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Docker high image disk utilization and Scrub

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Every time I update some of my docker containers I get the "Docker high image disk utilization" message.  Over time this seems to be increasing and now has reached 80% with recent Docker updates.  If I look at the container size from the Docker page/tab I see this:

 

Name                                            Container                Writable                 Log
onlyofficedocumentserver                        3.60 GB                  353 MB                   476 kB
binhex-krusader                                 2.68 GB                  0 B                      36.1 MB
freepbx                                         2.07 GB                  32.0 MB                  36.1 kB
nextcloud                                       1.12 GB                  239 MB                   7 kB
guacamole                                       781 MB                   45.9 MB                  16.0 kB
swag                                            636 MB                   154 MB                   16.6 kB
plex                                            340 MB                   21.5 kB                  3.70 kB
mariadb                                         306 MB                   23.4 kB                  5.45 kB
adminer                                         250 MB                   0 B                      36.1 MB
vaultwarden                                     214 MB                   0 B                      17.8 kB
heimdall                                        182 MB                   51.5 MB                  6.12 kB
nginx                                           147 MB                   25.2 kB                  5.90 kB
Total size                                      12.3 GB                  875 MB                   72.7 MB 

 

If I then look at the Settings page I see this:

Docker volume info
btrfs filesystem show:
Label: none  uuid:        "ID Removed"
    Total devices 1 FS bytes used 20.21GiB
    devid    1 size 30.00GiB used 25.52GiB path /dev/loop2

btrfs scrub status:
UUID:             "ID Removed"
    no stats available
Total to scrub:   20.63GiB
Rate:             0.00B/s
Error summary:    no errors found

 

SInce total to Scrub is 20.63 GiB, should I do this and will is reduce the size?  I looked but could not find details on the Scrub button.  Also, if this is not a solution, thoughts on what might be the issue here?

 

  • 2 months later...

Same issue here.  Did you ever get this figured out?  Right now that's a scary button.

 

  • 1 year later...

I am also wondering the same thing.

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