This is a cross-post of the github issue
<https://github.com/backuppc/backuppc/issues/175> you created 2 days ago.
I responded there.
Craig
On Thu, Dec 21, 2017 at 2:28 PM, Jens Potthast <
jens.potth...@innovation.uni-bremen.de> wrote:
> Hello list!
> After many hours of tests and research, I need your help.
>
> Here is a short-as-possible report of what is happening and what I've done
> already.
> Actually, I have three problems, but let's try to get the first one fixed
> first for a start.
>
> Why read any further?
> =====================
> If my environment is similar to your environment, you should test a direct
> restore operation on your hosts, just to be sure to have a valid
> backup-system in case of emergency. (Ok, restore to zip/tar does work :-))
>
> My environment
> ==============
> Backup-Server: BackupPC 4.1.5 running on Debian 8.10 with smbclient 4.2.14
> Host: Windows Server 2012 R2
>
> The situation
> =============
> Backing up is no problem*, but doing a direct restore is impossible.
>
> What happens?
> =============
> Using the (default) configuration for smb restore:
> $Conf{SmbClientRestoreCmd} = '$smbClientPath \\\\$host\\$shareName
> $I_option -U $userName -E -d 1 -c tarmode\\ full -mSMB3 -Tx -';
> The operation stops with:
> > tar:316 tarmode is now full, system, hidden, noreset, quiet
> > tar:1596 Can't mkdir test: NT_STATUS_OBJECT_NAME_COLLISION
>
> What I've done and checked so far
> =================================
> * As BackupPC user, I can connect to the windows host in an interactive
> smbclient-session.
> * While in smbclient-session: I'm able to create directories and put files
> on the host.
> * While in smbclient-session: Trying to create a directory, that already
> exists, I get the same error as above, what seems legit, since the
> directory
> exists.
> * Swapped my smb.conf with the vanilla smb.conf
> * Extracting files with BackupPC_tarCreate locally does work.
> * Piping BackupPC_tarCreate-command to smbclient-command manually and
> change
> path options: if the new path does not exists, it is successfully created,
> but then instantly stops with the error as seen above (since BackupPC tries
> to create the path as soon as it tries to put the actual file in the new
> directory).
> * Checked permissions for backuppc-smb-user on windows domain/filesystem.
> Although this was not likely, since smbclient-sessions do work.
> * Checked another environment: BackupPC 4.1.x on Debian 9.2 and Windows
> Server 2012 R2 as host on a different subnet - same error occurs. This
> system is only a couple of weeks old and does not serve any other purpose.
> This is, why I think that other users are affected, too.
>
> Possible solution
> =================
> Let BackupPC continue to work, if creation of a directory fails *just
> because* it already exists. Alternatively do not try to create a directory,
> if it already exists. (If smbclient is responsible for breaking the
> operation, please guide me to someone to contact.)
>
>
> *Since my setup has undergone some heavy migration work (moved from
> BackupPC
> 3.x to 4.x, moved my pool from v3 to v4), I have two other points to check
> that might be something only existing for my setup:
> - Filenames get chopped off after 97-99 characters. It's visible on the
> web-frontend, if you navigate to a file in a backup.
> - Some directories do net get backed up (yes, I checked permissions)
>
>
> Any input is really appreciated!
>
> Regards,
> Jens
>
>
>
>
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