[BackupPC-users] No Files dumped for share C$ - NT_STATUS_INVALID_PARAMETER

[Christopher D. <ed...@ot...>]

Hello dear backuppc users,

I'm struggling setting up BackupPC to backup a windows 10 host via SMB.

Here is the XferLOG:

Running: /usr/bin/smbclient \\\\pc-name\\C\$ -U domain\\user -E -d 1 -m SMB3 -c tarmode\ full -Tc - /Users/username/AppData/ /Users/username/Documents/backupipad.bak /Windows/
full backup started for share C$
Xfer PIDs are now 14095,14094
WARNING: The "syslog" option is deprecated
Domain=[DOMAIN] OS=[] Server=[]
tar:316  tarmode is now full, system, hidden, noreset, quiet
NT_STATUS_INVALID_PARAMETER listing \\Users\username\AppData\
tar:786  do_list failed on Users\username\AppData\ (NT_STATUS_INVALID_PARAMETER)
tar:712  Total bytes received: 0
tarExtract: Done: 0 errors, 0 filesExist, 0 sizeExist, 0 sizeExistComp, 0 filesTotal, 0 sizeTotal
Got fatal error during xfer (No files dumped for share C$)
Backup aborted (No files dumped for share C$)
Not saving this as a partial backup since it has fewer files than the prior one (got 0 and 0 files versus 0)

The backups aborts with the error "No files dumped for share C$".

The error comes from smbclient and is caused by the doubled backslash in
the backup files only parameter:
\\Users\username\AppData\

The odd point here is, that I hadn't configured it with backslashes at all.
You can see it in the backup command in the first line.
So, it seems as BackupPC replaces the slashes.

I've tried several things to solve this on my own but with no success.
I started with debian 7 and backuppc 3.3.1 and updated my system in
steps up to Debian 9 (stretch) now with the most up-to-date BackupPC
4.2.1 from Github.

I asked about this topic a few days ago here without response, so I
liked to give an updated status.
See https://sourceforge.net/p/backuppc/mailman/message/36386843/

It is no problem to backup a whole share or a folder under the root
share, but as I try to backup directories deeper than that, the backup
fails.

Every help is highly appreciated!

Thank you.

Kind Regards
Christopher