disegno Posted March 5, 2014 Report Share Posted March 5, 2014 With the new Block Level Incremental Backups in v.11 will changing permissions on a file still cause a full backup of that file? ie. we have shares on our server, and changing permissions / access controls on a share (and propagating permissions) causes a full backup of all files (5TB). At the moment we only adjust share points when we know we're ready to do a complete tape recycle backup set. Christiaan Quote Link to comment Share on other sites More sharing options...
Mayoff Posted March 6, 2014 Report Share Posted March 6, 2014 Block level incremental backup is designed to only back up the changed blocks of a file. I don't think changing the permissions will change all of the file blocks. This article may also be helpful with your situation: Retrospect wants to re-copy unchanged files during a backup Quote Link to comment Share on other sites More sharing options...
disegno Posted March 6, 2014 Author Report Share Posted March 6, 2014 OK, thanks will test a permissions change with the "Use attribute modification date when matching." un-checked tomorrow. Quote Link to comment Share on other sites More sharing options...
disegno Posted March 6, 2014 Author Report Share Posted March 6, 2014 Thanks - this has solved our issue with permission changes and backups - but what exactly does this setting exclude from backups? Quote Link to comment Share on other sites More sharing options...
chiggins Posted July 3, 2014 Report Share Posted July 3, 2014 Disengo Group: From page 117 of the manual on Use attribute modification date when matching checkbox: "Retrospect uses the attribute modification date to identify and copy files for which only the extended attributes or ACLs are different. For example, if you are backing up a file that was backed up previously and you modify the ACLs on that file (but make no other changes to it), the only way for Retrospect to know that the file is different (and therefore should be backed up again) is by looking at the attribute modification date." Basically if you have this box checked and change permissions it will back it up again (this what was happening to you). Unchecked and it will only backup when the file is modified/changed (ie: the date changes on the file through save overwrite ect). Quote Link to comment Share on other sites More sharing options...
roobieroo Posted August 8, 2014 Report Share Posted August 8, 2014 Thanks - this has solved our issue with permission changes and backups - but what exactly does this setting exclude from backups? So are you saying that using incremental backups still caused the entire file to be backed up again when you modified the ACL permissions or did you not try your test? Quote Link to comment Share on other sites More sharing options...
disegno Posted August 10, 2014 Author Report Share Posted August 10, 2014 No, as I said, this solved our issue – ACL permission changes no longer affect the incremental backups. Quote Link to comment Share on other sites More sharing options...
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