BackupPC-users

[BackupPC-users] acls and xattrs attributes

2017-05-28 10:34:30
Subject: [BackupPC-users] acls and xattrs attributes
From: Bob of Donelson Trophy <bob AT donelsontrophy DOT net>
To: backuppc-users list <backuppc-users AT lists.sourceforge DOT net>
Date: Sun, 28 May 2017 09:16:12 -0500
Over two years ago I discovered that BackupPC v3 will not backup acl and xattr file attributes. At that time, it was suggested to try v4 (had just been released as beta(?), I think) and I did get an OS to run v4.0. It (v4.0) backups failed when "acls" and "xattrs" RsyncArgsExtra where activated. So, I worked out a simple alternative for the time being with rsync.

Now, let me explain my need. I have a Samba4 active directory setup with one machine acting as a member server that carries the redirected files from all the W workstations. This active directory requires the use of acls and xattrs file attributes.

Enter BackupPC v4.1.2 (now.) I have created a test rig to test bpc4 and it is backing up the active directory setup. Both domain controllers (these machines do NOT incorporate the use of "acls" and "xattrs" attributes) backup just fine. The member server (a file server), on the other hand, has acls and xattrs attributes activated on the /home directory but, will not backup the /home directory. All other directories are being backed up from the member server.

When I set "RsyncArgsExtra" to include "acls" and "xattrs" the machine backups up but the /home backup is empty. I have disabled one, then the other and finally both to see if BackupPC will backup the /home in any fashion, the /home directory remains empty.

A brief explanation of "acls" and "xattrs" settings on a member server. Only directories under /home have had any adjustments to these file attributes by the domain administrators. User files with in the subdirectories are adjusted to meet the needs of users on the workstations.

Therefore, it is my belief that this is the reason BackupPC v4.1.2 will not back up anything under the /home directory.

I have checked Rsync backups and they include these file attribute settings. So my question (finally) is this, if Rsync (on Ubuntu 16.04LTS uses Rsync 3.1.1-3ubuntu1) works with "acls" and "xattrs", why doesn't Rsync_bpc?

(Sorry for the lengthy explanation.)

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Bob Wooden
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