Re: Strategies for backup of millions of files...

Josip Deanovic via Bacula-users <[email protected]>
Newsgroups gmane.comp.bacula.user
Message-ID <[email protected]>
On 2024-10-01 03:16, Dan Langille wrote:
> On Mon, Sep 30, 2024, at 10:48 AM, Marco Gaiarin wrote:
>> Mandi! Dan Langille
>>   In chel di` si favelave...
>> 
>>> From 
>>> https://dan.langille.org/2023/12/24/backing-up-freebsd-with-bacula-via-zfs-snapshot/ 
>>> :
>> 
>> I'm still doing some experimentation on this, indeed.
>> 
>> 
>>> It doesn't all run as incrementals. If the list of DATASETS (see 
>>> above URL) does not change, the fileset does not change.
>> 
>> OK, but if mountpoint change, so change root path, so... how can 
>> bacula do
>> incrementals, if all path are different?!
>> 
>> So.
>> I can use script for the list of path to backup; i can use 'Ignore
>> FileSet Changes = yes'
>> (but if i use script i think it is not needed...) but how can bacula 
>> do
>> incrementals?
> 
> Bacula will just do it.  Nothing special required.

This statement might be misleading in this particular case Marco
described.

Bacula will be able to run incremental backup but if the mountpoint is
changing every time backup is running, the content of the mountpoint
directory would be fully copied over and over again, thus, taking more
space compared to the incremental backup of the same directory.

As I said in some post, it might be avoided by using bind-mount option
of the mount(8).


Regards!

-- 
Josip Deanovic
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