Boot2Docker (on Windows) running Mongo with shared folder (This file system is not supported)

Question

I am trying to start a Mongo container using shared folders on Windows using Boot2Docker. When starting using run -it -v /c/Users/310145787/Desktop/mongo:/data/db mong

Answer 1

Apparently, according to this gist and Sev (sevastos), mongo doesn't support mounted volume through the VirtualBox shared folder:

See mongoDB Productions Notes:

MongoDB requires a filesystem that supports fsync() on directories.
For example, HGFS and Virtual Box’s shared folders do not support this operation.

the easiest solutions of all and a proper way for data persistance is Data Volumes:

Assuming you have a container that has VOLUME ["/data"]

# Create a data volume
docker create -v /data --name yourData busybox true
# and use
docker run --volumes-from yourData ...

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This isn't always ideal (but the following is for Mac, by Edward Chu (chuyik)):

I don't think it's a good solution, because the data just moved to another container right?
But it still inside the container rather than local system(mac disk).

I found another solution, that is to use sshfs to map data between boot2docker vm and your mac, which may be better since data is not stored inside linux container.

Create a directory to store data inside boot2docker:

boot2docker ssh
mkdir -p /mnt/sda1/dev

Use sshfs to link boot2docker and mac:

echo tcuser | sshfs docker@localhost:/mnt/sda1/dev  -p 2022 -o password_stdin

Run image with mongo installed:

 docker run -v /mnt/sda1/dev:/data/db  mongod

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The corresponding boot2docker issue points out to docker issue 12590 ( Problem with -v shared folders in 1.6 #12590), which points to the work around of using double-slash.

using a double slash seems to work. I checked it locally and it works.

docker run -d -v //c/Users/marco/Desktop/data:/data 

it also works with

docker run -v /$(pwd):/data