Questions about zfs volumes and networks being created

Hey guys,

I’m learning Docker, reading and watching a lot. For practising purposes, I have installed Docker and and docker-compose on my home server running Arch Linux.

The server is running ZFS from AUR (Arch User Repositories) version 0.7.9-1, kernel 4.16.13-1.

I’ve created a ZVOL for Bitwarden, since it contains MSQL Express that doesn’t run on ZFS and formatted it with EXT4. It is mounted to /data/bitwarden.

A regular ZFS dataset has been created for /var/lib/docker for Unifi and qbittorrent containers.

Docker info shows Storage driver: zfs is in use, parent dataset data/docker.
Logging driver is set to journald.
Last but not least, Docker Server Version: 18.05.0-ce.

Pacman lists docker and docker-compose installed as versions:
community/docker 1:18.05.0-2 [installed]
Pack, ship and run any application as a lightweight container
community/docker-compose 1.21.2-1 [installed]

I totally admit my knowledge is lacking, I’ve been trying to figure this out and read up about what is happening and how this is supposed to work, but I can’t find what is going wrong in my situation.

I hope someone here can help me figure this out and understand what is going on.

I’ve ran docker image/volume/network prune commands. First time it cleared up some left overs from containers I’ve ran but since deleted.

I understand the concept of the overlays, I’m pretty sure the mount list below is good but I included it for completeness sake. I can make no sense of the zfs filesystem list and the network list though. These are my main concerns, why do I have so many filesystems and network interfaces, while the docker volume/image and docker network commands show only what I actually have and use?

Apologies for the complete wall of text below.

Thanks for any help!

docker container ls (truncated):

CONTAINER ID        IMAGE
69720aab78d1        bitwarden/web:1.27.0
6f7a9c225872        bitwarden/mssql:1.20.0
6646826a6d10        bitwarden/icons:1.20.0
7615b7686c2a        bitwarden/admin:1.20.0
74618452f477        bitwarden/identity:1.20.0
9a4d12a941fc        bitwarden/nginx:1.20.0
bc560834cd87        bitwarden/api:1.20.0
ee740c0f1cbf        bitwarden/attachments:1.20.0
97b51fc09114        linuxserver/qbittorrent
afac8a0b0066        linuxserver/unifi:unstable

Docker images. The first 10 of this list are backups, made with docker commit (and docker save to another zfs volume which is backed up to another machine):

REPOSITORY                TAG                 IMAGE ID            CREATED             SIZE
afac8a0b0066              latest              b2d7554deeb2        3 hours ago         608MB
97b51fc09114              latest              fc1cc195842b        3 hours ago         98.5MB
ee740c0f1cbf              latest              86ab0c68eb1f        3 hours ago         338MB
bc560834cd87              latest              507313dfbac9        3 hours ago         509MB
9a4d12a941fc              latest              67b23336d555        3 hours ago         111MB
74618452f477              latest              3c5f2441f08a        3 hours ago         402MB
7615b7686c2a              latest              6f9d494a070c        3 hours ago         372MB
6646826a6d10              latest              e95095d189d8        3 hours ago         339MB
6f7a9c225872              latest              5d809448ce77        3 hours ago         1.44GB
69720aab78d1              latest              fcc6273ee216        3 hours ago         347MB
linuxserver/qbittorrent   latest              34360da82bd6        4 days ago          98.5MB
linuxserver/unifi         unstable            ef2e1fb19d9d        4 days ago          474MB
bitwarden/web             1.27.0              58a90dd0d0bc        5 days ago          337MB
bitwarden/setup           1.20.0              92cf588d9809        5 days ago          227MB
bitwarden/admin           1.20.0              75bdfb65c0bb        5 days ago          349MB
bitwarden/icons           1.20.0              7e428b5e9a08        5 days ago          333MB
bitwarden/identity        1.20.0              2d7a8e6c1d6d        5 days ago          365MB
bitwarden/api             1.20.0              2a6fc370972f        5 days ago          418MB
bitwarden/mssql           1.20.0              00f82eb00bbe        7 days ago          1.43GB
bitwarden/attachments     1.20.0              29d47575712a        7 days ago          333MB
bitwarden/nginx           1.20.0              3a686270aab0        7 days ago          111MB
certbot/certbot           latest              594b76d4a0c8        5 weeks ago         110MB

Docker volume ls lists nothing.

Docker network ls lists the following networks:

NETWORK ID          NAME                DRIVER              SCOPE
272b7f99c341        bridge              bridge              local
34a76006a4f9        docker_default      bridge              local
10055c6aa5f6        host                host                local
664d4919fecf        none                null                local

$ip a command lists network interfaces:

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: eno1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
local network interface removed
3: virbr0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default qlen 1000
    link/ether 52:54:00:42:20:dd brd ff:ff:ff:ff:ff:ff
    inet 10.26.14.1/24 brd 10.26.14.255 scope global virbr0
       valid_lft forever preferred_lft forever
4: virbr0-nic: <BROADCAST,MULTICAST> mtu 1500 qdisc fq_codel master virbr0 state DOWN group default qlen 1000
    link/ether 52:54:00:42:20:dd brd ff:ff:ff:ff:ff:ff
5: docker0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether 02:42:ed:6e:80:26 brd ff:ff:ff:ff:ff:ff
    inet 172.17.0.1/16 brd 172.17.255.255 scope global docker0
       valid_lft forever preferred_lft forever
    inet6 fe80::42:edff:fe6e:8026/64 scope link
       valid_lft forever preferred_lft forever
17: vethf02ed8c@if16: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master docker0 state UP group default
    link/ether a2:b7:d7:37:ee:1b brd ff:ff:ff:ff:ff:ff link-netnsid 0
    inet6 fe80::a0b7:d7ff:fe37:ee1b/64 scope link
       valid_lft forever preferred_lft forever
23: veth5a20651@if22: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master docker0 state UP group default
    link/ether aa:d6:ab:28:3c:fe brd ff:ff:ff:ff:ff:ff link-netnsid 1
    inet6 fe80::a8d6:abff:fe28:3cfe/64 scope link
       valid_lft forever preferred_lft forever
161: br-34a76006a4f9: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether 02:42:1f:46:4d:22 brd ff:ff:ff:ff:ff:ff
    inet 172.18.0.1/16 brd 172.18.255.255 scope global br-34a76006a4f9
       valid_lft forever preferred_lft forever
    inet6 fe80::42:1fff:fe46:4d22/64 scope link
       valid_lft forever preferred_lft forever
163: veth84ee3f8@if162: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master br-34a76006a4f9 state UP group default
    link/ether 3e:ca:22:12:df:e2 brd ff:ff:ff:ff:ff:ff link-netnsid 2
    inet6 fe80::3cca:22ff:fe12:dfe2/64 scope link
       valid_lft forever preferred_lft forever
165: vethc65106e@if164: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master br-34a76006a4f9 state UP group default
    link/ether be:30:9c:22:46:31 brd ff:ff:ff:ff:ff:ff link-netnsid 3
    inet6 fe80::bc30:9cff:fe22:4631/64 scope link
       valid_lft forever preferred_lft forever
169: veth40be19f@if168: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master br-34a76006a4f9 state UP group default
    link/ether b6:4f:ba:66:ef:85 brd ff:ff:ff:ff:ff:ff link-netnsid 4
    inet6 fe80::b44f:baff:fe66:ef85/64 scope link
       valid_lft forever preferred_lft forever
173: vethc3a082f@if172: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master br-34a76006a4f9 state UP group default
    link/ether 9e:25:69:a3:d8:52 brd ff:ff:ff:ff:ff:ff link-netnsid 7
    inet6 fe80::9c25:69ff:fea3:d852/64 scope link
       valid_lft forever preferred_lft forever
177: veth39f245f@if176: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master br-34a76006a4f9 state UP group default
    link/ether 02:7c:78:ad:27:24 brd ff:ff:ff:ff:ff:ff link-netnsid 9
    inet6 fe80::7c:78ff:fead:2724/64 scope link
       valid_lft forever preferred_lft forever
181: veth789bab5@if180: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master br-34a76006a4f9 state UP group default
    link/ether f2:98:88:ad:57:36 brd ff:ff:ff:ff:ff:ff link-netnsid 8
    inet6 fe80::f098:88ff:fead:5736/64 scope link
       valid_lft forever preferred_lft forever
183: veth8954295@if182: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master br-34a76006a4f9 state UP group default
    link/ether ce:39:60:86:15:5c brd ff:ff:ff:ff:ff:ff link-netnsid 10
    inet6 fe80::cc39:60ff:fe86:155c/64 scope link
       valid_lft forever preferred_lft forever
185: vethd4020e2@if184: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master br-34a76006a4f9 state UP group default
    link/ether 4e:66:c3:92:d8:23 brd ff:ff:ff:ff:ff:ff link-netnsid 11
    inet6 fe80::4c66:c3ff:fe92:d823/64 scope link
       valid_lft forever preferred_lft forever

zfs list -t snapshots (filesystems lists the same list without the ending @xxxxxxx):

data/docker/062587133cc3795f404ed1d9cebe30f2c4df55c684f6ef0529efdd622dad4dd9@807837110       95.9K      -  31.1M  -
data/docker/0707c1fad7068df631efd783d55bc3f1f73a3e6d75b4da31ed43d9e90e858ef3-init@245530850   192K      -   311M  -
data/docker/0938cae664ffe8aa343944e385aafa3ddcd5b9f50b859f3d2640e97fd44b922e-init@331828135   139K      -  72.6M  -
data/docker/0b6fd684ecc42f468ac0f8341c3a3452c111b461529de4c73f73a1b0dbc5140c@722527069        107K      -  82.0M  -
data/docker/0b96abd22f1b96562348854bf23787cc006987886e9b79db1a4deba8ce827078@247975778       95.9K      -  80.5M  -
data/docker/0b96abd22f1b96562348854bf23787cc006987886e9b79db1a4deba8ce827078@762640802       85.2K      -  80.5M  -
data/docker/0e27118472e9c5b92614eda9b43ba00c47ea3024128b1b2ea0ca6ce7f7bff898@414687783        128K      -   290M  -
data/docker/0e9134ee7b390bd1467bd06fdf619bfc8c6a1eecd264efc54bbf1ddcb9bc58d8@787639520       95.9K      -  80.5M  -
data/docker/12985f74b31a36860cb6104c5e32cb9eaddddc012c744feb7f8db1b2552874e4@982425874        107K      -   631M  -
data/docker/12985f74b31a36860cb6104c5e32cb9eaddddc012c744feb7f8db1b2552874e4@564221105       95.9K      -   631M  -
data/docker/163b27c05cd9e8b03cba7c61da31d8afeda705783ebd1372ac372b40eb33487f@506883911        128K      -   311M  -
data/docker/163b27c05cd9e8b03cba7c61da31d8afeda705783ebd1372ac372b40eb33487f@917214169       95.9K      -   311M  -
data/docker/173d8ad453c73fce36f8ea3c026b422d76238ac721e240a0afc0619d93162629-init@508546      170K      -   231M  -
data/docker/19e2b50a3a32639b216bb2e502798f85801cf10155462a3b37d07dfd3ca54fb3-init@682668293   160K      -  80.5M  -
data/docker/1fb2ed87963fae04eb35c82b7eccbd2cfb754efbd8c7a5faf7554629a23140c0@551048721       95.9K      -  73.5M  -
data/docker/21ba7885ceffe38e22a33265a803e8a27e7d96205f7103872c26b9bc9db9786e@509605990        107K      -  80.7M  -
data/docker/227d91f2e2ee6ebd44389282c0c7300199d07d3de1559ee62aff736e1fb3c4f3@832960367          0B      -   231M  -
data/docker/227d91f2e2ee6ebd44389282c0c7300199d07d3de1559ee62aff736e1fb3c4f3@490011938          0B      -   231M  -
data/docker/22caf3d40d57bfa215c2a366fb754a9225b90682f820a67e9288460ed743069c@513113708        128K      -   120M  -
data/docker/230c47f5fbfd47d6505da1741abd968a2a375d95e214619fff1d6e437c9fcb34@648265685       1.37M      -  47.4M  -
data/docker/246d48a13020eb2844fa61724898950d73a4cb6fd995e650bfbeba3b9423fb1b@417797197          0B      -  86.3M  -
data/docker/246d48a13020eb2844fa61724898950d73a4cb6fd995e650bfbeba3b9423fb1b@806273646          0B      -  86.3M  -
data/docker/29cb8590bfd87b9916324ecace48cbb892fcb4f6e9740fe850d303befe2bc679@304824858          0B      -   228M  -
data/docker/29cb8590bfd87b9916324ecace48cbb892fcb4f6e9740fe850d303befe2bc679@44068548           0B      -   228M  -
data/docker/29cb8590bfd87b9916324ecace48cbb892fcb4f6e9740fe850d303befe2bc679@792816640          0B      -   228M  -
data/docker/2da9289c5ec9ec2d625350b66c92ba0a029a6bbd04aa3351bd7eef5d89a4e0da@540449537        128K      -   290M  -
data/docker/2da9289c5ec9ec2d625350b66c92ba0a029a6bbd04aa3351bd7eef5d89a4e0da@655593937       95.9K      -   290M  -
data/docker/2f133eaff417608af56a78cd82e0b5e0cb1988cc3df401c0581e82969cf62988@74749133           0B      -   159M  -
data/docker/314aef0d80fce2df26a6e78f44b0caa98f8722c477d736fa95a2063221c9705e-init@538425195   149K      -   631M  -
data/docker/31794df552594e21a2fab942add3cb752533bde117836f305c2e6b30faf382d5@788937502        107K      -  80.7M  -
data/docker/3702a43a3f041b589cc1837224cbcb11aae187021a97290251590cf4b0e9179d@697662024       95.9K      -   228M  -
data/docker/38393074c46c223132b6c92de344ed7650ccebab610fc4d320129840acad22bd@30916869         224K      -   234M  -
data/docker/39977b0c840e1b92b0215f95e5ae0ea3c9f7bca8d1f6497aceacbdfe0b520e4f@72877594         107K      -   631M  -
data/docker/3af654d1b4ba1077dc40aeff44db1a3b86d078b9de084bee7a68c7e31f445c45@889250967        202K      -   159M  -
data/docker/3b5a9f775d6a7557fad3cc3b5748e49520acadf581730ce5bfda2f42fd5ce6d2@674067161       1023K      -   311M  -
data/docker/3ba8a8d851769422c65559501b95d49636a50cdec64b1a761c7a5539fcd2d142@583353661        128K      -   290M  -
data/docker/3ff7fa62e5c19177adb93dd9687e158f578e8cae819b40fbea7abbd80c50c4c8@774930488          0B      -  67.2M  -
data/docker/465ceeb686b0dea2e959a010216899ab0aae0e6e6999472341015461f3044872@862524001        277K      -   290M  -
data/docker/4a2f6aa0fa96955e1df0a5c14abcfa3bebfa9da677e635a945c70d859c6e93c0@75263060           0B      -  4.84M  -
data/docker/4ba4107c23a08e64b0e52670d0c637dcda8c0ca2e61f2aaae6d62230d10e9056@771213676        128K      -   234M  -
data/docker/4ba4107c23a08e64b0e52670d0c637dcda8c0ca2e61f2aaae6d62230d10e9056@103055978       95.9K      -   234M  -
data/docker/4c63b5aef7e45e10717b8b043a42997bc4684a1f21616ff47acfa3a3e783f0e0@220682073       95.9K      -  80.7M  -
data/docker/4f0e1283f6cedf13f595f733661fc7121e30081048c36eb4d3cb4139290e19ae@786169706       85.2K      -  79.6M  -
data/docker/52d0c505c4eabcb1a50a92945c64fb94728a27b14a09b526ab591f7bc4e3db5a@39272832         170K      -   241M  -
data/docker/57183afc0b008400e31a9526c2b0b52545291c6ebb8e79d28e51d410fa4f2ab7@968044561       95.9K      -  80.5M  -
data/docker/575039b1e478b6609d4cfd068040d549dd04a89f38fe7ba4ec00b55531d32d64@826365942        149K      -  80.5M  -
data/docker/5763b56ac3478ba5f0afb7cf944f4fc622040051082bda661e6d5121a37e3510@446531693          0B      -  59.1M  -
data/docker/5b5c385ef4675e7f43efe968becc97db05dc487ca3cf962d77df39645a961f5c@876388146        128K      -   251M  -
data/docker/5bd057ce7586b907f244cf3cf265c96a8f87e54f23c0c20beaa8e4ee2b139368@501653423        405K      -   120M  -
data/docker/5c7e6ef1d0c9c2be9b0b9f55433814db93c4788858fa79b0ba6ccea45709b585@751783876        117K      -   241M  -
data/docker/5d2e2efda98e0e9764539aa123af648aedc62fe7e637518b98117d74ea7261a5@333529065        107K      -  73.5M  -
data/docker/5ea3db70dd2ebe7efba189d7a6d54251b7832885e570f39b8ee58d2d7bbe3f9d@921282792       1.24M      -  31.1M  -
data/docker/63de6adcac47f42ca9ab7ff692a1caef2ade34e9d18d39cf651577f2677ff6b4-init@55506089    192K      -   290M  -
data/docker/66403e63e8ca9ca861440bf51f9ebc0d38700aa20ec2faf05bf3e46eda958d14@187176351          0B      -   159M  -
data/docker/684db34bc1f697a4b3bb862234f1df08a20c0cc082bea7c5b46e88a9833cf315-init@546410847   170K      -   241M  -
data/docker/688150e15208adffc79fb4a4292c6759e54b1aa741c397ca81c56a10f7a00cb3@865552698        181K      -   232M  -
data/docker/6cfd062d581a167cc5a02d702ba3d8f1c0285d69476d5c2e32daef47519dfb51@179304759        107K      -  73.5M  -
data/docker/6fa5dfae348d37100175d74a2c91470b22058c6e8a8642749199ccb8674813be@551311007       95.9K      -   184M  -
data/docker/6ffc94b091527eede3ba6cde28400bbd71e80dc3be3e0b28e7232bd03a4641ae@981888251        117K      -   105M  -
data/docker/7070da5ac8dde3d173bf7ee53803d7d884f84cb00f9e3704adc79c8d3b87dfe3@781422259        128K      -   251M  -
data/docker/7070da5ac8dde3d173bf7ee53803d7d884f84cb00f9e3704adc79c8d3b87dfe3@319390800       95.9K      -   251M  -
data/docker/70c39f00bb1fc7ca204cf109004bf31f0fe04683b012e0ce1488416a9e5183d8@535370309          0B      -  59.1M  -
data/docker/71fb6250e2446b0a6c539ee1bd9f7145146fbc86d95a3132f0f0633f01638d64@395637011          0B      -   120M  -
data/docker/7b501b2e682b7ce9048a37c451bbcfd76fd39bf6588b023f1f528d5457615c3d@386622023        266K      -   251M  -
data/docker/8222c0c6a2c09f26506c4d33dd614355e61b6ac31989175ba7b0f77b3aafc9dd@594810240        107K      -   631M  -
data/docker/828c6e78a725abba55fe035d5bc2426aa295748ddf792afd7b9acc22c8474f08@144017108        117K      -   231M  -
data/docker/828c6e78a725abba55fe035d5bc2426aa295748ddf792afd7b9acc22c8474f08@834925209       95.9K      -   231M  -
data/docker/837c4dbd46050273ef20466165e8e6a3a7f7b88b659ddc3bee252c417a8a3d15@89875665           0B      -   163M  -
data/docker/857182e7f698d1a2b95d41882c4766c5e3a80141185547f1f9222cd6c6d9b71f@118577929        170K      -   631M  -
data/docker/862c000345e5768cea4327b070f3fc56a8931a7674d1ed12539210bee7163187@894660271       95.9K      -  80.5M  -
data/docker/8aadaf6a284582d66ebf8f18971559b8d8f059adb85941b740b396831e210217-init@513528175   181K      -   251M  -
data/docker/8c0d58d84475360d9d813bf04ade3e75f968e4c8cae186d2cf51e5e8188f62d4@575641924       1.23M      -   184M  -
data/docker/90b51dbd7f3fc72d3640885f63954cc4b7301527c3ea3f403d2dec0ee88b8740@568913058        117K      -  88.3M  -
data/docker/928cd2014b18ecdcc1204d35d418531cfedbd1edd83bc73bc342c66119d6654d@5517448          192K      -   230M  -
data/docker/92e74e35116e89934caaf4dd4bb9746aeea1dd3b8cd95d55dbed20d42c1da9cb@992815467       2.51M      -   630M  -
data/docker/98103638e99347cfa5413d11b7d58745fc831c73626228a457b857ef99bdf56b@955893291        266K      -   267M  -
data/docker/9a1f40136092d89b6211ed9529a4d1c20e7786120ca4944c0111fe5e564c9c9c@888780242        117K      -   232M  -
data/docker/9a1f40136092d89b6211ed9529a4d1c20e7786120ca4944c0111fe5e564c9c9c@997314542       95.9K      -   232M  -
data/docker/a037de1ae93c43370029427523a61b7bd6ad86a3bed6ae5d92cfe88e9f64d548@424407114        117K      -   241M  -
data/docker/a037de1ae93c43370029427523a61b7bd6ad86a3bed6ae5d92cfe88e9f64d548@716054179       95.9K      -   241M  -
data/docker/a1850a50f6051ff74305bc8941ddfcf80f562ac3d58d28766d2ba71413550602@760018284        170K      -   610M  -
data/docker/a370a336d9a6f0fc66705ab70760d37c2b81c2d873f1b7aace16b8836915c0be@686128668        309K      -  72.5M  -
data/docker/a5892b82c7f18061ef5f18cf033a715d108e92d91dfab17f8c274a5ad8980f67-init@568022863   170K      -   232M  -
data/docker/a94de87529be65f3b309688680d9af18b39a03732363f7d38c88854967cfec6f@669638598       95.9K      -  31.1M  -
data/docker/a9d470aa3d89892def307414ad5254a13082f09a2da6e288d6423c8d01ad236d@532523424        117K      -   231M  -
data/docker/abaf3a4407be73b82637d1b85860daf704fe1dfc9b5dfab54efe6fecac58efbe@24919291           0B      -  3.59M  -
data/docker/adb92c9c278d67e6b5dc8c9f6de8dc12d9ef21345294175fec604e52e4dcb466@622783891          0B      -   227M  -
data/docker/adb92c9c278d67e6b5dc8c9f6de8dc12d9ef21345294175fec604e52e4dcb466@622733567          0B      -   227M  -
data/docker/adb92c9c278d67e6b5dc8c9f6de8dc12d9ef21345294175fec604e52e4dcb466@622722238          0B      -   227M  -
data/docker/b13e80d785b5bbe416d972e13e7bc117035fd1267fcbf238349d78b055c42420@523594989       95.9K      -   231M  -
data/docker/cb314788a0c48ef73a92e291841e6615dac3d62261c5cdf5196562148f49fc31@579034593        128K      -   111M  -
data/docker/cdbbfbeb4d9faac20f8fbff5fd14841dfdfdbda86911ee7fca58e2e28506f989@481624848          0B      -  60.5M  -
data/docker/ceda1933cef85963a253b452289eb9603a97f841d709ff59d459618e27009e91@409615131          0B      -   120M  -
data/docker/cf5db6331f3b3858c80c4166963e2c71d1eeffcd869edba3cb6249a9bbcca01b@408443002          0B      -  59.1M  -
data/docker/d1071ae89b4759d031cfa823cc8481f0885b21bd766d49c69d1125fdf490a794@472359958        107K      -  73.5M  -
data/docker/d26370e39b7bfb32d04c0008af4966f867bb3cb75c65a8b16d64109f3e85cea1@859773965        128K      -   234M  -
data/docker/d366ce4f234240928fb9be86483ae593a92b3620334e68056ffb8ae2bc44c789@779105169        373K      -  79.7M  -
data/docker/d4ad7500f569d134755bcbf97ea37b4c5ec2da9e9af36d065702465ceacee3e4@844694509        107K      -   631M  -
data/docker/d4b1a9e0c9fd0eadefe033cdd7906c9e0228c669eb80ff2227aec38f6055da3b-init@202994451   181K      -   234M  -
data/docker/d4f082fb9e3139cb5a1642a9a82b9bea39c98a1ab49045529a67ce2af60f5057@836083644        149K      -   228M  -
data/docker/d528e1de4291d6819be4c109b9f8d6dd74b38ed197b29994ab2cae48018ab25e@120220476       1.13M      -   105M  -
data/docker/d6ef8ef71060eb204cd5375c17177d0c9d85653088b20d3c2527edc2164242c3@256469360          0B      -  54.2M  -
data/docker/de18b3e53c4d686975c1713b17510365bac8f753c9533292cbaea875d635797d@444762544          0B      -  59.5M  -
data/docker/de3e87b6380714d2754ccba02c96e28fe776dac5a8e7586990d7244f534f0659@109420515        213K      -  3.81M  -
data/docker/de8e8a6bcf89a44811a3fa2d06f2f1eebf68bb388c21388b5ddb9736476971dc@940291563       1.87M      -  88.3M  -
data/docker/df879f27a7e5e743e02b218ce30310c87c48afc8d7423c40c4e621e06667dab4@706620909        107K      -   631M  -
data/docker/e31fe5152ce349edb19b8867fc4588356be6a3f1a84d4f1cf8d28210cad52e06@964918638        107K      -   631M  -
data/docker/e412ba41b5ab3b912b0d611ba7c279c08fa8cebe8318bed74a0f9823c9391f06@198338428          0B      -   163M  -
data/docker/e672e06cd2da7596c262783346f945f732d6323a3c043f5eafb78bfc6ac03470@516376348        139K      -   228M  -
data/docker/ec586c99b3a8a4a42d989242c9b34786630e98149e8f86e6a77934c8da88f0b1@2278217          107K      -   631M  -
data/docker/f3ab50a6cc0eafb72e59e359fdb78a9fa14a8b3ab0ac8fc02b27cd4c0d36a741@723841651       95.9K      -  80.5M  -
data/docker/f522fbb82576431163a6f5ded215999f894f424887050ad941682eb01dc94fc1@120176147          0B      -   159M  -
data/docker/f8e915413fce58205da2d20411d1a46ab679d3501ff3806eb0ee81fac7cdbf51@852059862       1.87M      -  82.0M  -
data/docker/fa5a753c96b0970177b6c27ef9c3bd0c8f59ddc0846114123114c1428330975c@457495665        117K      -   232M  -
data/docker/ff5514bcc72a87ee972b7955dbbff05747caa0bc5fbe17de2c5d5d2213883168@593798694        107K      -  72.6M  -
data/docker/ff5514bcc72a87ee972b7955dbbff05747caa0bc5fbe17de2c5d5d2213883168@191561500       85.2K      -  72.6M  -

Last but not least, the list of mountpoints on my system, pertaining to docker:

data/docker on /var/lib/docker type zfs (rw,noatime,xattr,noacl)
data/docker/0938cae664ffe8aa343944e385aafa3ddcd5b9f50b859f3d2640e97fd44b922e on /var/lib/docker/zfs/graph/0938cae664ffe8aa343944e385aafa3ddcd5b9f50b859f3d2640e97fd44b922e type zfs (rw,relatime,xattr,noacl)
shm on /var/lib/docker/containers/97b51fc0911460b2c97ec0aa7cd401fc5d195572f9ea6fc81f317b37d359a48c/mounts/shm type tmpfs (rw,nosuid,nodev,noexec,relatime,size=65536k)
nsfs on /run/docker/netns/4bf493ac6f54 type nsfs (rw)
data/docker/0707c1fad7068df631efd783d55bc3f1f73a3e6d75b4da31ed43d9e90e858ef3 on /var/lib/docker/zfs/graph/0707c1fad7068df631efd783d55bc3f1f73a3e6d75b4da31ed43d9e90e858ef3 type zfs (rw,relatime,xattr,noacl)
shm on /var/lib/docker/containers/afac8a0b00663211ec1b4ae3580f6ae71fa115aa403828bb38cd9b4ad8ae8541/mounts/shm type tmpfs (rw,nosuid,nodev,noexec,relatime,size=65536k)
nsfs on /run/docker/netns/84df3110766a type nsfs (rw)
data/docker/173d8ad453c73fce36f8ea3c026b422d76238ac721e240a0afc0619d93162629 on /var/lib/docker/zfs/graph/173d8ad453c73fce36f8ea3c026b422d76238ac721e240a0afc0619d93162629 type zfs (rw,relatime,xattr,noacl)
shm on /var/lib/docker/containers/ee740c0f1cbff18ac9ee6de2ce5826a925c6e457617d630316a0614aac47b106/mounts/shm type tmpfs (rw,nosuid,nodev,noexec,relatime,size=65536k)
nsfs on /run/docker/netns/f6ff0cf56f7e type nsfs (rw)
data/docker/63de6adcac47f42ca9ab7ff692a1caef2ade34e9d18d39cf651577f2677ff6b4 on /var/lib/docker/zfs/graph/63de6adcac47f42ca9ab7ff692a1caef2ade34e9d18d39cf651577f2677ff6b4 type zfs (rw,relatime,xattr,noacl)
shm on /var/lib/docker/containers/bc560834cd87e0fa9b4aa2f01b9c4e214f76d6ee7f18af79ddc614e4f6162b83/mounts/shm type tmpfs (rw,nosuid,nodev,noexec,relatime,size=65536k)
nsfs on /run/docker/netns/c2d758899b81 type nsfs (rw)
data/docker/8aadaf6a284582d66ebf8f18971559b8d8f059adb85941b740b396831e210217 on /var/lib/docker/zfs/graph/8aadaf6a284582d66ebf8f18971559b8d8f059adb85941b740b396831e210217 type zfs (rw,relatime,xattr,noacl)
shm on /var/lib/docker/containers/74618452f477c75be130ea695f65733b56997cb073372c37dbbcf8d0c03060fb/mounts/shm type tmpfs (rw,nosuid,nodev,noexec,relatime,size=65536k)
nsfs on /run/docker/netns/e6e8dfae3412 type nsfs (rw)
data/docker/684db34bc1f697a4b3bb862234f1df08a20c0cc082bea7c5b46e88a9833cf315 on /var/lib/docker/zfs/graph/684db34bc1f697a4b3bb862234f1df08a20c0cc082bea7c5b46e88a9833cf315 type zfs (rw,relatime,xattr,noacl)
shm on /var/lib/docker/containers/7615b7686c2aa0d4a41a52543701da0a279b884e9ce9645b3ddd908d8b7b11fc/mounts/shm type tmpfs (rw,nosuid,nodev,noexec,relatime,size=65536k)
nsfs on /run/docker/netns/3360791689d0 type nsfs (rw)
data/docker/a5892b82c7f18061ef5f18cf033a715d108e92d91dfab17f8c274a5ad8980f67 on /var/lib/docker/zfs/graph/a5892b82c7f18061ef5f18cf033a715d108e92d91dfab17f8c274a5ad8980f67 type zfs (rw,relatime,xattr,noacl)
shm on /var/lib/docker/containers/6646826a6d1078e13bf802f285d92b3c30221ca7d4690231f3b691cff2856999/mounts/shm type tmpfs (rw,nosuid,nodev,noexec,relatime,size=65536k)
nsfs on /run/docker/netns/35cc6bdbd75c type nsfs (rw)
data/docker/314aef0d80fce2df26a6e78f44b0caa98f8722c477d736fa95a2063221c9705e on /var/lib/docker/zfs/graph/314aef0d80fce2df26a6e78f44b0caa98f8722c477d736fa95a2063221c9705e type zfs (rw,relatime,xattr,noacl)
shm on /var/lib/docker/containers/6f7a9c2258728597a4a57c2296e21edeeb48eacaf1bdfcbceedc57beaca11b06/mounts/shm type tmpfs (rw,nosuid,nodev,noexec,relatime,size=65536k)
nsfs on /run/docker/netns/6c9cf3706a92 type nsfs (rw)
data/docker/d4b1a9e0c9fd0eadefe033cdd7906c9e0228c669eb80ff2227aec38f6055da3b on /var/lib/docker/zfs/graph/d4b1a9e0c9fd0eadefe033cdd7906c9e0228c669eb80ff2227aec38f6055da3b type zfs (rw,relatime,xattr,noacl)
data/docker/19e2b50a3a32639b216bb2e502798f85801cf10155462a3b37d07dfd3ca54fb3 on /var/lib/docker/zfs/graph/19e2b50a3a32639b216bb2e502798f85801cf10155462a3b37d07dfd3ca54fb3 type zfs (rw,relatime,xattr,noacl)
shm on /var/lib/docker/containers/69720aab78d1855fdf7941555c1c1c5bf96e0eae6491e51b983484fb63eccaad/mounts/shm type tmpfs (rw,nosuid,nodev,noexec,relatime,size=65536k)
shm on /var/lib/docker/containers/9a4d12a941fcdadb74a94c84b73f2374c4889d6564d6a6177ffdceeb21df08ec/mounts/shm type tmpfs (rw,nosuid,nodev,noexec,relatime,size=65536k)
nsfs on /run/docker/netns/bcaee0c419f2 type nsfs (rw)
nsfs on /run/docker/netns/cf6a800e8f40 type nsfs (rw)

Thanks again, hope someone can help me understand what is happening (and clean it up if necessary :P).

Really no one feels like helping out?

At least the networks, can someone at least answer that?