On mercredi, 7 décembre 2016 23.35:30 h CET 74cmonty wrote:
> Am Mittwoch, 7. Dezember 2016 17:24:30 UTC+1 schrieb Bruno Friedmann:
> > On mercredi, 7 décembre 2016 06.43:30 h CET 74cmonty wrote:
> > > Hello!
> > > 
> > > The files on the client that are identified for backup have restricted
> > > permissions 640 and have a specific owner/group.
> > > 
> > > When I run a backup I get this error:
> > > ERR=Permission denied.
> > > 
> > > The error message is clear, and the root cause is that the Bareos user
> > > accessing the files on the client has insufficient permissions.
> > > 
> > > Question:
> > > Which user is reading files on client for backup?
> > > 
> > > I've tried to add user 'bareos' to the group w/o success.
> > > 
> > > THX
> > 
> > By default the bareos-fd user is root.
> > It's means two things, the bareos-fd on your installation is not using
> > root
> > otherwise some special attributes have been set on those files.
> > 
> > ps auxw | grep bareos-fd should show you root
> > systemctl show bareos-fd.service should show it too (if used on decent
> > modern distribution)
> > 
> > Notice as you didn't precise it, under windows it use the system service
> > account. Some users (terrible under windows) remove everybody, even for
> > system account the right to read their file. Then you have to start
> > training lesson to explain to user, if you don't let the system account
> > read your file for backup then you have no backup :-)
> 
> Indeed the user account for service bareos-fd is root:
>  ps auxw | grep bar
> root      38459  0.2  0.0 170624  2988 ?        Ssl  Dec02  20:48
> /usr/sbin/bareos-fd bareos    79101  0.1  0.0  90000  3200 ?        Ssl 
> Nov28  26:16 /usr/sbin/bareos-sd
> 
> The OS is SLES11SP4; files on client to backup are:
> ll /Backup_NewDB_BS4/data/
> total 198928404
> -rw-r----- 1 bs4adm sapsys       155648 Dec  7 14:42
> backup_BS4_bareos-schedule-20161207_144219_databackup_0_1 -rw-r----- 1
> bs4adm sapsys    100671488 Dec  7 14:42
> backup_BS4_bareos-schedule-20161207_144219_databackup_1_1 -rw-r----- 1
> bs4adm sapsys     83894272 Dec  7 14:42
> backup_BS4_bareos-schedule-20161207_144219_databackup_2_1 -rw-r----- 1
> bs4adm sapsys 202719109120 Dec  7 15:12
> backup_BS4_bareos-schedule-20161207_144219_databackup_3_1
> 
> Do you see any solution to backup these files other then modifying the
> permissions (chmod o+r)?

No clear idea still from those informations. 
This is the what I would investigate.

What about the top rights ?
a getfacl -R /Backup_NewDB_BS4 

Also when the deny access occur, did you get any message in dmesg ?

Did the bareos-fd init script has some special flags or confined by apparmor ?


-- 

Bruno Friedmann 
 Ioda-Net Sàrl www.ioda-net.ch
 Bareos Partner, openSUSE Member, fsfe fellowship
 GPG KEY : D5C9B751C4653227
 irc: tigerfoot

openSUSE Tumbleweed
Linux 4.8.12-1-default x86_64 GNU/Linux, nvidia: 375.20
Qt: 5.7.0, KDE Frameworks: 5.28.0, Plasma: 5.8.4, kmail2 5.3.3 (QtWebEngine)

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