从Windows 10的WSL将体积设置为Docker容器

Question

In my windows i installed docker and ubuntu 18.4 wsl.So after expose daemon on localhost, i can use windows daemon on ubuntu wsl.

I created a directory's on drive d and i made a file into data directory like below:

PS D:\wsl\data> dir
    Directory: D:\wsl\data
Mode                LastWriteTime         Length Name
----                -------------         ------ ----
-a----        8/31/2019   2:27 PM              0 New Text Document.txt
PS D:\wsl\data>

after that, i run a postgres container like below on wsl teminal:

$ docker run  --name=pg-docker3  -e POSTGRES_USER=postgres -e POSTGRES_PASSWORD=s123  -v /mnt/d/wsl/data:/var/lib/postgresql/data mdillon/postgis:11-alpine

After creating container i open container by bash :

$ docker exec -it pg-docker3 bash

This is data postgres directory:

bash-4.4# ls /var/lib/postgresql/data
PG_VERSION            pg_commit_ts          pg_logical            pg_serial             pg_subtrans           pg_xact               postmaster.pid
base                  pg_dynshmem           pg_multixact          pg_snapshots          pg_tblspc             postgresql.auto.conf
data                  pg_hba.conf           pg_notify             pg_stat               pg_twophase           postgresql.conf
global                pg_ident.conf         pg_replslot           pg_stat_tmp           pg_wal                postmaster.opts
bash-4.4# 

as you can see data directory construct in location but when i listed thing's inside data directory i can see my text file that created in host machine !!!

I created a directory inside data directory calld kk .

bash-4.4# ls /var/lib/postgresql/data
PG_VERSION            pg_commit_ts          pg_logical            pg_serial             pg_subtrans           pg_xact               postmaster.pid
base                  pg_dynshmem           pg_multixact          pg_snapshots          pg_tblspc             postgresql.auto.conf
data                  pg_hba.conf           pg_notify             pg_stat               pg_twophase           postgresql.conf
global                pg_ident.conf         pg_replslot           pg_stat_tmp           pg_wal                postmaster.opts
bash-4.4# ls /var/lib/postgresql/data/data/
kk
bash-4.4#

But not create this directory inside host as you can see:

PS D:\wsl\data> dir

    Directory: D:\wsl\data

Mode                LastWriteTime         Length Name
----                -------------         ------ ----
-a----        8/31/2019   2:27 PM              0 New Text Document.txt

Where is the /var/lib/postgresql/data/data/ ? and why it not appeared in /mnt/d/wsl/data ?

Answer 1

You must move your mounting path from /mnt to /. In this answer there is the following explanation : Can you run Docker natively on the new Windows 10 (Ubuntu) bash userspace?

Volumes

Take care when adding volumes. The path C:\\dir will be visible as /mnt/c/dir on WSL and as /c/dir/ by docker engine. You can overcome it permanently:

sudo bash -c "echo -e '[automount] \nroot = /'>/etc/wsl.conf"

You must exit and reload WSL after making the change to wsl.conf so that WSL reads in your changes on launch.

Regards