normal" ext4 in the same constellation 
as described above.

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Title:
  samba SMB share certain operations fail

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[Bug 1899968] Re: samba SMB share certain operations fail

2020-10-15 Thread Leon Weiß
I may have written this a bit unclear, the client is a windows machine.
Using Ubuntu as a client works perfectly.


One scenario that reproduces the problem:
__

Server:
Ubuntu 20.04.1 LTS (Ubuntu 5.4.0-51.56-generic 5.4.65) with Samba 4.11.6-Ubuntu

Client: 
Windows 10 (10.0.18363)
Mounted a share from the server with the native windows smb client. The server 
displays this connection with the following parameters (smbstatus): Protocol 
SMB3_11, no encryption, signing partial(AES-128-CMAC)

Action:
Running git clone on the client in a shared directory 

Result:
git console out: fatal: cannot create directory at 'images': Directory not empty
git fails.


Switching servers:
__

When i switch the Server to a Ubuntu 18.04 with Samba 4.7.6 or a CentOS
with Samba 4.11 and leave the client configuration as-is, the git clone
action on the client does NOT fail.

I also tried setting the smb server log level to debug, but it does not
log anything when the error on the client occurs.



Below here is my smb.conf:
___


#=== Global Settings ===

[global]


## Browsing/Identification ###

   workgroup = WORKGROUP

   server string = nas

   dns proxy = no


 Debugging/Accounting 

   log file = /var/log/samba/log.%m

   max log size = 50

   syslog = 0

   panic action = /usr/share/samba/panic-action %d

   guest ok = no

   load printers = no


### Authentication ###


   server role = standalone server

   passdb backend = tdbsam

   obey pam restrictions = yes

   unix password sync = yes

   passwd program = /usr/bin/passwd %u
   passwd chat = *Enter\snew\s*\spassword:* %n\n *Retype\snew\s*\spassword:* 
%n\n *password\supdated\ssuccessfully* .

   pam password change = yes

   map to guest = never

   security = user


 Misc 

   usershare allow guests = no


[data]
  comment = "Data Storage"
  path = /media/data
  writeable = yes
  browseable = yes
  read only = no
  guest ok = no
  valid users = @shareadmins
  vfs objects = recycle
 recycle:keeptree = Yes
  force create mode = 0770
  force directory mode = 0770

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Title:
  samba SMB share certain operations fail

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[Bug 1899968] [NEW] samba SMB share certain operations fail

2020-10-15 Thread Leon Weiß
Public bug reported:

Samba SMB shares accessed from Windows or Mac OS don't work as expected
when using tools like Git or npm (node package manager).

Expected: For example, Git clones to a folder mounted via SMB, as it did
with previous ubuntu versions

What happened:
When using git clone in an smb mounted directory, git throws the following 
errors:
warning: unable to unlink 'images': Directory not empty
fatal: cannot create directory at 'images': Directory not empty

The errors vary a bit every run (stops at different files/dirs) when
extracting or doing other operations. Copying and writing from files via
the file browser works without a problem.


I could reproduce the error in the following environment with the latest 
updates applied:

Ubuntu 20.04.1 LTS (Ubuntu 5.4.0-51.56-generic 5.4.65)
Ubuntu 20.04.1 LTS (Ubuntu 5.4.0-48.52-generic 5.4.60)
Samba version 4.11.6-Ubuntu
Clients: Windows 10 Version 10.0.18363 Build 18363, Mac OS 10.13.6


On a fresh install with Ubuntu 18.04 (Samba 4.7.6) and CentOS 7 (Samba 4.11) as 
SMB servers the error does NOT occur, with the same standard smb.conf.

Also, setting the following options in smb.conf did NOT help:
mangled names = Yes
oplocks = False
level2 oplocks = False


I will happily provide any information/testing that is necessary.

Thank you

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

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Title:
  samba SMB share certain operations fail

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