On Thursday 14 May 2009 14:07:47 Dan Langille wrote: > I was contacted off-list last night regarding systems where the GID/UID > of the backed up file does not exist when restoring. > > The backup was performed on a system that contained GID/UID entries that > did not exist on the new server. The user reported an issue involving > unexpected chown settings on the restored file set. Specifically, many > files were chown root:wheel where he expected them to be something from > the missing GID/UID values. He has since solved this issue by adding > the missing values to the system and performing the restore again. > > I have not looked at the code. But I see the above characteristics as > the best result. > > My thoughts indicate we have two options in this situation: > > 1 - store GID/UID numeric values, but if those numbers mapped to a > different group/user on restore, that's bad, Very bad.
We do the above. I think this is documented in the manual to possibly create problems if you move files from one system to another. It is worse if you move it from one OS type to a totally different one as all the bits in the mode word of the stat packet are not guaranteed to be the same and that *could* possibly create some problems for certain file types. > > 2 - store GID/UID names, so we Do The Right Thing(tm) when restoring. > If the GID/UID is not found, use root defaults (in this case, root:wheel). > > From the scenario described, I think we do option 2 at present. No, we do not save names. I think we do the same thing that tar and most other program do -- simply create the file with the original UID/GID. If tar does something different, I would like to know what they do. Regards, Kern > > I could not find this point documented anywhere. I'll write something > up about it unless someone points me to existing material. ------------------------------------------------------------------------------ The NEW KODAK i700 Series Scanners deliver under ANY circumstances! Your production scanning environment may not be a perfect world - but thanks to Kodak, there's a perfect scanner to get the job done! With the NEW KODAK i700 Series Scanner you'll get full speed at 300 dpi even with all image processing features enabled. http://p.sf.net/sfu/kodak-com _______________________________________________ Bacula-devel mailing list Bacula-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-devel
