> Hello List
> 
> i recently read about the NTFS change journal and its aim to support backups
> in finding files for incremental backups. Are there any plans to maybe include
> such a feature in the windows client? I suspect this would be really helpful 
> on
> bigger sized filesystems with a lot of files. Information about the NTFS
> feature can for example found here:
> http://msdn.microsoft.com/en-us/library/aa363798.aspx
> 

I've implemented this in an unsubmitted patch. The problems I found are:

. takes a bit of memory to hold the data
. it doesn't completely solve the accurate problem for any 'since' date unless 
you keep the complete log in memory rather than 'this file has changed' 
(although it would in the regular since-last-backup case)
. bacula really needs to store the FRN in the catalog, which takes extra space

Another idea I had was to cross reference the MFT vs the accurate file 
information. Enumerating the MFT isn't particularly quick, but it is orders of 
magnitude faster than actually traversing the entire filesystem looking for 
changes. If Bacula recorded the FRN and the last USN then a "is file changes?" 
would be straightforward.

I can send the patch (against 5.2.0 I think) if you would like to use it as a 
starting point.

James


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