Multipass snap cannot store data in mounted folder

[shabiel]

Describe the bug
Followed the instruction here: #1789 to change where multipass stores its virtual machines. However, the snap cannot access the directory that I want it to use.

To Reproduce
How, and what happened?

snap stop multipass
snap connect multipass:removable-media  
snap connect multipass:all-home
mkdir -p /extra/multipass-files/
mkdir /etc/systemd/system/snap.multipass.multipassd.service.d/
tee /etc/systemd/system/snap.multipass.multipassd.service.d/override.conf <<EOF
[Service]
Environment=MULTIPASS_STORAGE=/extra/multipass-files/
EOF
systemctl daemon-reload
snap start multipass
exit # root

Expected behavior
Multipass doesn't work.

Logs

Caught an unhandled exception: unable to create directory '/extra/multipass-files/cache'

Additional info

• OS: Ubuntu 20.04.2 LTS
• multipass 1.7.0
• Multipass currently inoperative; cannot give you info --all.

[Saviq]

@shabiel I'm afraid that's by design. If you snap connect multipass:removable-media, you'll be able to use external drives. See https://snapcraft.io/docs/removable-media-interface for details.

By default, you can use /home/*.

[shabiel]

Thank you.

[andrealcantara]

i try make a folder /extra/multipass-files/ chmod 777 and work.
in my case is /mnt/linuxhelper/multipass
and snapapp create all path needed.