> 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 ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
