In addition some information from the log files of the two servers:
fileserver (active server reporting the wrong Pool size):
   2026-06-10 02:04:24 Pool nightly clean removed 0 files of size 0.00GB
   2026-06-10 02:04:24 Pool is 0.00GB, 0 files (0 repeated, 0 max chain, 0 max 
links), 1 directories
   2026-06-10 02:04:24 Cpool nightly clean removed 0 files of size 0.00GB
   2026-06-10 02:04:24 Cpool is 0.00GB, 0 files (0 repeated, 0 max chain, 0 max 
links), 1 directories
   2026-06-10 02:04:24 Pool4 nightly clean removed 15278 files of size 7.84GB
   2026-06-10 02:04:24 Pool4 is 1817.21GB, 29865196 files (0 repeated, 0 max 
chain, 154407 max links), 16512 directories
   2026-06-10 02:04:24 Cpool4 nightly clean removed 0 files of size 0.00GB
   2026-06-10 02:04:24 Cpool4 is 0.00GB, 0 files (0 repeated, 0 max chain, 0 
max links), 2889 directories
   2026-06-10 02:04:24 Running BackupPC_rrdUpdate (pid=3246666)
   2026-06-10 02:04:25  admin-1 : RRD updated: date 1781136000; cpoolKb 
0.000000; total 84065619218.785156; poolKb 0.000000; pool4Kb 1860817956.000000; 
cpool4Kb 0.000000
   2026-06-10 02:04:25 Finished  admin-1  (BackupPC_rrdUpdate)

pFileserver (standby server reporting the correct Pool size):
   2026-05-08 02:13:32 Pool nightly clean removed 0 files of size 0.00GB
   2026-05-08 02:13:32 Pool is 0.00GB, 0 files (0 repeated, 0 max chain, 0 max 
links), 4369 directories
   2026-05-08 02:13:32 Cpool nightly clean removed 0 files of size 0.00GB
   2026-05-08 02:13:32 Cpool is 0.00GB, 0 files (0 repeated, 0 max chain, 0 max 
links), 4369 directories
   2026-05-08 02:13:32 Pool4 nightly clean removed 50547 files of size 16.46GB
   2026-05-08 02:13:32 Pool4 is 8532.67GB, 27774636 files (0 repeated, 0 max 
chain, 151435 max links), 15480 directories
   2026-05-08 02:13:32 Cpool4 nightly clean removed 0 files of size 0.00GB
   2026-05-08 02:13:32 Cpool4 is 0.00GB, 0 files (0 repeated, 0 max chain, 0 
max links), 2692 directories
   2026-05-08 02:13:32 Running BackupPC_rrdUpdate (pid=238053)
   2026-05-08 02:13:33  admin-1 : RRD updated: date 1778284800; cpoolKb 
0.000000; total 80608078479.056641; poolKb 0.000000; pool4Kb 8737452716.000000; 
cpool4Kb 0.000000
   2026-05-08 02:13:33 Finished  admin-1  (BackupPC_rrdUpdate)

br
Matthias

Am Mittwoch, dem 10.06.2026 um 08:10 +0200 schrieb [email protected]:
> Hello :)
> 
> Attached you will find the status page as .html.
> According to my graphs I have:
> Pool V3 = 0,00
> Cool V3 = 0,00
> Pool V4 = 1,73 TB
> Cool V4 = 0,00
> Prior to pooling and compression 78,29 TB. That sounds realistic to me.
> 
> I installed backuppc on another server and copied configuration as well as 
> rrd from the old
> server.
>    ls -lh /var/log/backuppc/*.rrd
>    -rw-r----- 1 backuppc backuppc 12K  7. Mai 13:25 /var/log/backuppc/pool.rrd
>    -rw-r--r-- 1 backuppc backuppc 31K 10. Jun 02:04 
> /var/log/backuppc/poolUsage.rrd
> 
> Thank you for your support
> Matthias
> 
> Am Donnerstag, dem 04.06.2026 um 16:41 +0100 schrieb G.W. Haywood:
> > Hi there,
> > 
> > On Wed, 3 Jun 2026, Matthias@... wrote:
> > 
> > > In my BackupPC, the rrdtool doesn't seem to be properly integrated.
> > > It shows a pool size of 1.4 TB. However, there are 7.7 TB on the
> > > disk in /var/lib/backuppc/pool.
> > >   du -xh --max-depth=0 /var/lib/backuppc/pool
> > >   7,7T    /var/lib/backuppc/pool
> > 
> > According to your graphs you have about the right amount of data in
> > 'cpool' and you are no longer using 'pool' - presumably because you
> > changed from an uncompressed to a compressed pool.  You will need to
> > remove the content of 'pool' manually if you no longer need it.
> > 
> > > It also shows 100TB as total capacity but I'm poor, have only 10TB ??
> > 
> > The largest value on the graph's vertical axis doesn't show you how
> > much space you have on the pool filesystem.  RRDtool scales the graph
> > to accommodate the red line, which shows the total amount of all the
> > data backed up on all the clients *before* pooling and compression.
> > To me it looks correct.
> > 
> > > In addition it is shown twice in the backuppc homepage (see attachment).
> > > 
> > > I'm running Debian 11 with Backuppc 4.4.0-3 and rrdtool 1.7.2-3+b7
> > 
> > I don't know what you've done to deserve that.  It may take a little
> > sleuthing.  In the first instance perhaps you can save the status page
> > as an html file and let us see that?  There might be clues within.
> > 
> 




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