[Gluster-users] Bareos backup from Gluster mount

[Ryan Clough]

Hello,

I have cross-posted this question in the bareos-users mailing list.

Wondering if anyone has tried this because I am unable to backup data that
is mounted via Gluster Fuse or Gluster NFS. Basically, I have the Gluster
volume mounted on the Bareos Director which also has the tape changer
attached.

Here is some information about versions:
Bareos version 14.2.2
Gluster version 3.7.2
Scientific Linux version 6.6

Our Gluster volume consists of two nodes in distribute only. Here is the
configuration of our volume:
[root at hgluster02 ~]# gluster volume info

Volume Name: export_volume
Type: Distribute
Volume ID: c74cc970-31e2-4924-a244-4c70d958dadb
Status: Started
Number of Bricks: 2
Transport-type: tcp
Bricks:
Brick1: hgluster01:/gluster_data
Brick2: hgluster02:/gluster_data
Options Reconfigured:
performance.io-thread-count: 24
server.event-threads: 20
client.event-threads: 4
performance.readdir-ahead: on
features.inode-quota: on
features.quota: on
nfs.disable: off
auth.allow: 192.168.10.*,10.0.10.*,10.8.0.*,10.2.0.*,10.0.60.*
server.allow-insecure: on
server.root-squash: on
performance.read-ahead: on
features.quota-deem-statfs: on
diagnostics.brick-log-level: WARNING

When I try to backup a directory from Gluster Fuse or Gluster NFS mount and
I monitor the network communication I only see data being pulled from the
hgluster01 brick. When the job finishes Bareos thinks that it completed
without error but included in the messages for the job are lots and lots of
permission denied errors like this:
15-Jul 02:03 ripper.red.dsic.com-fd JobId 613:      Cannot open
"/export/rclough/psdv-2014-archives-2/scan_111.tar.bak": ERR=Permission
denied.
15-Jul 02:03 ripper.red.dsic.com-fd JobId 613:      Cannot open
"/export/rclough/psdv-2014-archives-2/run_219.tar.bak": ERR=Permission
denied.
15-Jul 02:03 ripper.red.dsic.com-fd JobId 613:      Cannot open
"/export/rclough/psdv-2014-archives-2/scan_112.tar.bak": ERR=Permission
denied.
15-Jul 02:03 ripper.red.dsic.com-fd JobId 613:      Cannot open
"/export/rclough/psdv-2014-archives-2/run_220.tar.bak": ERR=Permission
denied.
15-Jul 02:03 ripper.red.dsic.com-fd JobId 613:      Cannot open
"/export/rclough/psdv-2014-archives-2/scan_114.tar.bak": ERR=Permission
denied.

At first I thought this might be a root-squash problem but, if I try to
read/copy a file using the root user from the Bareos server that is trying
to do the backup, I can read files just fine.

When the job finishes is reports that it finished "OK -- with warnings"
but, again the log for the job is filled with "ERR=Permission denied"
messages. In my opinion, this job did not finish OK and should be Failed.
Some of the files from the HGluster02 brick are backed up but all of the
ones with permission errors do not. When I restore the job, all of the
files with permission errors are empty.

Has anyone successfully used Bareos to backup data from Gluster mounts?
This is an important use case for us because this is the largest single
volume that we have to prepare large amounts of data to be archived.

Thank you for your time,
___________________________________________
¯\_(ツ)_/¯
Ryan Clough
Information Systems
Decision Sciences International Corporation
<http://www.decisionsciencescorp.com/>
<http://www.decisionsciencescorp.com/>

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