Networker

[Networker] NDMP backups

2010-07-07 00:37:00
Subject: [Networker] NDMP backups
From: n_ashwin <networker-forum AT BACKUPCENTRAL DOT COM>
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Date: Wed, 7 Jul 2010 00:34:57 -0400
As I understand, NDMP through tar does not understand incrementals since the 
file inclusion for backups happen based on ctime attribute which keeps 
changing. So an incremental is as good as a full. However, in Netapp if we 
enable the IGNORE-CTIME directive, we should be able to take incremental 
backups. Flip side is that a change in meta data of files eg ACLs are not 
captured.

NDMP through DUMP supports incremental [in the form of level backups] but it 
reads all the blocks associated with the modified files rather than files 
themselves. This is so since DUMP works at the inode level

Is this correct ?

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