[Akonadi] [Bug 487090] New: Temporary huge increase is size of ~/.local/share/akonadi

[Fab Stz]

https://bugs.kde.org/show_bug.cgi?id=487090

            Bug ID: 487090
           Summary: Temporary huge increase is size of
                    ~/.local/share/akonadi
    Classification: Frameworks and Libraries
           Product: Akonadi
           Version: unspecified
          Platform: Other
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: kdepim-bugs at kde.org
          Reporter: fabstz-it at yahoo.fr
                CC: carl at carlschwan.eu
  Target Milestone: ---

My /home folder is on a partition with limited disk size. Usual free space is
about 1GB.

I noticed that at times the remaining disk space is completely filled up
leading to "no more diskspace" which in the end results in akonadi crashing
(and all apps having weird issues).

I could find that the cause if actually akonadi which at times increases much
is size, especially the folder: ~/.local/share/akonadi (backend is
MySQL/MariaDB)

So I moved the folder to another partition with a lot of free space and by
monitoring the size of the folder I have the outcome below. As you can see size
is can go from the usual 1GB to 3.7GB for a short period of time.

Expected results are:
- no crash when there is no more free disk space
- avoid akonadi db to require temporarilly so much disk space.

Size evolution in time:
1004M   
1005M   
1004M   
1005M   
1006M   
1005M   
1006M   
1,2G    
1,3G    
995M    
1,3G    
995M    
996M    
997M    
996M    
997M    
985M    
994M    
1,3G    
994M    
1,3G    
1,7G    
2,1G    
2,5G    
2,9G    
3,1G    
3,5G    
3,7G    
1,4G    
1,1G    
1,3G    
1,1G    
948M    
949M    
951M    
953M    
954M    
955M    
954M    
955M    
956M    
957M    
958M    
959M    
960M    
961M    
962M    
963M    
964M    
952M    
1,1G    
1,5G    
1000M   
1001M   
1002M   
1001M   
1002M   
1003M   
1008M   
1003M   
1007M   
1003M   
1004M   
1005M   
1006M   
1009M   
1010M   
1009M   
1010M   
1011M   
1012M   
1011M   
1012M   
1013M   
1014M   
1015M   
1,1G    
1,3G    
1,8G    
2,2G    
2,6G    
3,0G    
3,5G    
3,6G    
3,7G    
3,1G    
2,0G    
1,1G    
1,2G    
1,4G    
1,7G    

Script that permits to produce this list:
```
while true; do
  du -sh /mnt/packages/home_fabien_.local_share_akonadi/ >> ~/tmp/akonadi_size
  uniq ~/tmp/akonadi_size | sponge ~/tmp/akonadi_size
  sleep 45
done
```

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Debian bookworm, 4:22.12.3-1

KDE Plasma Version: 5.27.5
KDE Frameworks Version: 5.103.0
Qt Version: 5.15.8

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