"Dan Langille" <dan AT langille DOT org> kirjoitti viestissä 
news:48B96BA1.4010300 AT langille DOT org...
> Timo Neuvonen wrote:
>>>> I have a couple of users which sporadically edit video files.
>>>>
>>>> These files can take several hundred megabytes and are also subject to
>>>> backup.
>>>>
>>>> The thing is, users often move these files, i.e. from directory A to
>>>> directory B. And copy to directory C two days later. The next day, they
>>>> change files name from movie_a.avi to new_commercial.avi.
>>>>
>>>> All these file renames/copying/moving make a big problem for our 
>>>> current
>>>> backup setup - the files are transferred again and again over slow
>>>> Internet, although files didn't change and their checksums are still 
>>>> the
>>>> same.
>>>>
>>>>
>>>> Can Bacula deal with file renames, copying (their time stamp can
>>>> differ), moving etc.?
>>> Bacula will backup everything in a Full backup.
>>>
>>> For the next Incremental or Differential, it uses mtime.  That is, the
>>> last time the file was modified.  If the mtime has not changed, the file
>>> will not be backed up, regardless of name.
>>>
>>> So, for your example: if the file is copied, mtime [usually] changes.
>>> So it will be included in the next inc/diff backup.  Renaming a file
>>> does not change mtime.  Therefore the renamed file will not be included
>>> in the next inc/diff backup.
>>>
>> Just out of curiosity: what information Bacula uses to recognize a 
>> renamed
>> file, in addition to mtime?
>
> I am not sure what you mean by "recognize".  Bacula does do anything
> like that (here I am giving you an answer based on not knowing what you
> mean).
>
Sorry about that stupid question, maybe a fuse had blown in my brains :-)
I should have made a second thought before my previous posting.
I was thinking in a way if the name changes, how would Bacula find out the 
details of the previous backups of that file from the catalog. But of 
course, mtime alone is enough to expect that file should already have been 
backed up sometimes, and it won't be searced from the catalog at all.

--
TiN 



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