Dan Langille schrieb:
> Tomasz Chmielewski wrote:
>> Dan Langille schrieb:
>>
>> (...)
>>
>>> Bacula will backup everything in a Full backup.
>>
>> Hmm, does "Bacula will backup everything in a Full backup" mean "it 
>> will transfer *everything* over network, even if the same files in the 
>> same location were in the previous full backup?
> 
> Yes.

That's a bit unfortunate for those doing backups over the Internet, 
isn't it?


>>> 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.
>>>
>>> Referring to another post of yours: the "accurate restore" mentioned 
>>> by Frank will still continue to backup files that are identical.  
>>> That is, if you have 10 files that contain identical content, all ten 
>>> will be backed up.
>>
>> Yes, I also expect to find all these files in backup.
>> The problem is, I don't want to transfer all these files again and 
>> again if the same file is already in the pool.
> 
> A full backup, by definition, backs up all files.

Of course, but a smart approach (i.e. similar to what rsync does) would 
result in faster backups: only transfer new/changed files, even when you 
make a full backup.
This way, you can do full backups every day and they are as fast as 
incremental backups.


-- 
Tomasz Chmielewski
http://wpkg.org


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