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<div class="moz-cite-prefix">Le 12/09/2017 à 14:00, Thomas Waldmann
a écrit :<br>
</div>
<blockquote type="cite"
cite="mid:493ebc71-8b04-3e17-086a-cd08203e01ac@waldmann-edv.de">
<blockquote type="cite">
<pre wrap="">why the size have changed ?
</pre>
</blockquote>
<pre wrap="">
Because the deduplicated size (== size of all chunks ONLY used by this 1
archive) is relative to the state of the whole repository.
So if you put these files into these archives (nothing else in that
repo, A, B, C have no duplicate chunks):
A -> archive1
A B -> archive2
A B C -> archive3
After creating archive2, the new chunks from B will show up as unique
chunks of archive2 (because they are not referenced by archive1).
But after you create archive3, the chunks from B will be referenced
twice (by archive2 and 3), thus they are not uniquely referenced by
archive2 any more.
</pre>
</blockquote>
ok I have "almost" understood, <br>
<br>
so the size returned by <i><b>"borg info"</b></i> displays the
stats of the deduplicated size (unique fragments)<br>
of one archive as compared to all the fragments in the whole
repository ?<br>
so it's a relative proportion of the unique fragments of one archive
, which can evolve in the time when<br>
new archives are added in the repository ?<br>
<br>
After a great reflexion :-) this is very confusing for my mind (and
some friends) because we expected to find<br>
the deduplicated size information as returned by the<i><b> borg
create</b></i> command at the time the backup was made<br>
<br>
that is to say the deduplicated size of one archive at the time it
is made<br>
which is to my opinion more interesting to see the benefit of
deduplication<br>
<br>
exemple <br>
time of "<i><u>borg create</u></i>" (extracted from log file)<br>
<pre>Archive name: bioinfo-2017-09-07<i><b>
</b> Original size Compressed size Deduplicated size
This archive: 6.44 TB 4.02 TB <b> 2.44 GB</b>
All archives: 65.05 TB 41.60 TB 3.96 TB<b>
</b></i></pre>
<br>
time of "<u><i>borg info</i></u>" some weeks later<br>
<pre>Name: bioinfo-2017-09-07
Original size Compressed size Deduplicated size</pre>
<pre>This archive: 6.44 TB 4.02 TB <i><b> 110.13 MB</b></i>
All archives: 66.26 TB 41.89 TB 4.29 TB</pre>
<br>
some weeks later we lose this information which shows that the day
of the archive (09-07),<br>
borg added 2.44Gb of new fragments in the repository<br>
<br>
<br>
we only know that in the 09-07 archive there are 110.13 Mb of unique
fragments from this archive in the whole repository<br>
<br>
dont know if i am clear (difficult to conceptualize and translate in
english)<br>
<br>
your opinion ? <br>
<br>
ML<br>
<br>
<br>
<pre class="moz-signature" cols="72">--
M. LIBES
Service Informatique OSU Pytheas - UMS 3470 CNRS
Batiment Oceanomed
Campus de Luminy
13288 Marseille cedex 9
Tel: 04860 90529 </pre>
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