backup from gluster fs

[Frank Cherry]

Hi there,

what is the criteria for the Bareos FD to take a file to a differeantial or incremental backup against the prev. full backup ?

Example:

[op1@storage1 ~]# stat /mnt/glusterfs/piler/store/00/588/00/45/400000005885d683233125cc00df2ff10045.m
  File: „/mnt/glusterfs/piler/store/00/588/00/45/400000005885d683233125cc00df2ff10045.m“
  Size: 3912            Blocks: 8          IO Block: 131072 reguläre Datei
Device: 17h/23d Inode: 10930643060122436912  Links: 1
Access: (0777/-rwxrwxrwx)  Uid: (  500/backup_master)   Gid: (  500/backup_master)
Access: 2021-05-21 08:31:13.545365435 +0200
Modify: 2017-01-23 11:10:01.744076268 +0100
Change: 2021-05-21 08:31:13.568365427 +0200

Is it Modify or Change ? I think, it is change because glusterfs permanently updates the meta data of the files and so it's impossible to back up ONLY modified files.

Is there a strategy for backing up GlusterFS volumes (FUSE mount) or can I change the criteria of the FD to backup only modified files?

Thanks, Frank

[Spadajspadaj]

https://docs.bareos.org/Configuration/Director.html#fileset-options-resource

Mtime Only

Type:	yes|no

If enabled, tells the Client that the selection of files during Incremental and Differential backups should based only on the st_mtime value in the stat() packet. The default is no which means that the selection of files to be backed up will be based on both the st_mtime and the st_ctime values. In general, it is not recommended to use this option.

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[Andreas Rogge]

Am 21.05.21 um 08:56 schrieb 'Frank Cherry' via bareos-users:

> Is it Modify or Change ? I think, it is change because glusterfs
> permanently updates the meta data of the files and so it's impossible to
> back up ONLY modified files.
>
> Is there a strategy for backing up GlusterFS volumes (FUSE mount) or can
> I change the criteria of the FD to backup only modified files?

If you need efficient incremental backups for a glusterfs volume, there
is a glusterfs plugin for the fd that you may want to take a look at:
https://docs.bareos.org/TasksAndConcepts/Plugins.html#glusterfs-plugin

Best Regards,
Andreas
--
Andreas Rogge andrea...@bareos.com
Bareos GmbH & Co. KG Phone: +49 221-630693-86
http://www.bareos.com

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