samba - Oct 2024 - samba-tool domain backup offline fails.

Hello all,
Hoping I never have to restore it, I'm trying to do an offline backup of my
domain. On a DC I "croned" /usr/bin/samba-tool domain backup offline
--targetdir=/usr/local/backups/samba

The backup systematically fails leaving a folder
INCOMPLETEsambabackupfileXXXXX with a small .tar inside.
If I run it "by hand", I get the same result. The (what I think is
the)
relevant part of the error is:

running offline ntacl backup of sysvol
py_smbd_create_file: init_files_struct failed: NT_STATUS_INVALID_PARAMETER
ERROR(runtime): uncaught exception - (3221225485, 'An invalid parameter was
passed to a service or function.')
  File "/usr/lib/python3/dist-packages/samba/netcmd/__init__.py", line
279,
in _run
    return self.run(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3/dist-packages/samba/netcmd/domain/backup.py",
line
1219, in run
    backup_offline(paths.sysvol, sysvol_tar, paths.smbconf, dom_sid)
  File "/usr/lib/python3/dist-packages/samba/ntacls.py", line 583, in
backup_offline
    smbd.create_file(dst, session_info, service)

I don't Python, and all I could think of was to check the sysvol
permissions and, just in case, reset them according to
https://wiki.samba.org/index.php/Sysvolreset.
Same result.


Kinda out of ideas here.... and, as usually, any help is appreciated.

Try this maintenance procedures and report back:

http://samba.bigbird.es/doku.php?id=samba:dc-maintenance


?? ?Find and delete ?tombstone? items

samba-tool domain tombstones expunge --tombstone-lifetime=0

?? ?Check domain databases and automatically fix things.

samba-tool dbcheck --cross-ncs --fix --yes

On 12 Oct 2024 at 18:53 +0100, Carlos Jesus via samba <samba at
lists.samba.org>, wrote:
> Hello all,
> Hoping I never have to restore it, I'm trying to do an offline backup
of my
> domain. On a DC I "croned" /usr/bin/samba-tool domain backup
offline
> --targetdir=/usr/local/backups/samba
>
> The backup systematically fails leaving a folder
> INCOMPLETEsambabackupfileXXXXX with a small .tar inside.
> If I run it "by hand", I get the same result. The (what I think
is the)
> relevant part of the error is:
>
> running offline ntacl backup of sysvol
> py_smbd_create_file: init_files_struct failed: NT_STATUS_INVALID_PARAMETER
> ERROR(runtime): uncaught exception - (3221225485, 'An invalid parameter
was
> passed to a service or function.')
> File "/usr/lib/python3/dist-packages/samba/netcmd/__init__.py",
line 279,
> in _run
> return self.run(*args, **kwargs)
> ^^^^^^^^^^^^^^^^^^^^^^^^^
> File
"/usr/lib/python3/dist-packages/samba/netcmd/domain/backup.py", line
> 1219, in run
> backup_offline(paths.sysvol, sysvol_tar, paths.smbconf, dom_sid)
> File "/usr/lib/python3/dist-packages/samba/ntacls.py", line 583,
in
> backup_offline
> smbd.create_file(dst, session_info, service)
>
> I don't Python, and all I could think of was to check the sysvol
> permissions and, just in case, reset them according to
> https://wiki.samba.org/index.php/Sysvolreset.
> Same result.
>
>
> Kinda out of ideas here.... and, as usually, any help is appreciated.
> --
> To unsubscribe from this list go to the following URL and read the
> instructions: https://lists.samba.org/mailman/options/samba

On 13/10/24 6:53 am, Carlos Jesus via samba wrote:
> Hello all,
> Hoping I never have to restore it, I'm trying to do an offline backup
of my
> domain. On a DC I "croned" /usr/bin/samba-tool domain backup
offline
> --targetdir=/usr/local/backups/samba
> 
> The backup systematically fails leaving a folder
> INCOMPLETEsambabackupfileXXXXX with a small .tar inside.
> If I run it "by hand", I get the same result. The (what I think
is the)
> relevant part of the error is:
> 
> running offline ntacl backup of sysvol
> py_smbd_create_file: init_files_struct failed: NT_STATUS_INVALID_PARAMETER
> ERROR(runtime): uncaught exception - (3221225485, 'An invalid parameter
was
> passed to a service or function.')
>    File
"/usr/lib/python3/dist-packages/samba/netcmd/__init__.py", line 279,
> in _run
>      return self.run(*args, **kwargs)
>             ^^^^^^^^^^^^^^^^^^^^^^^^^
>    File
"/usr/lib/python3/dist-packages/samba/netcmd/domain/backup.py", line
> 1219, in run
>      backup_offline(paths.sysvol, sysvol_tar, paths.smbconf, dom_sid)
>    File "/usr/lib/python3/dist-packages/samba/ntacls.py", line
583, in
> backup_offline
>      smbd.create_file(dst, session_info, service)
> 
> I don't Python, and all I could think of was to check the sysvol
> permissions and, just in case, reset them according to
> https://wiki.samba.org/index.php/Sysvolreset.
> Same result.
> 
> 
> Kinda out of ideas here.... and, as usually, any help is appreciated.
This is just a guess? but do you have permission to write to 
/usr/local/backups/samba without using ?sudo??

Cheers,
Jennifer (she/her)