[linux] daemon fails to start after setting MULTIPASS_STORAGE

[Saviq]

I'll write down exactly what needs doing on each platform later today.

For snap:

# as root
$ snap stop multipass
$ snap connect multipass:removable-media  # for /mnt /media https://snapcraft.io/docs/removable-media-interface
$ snap connect multipass:all-home  # for /home/* https://snapcraft.io/docs/home-interface
$ mkdir -p <path>
$ 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=<path>
EOF
$ systemctl daemon-reload
$ snap start multipass

I got errors after trying this on Ubuntu 18.04. Snapcraft cannot find the socket.

❯ snapcraft 
Launching a VM.
Build environment is in unknown state, cleaning first.
info failed: cannot connect to the multipass socket
Please ensure multipassd is running and '/var/snap/multipass/common/multipass_socket' is accessible
launch failed: cannot connect to the multipass socket                           
Please ensure multipassd is running and '/var/snap/multipass/common/multipass_socket' is accessible
An error occurred with the instance when trying to launch with 'multipass': returned exit code 2.
Ensure that 'multipass' is setup correctly and try again.

❯ ls /var/snap/multipass/common/multipass_socket
ls: cannot access '/var/snap/multipass/common/multipass_socket': No such file or directory

❯ sudo systemctl status snap.multipass.multipassd
● snap.multipass.multipassd.service - Service for snap application multipass.multipassd
   Loaded: loaded (/etc/systemd/system/snap.multipass.multipassd.service; enabled; vendor preset: enabled)
  Drop-In: /etc/systemd/system/snap.multipass.multipassd.service.d
           └─override.conf
   Active: failed (Result: exit-code) since Wed 2021-02-24 06:45:45 WITA; 26s ago
  Process: 623 ExecStart=/usr/bin/snap run multipass.multipassd (code=exited, status=1/FAILURE)
 Main PID: 623 (code=exited, status=1/FAILURE)

Feb 24 06:45:45 fsevenm systemd[1]: snap.multipass.multipassd.service: Service hold-off time over, scheduling restart.
Feb 24 06:45:45 fsevenm systemd[1]: snap.multipass.multipassd.service: Scheduled restart job, restart counter is at 5.
Feb 24 06:45:45 fsevenm systemd[1]: Stopped Service for snap application multipass.multipassd.
Feb 24 06:45:45 fsevenm systemd[1]: snap.multipass.multipassd.service: Start request repeated too quickly.
Feb 24 06:45:45 fsevenm systemd[1]: snap.multipass.multipassd.service: Failed with result 'exit-code'.
Feb 24 06:45:45 fsevenm systemd[1]: Failed to start Service for snap application multipass.multipassd.

Any help?

Originally posted by @fsevenm in #1789 (comment)

[Saviq]

@fsevenm can you please show more of the journal log? See accessing logs.

What path did you set MULTIPASS_STORAGE to? What are your snap connections multipass?

[fsevenm]

Journal logs:

Feb 23 19:27:30 fsevenm systemd[1]: Stopped Service for snap application multipass.multipassd.
Feb 23 19:28:10 fsevenm systemd[1]: Started Service for snap application multipass.multipassd.
Feb 23 19:28:11 fsevenm multipassd[31187]: Unable to determine subnet for the mpqemubr0 subnet
Feb 23 19:28:11 fsevenm multipassd[31187]: Using AppArmor support
Feb 23 19:28:11 fsevenm multipassd[31187]: Starting dnsmasq
Feb 23 19:28:11 fsevenm multipassd[31539]: Applying AppArmor policy: multipass.dnsmasq
Feb 23 19:28:11 fsevenm multipassd[31187]: [31539] started: - --keep-in-foreground --strict-order --bind-interfaces -
Feb 23 19:28:11 fsevenm dnsmasq[31539]: started, version 2.79 cachesize 150
Feb 23 19:28:11 fsevenm dnsmasq[31539]: compile time options: IPv6 GNU-getopt DBus i18n IDN DHCP DHCPv6 no-Lua TFTP c
Feb 23 19:28:11 fsevenm dnsmasq-dhcp[31539]: DHCP, IP range 10.20.180.2 -- 10.20.180.254, lease time infinite
Feb 23 19:28:11 fsevenm dnsmasq-dhcp[31539]: DHCP, sockets bound exclusively to interface mpqemubr0
Feb 23 19:28:11 fsevenm dnsmasq[31539]: using local addresses only for domain multipass
Feb 23 19:28:11 fsevenm dnsmasq[31539]: reading /etc/resolv.conf
Feb 23 19:28:11 fsevenm dnsmasq[31539]: using local addresses only for domain multipass
Feb 23 19:28:11 fsevenm dnsmasq[31539]: using nameserver 127.0.0.53#53

Btw @Saviq, This issue was caused by dnsmasq cannot use port 53 because it was used by systemd-resolved, by following the instruction from this web I was able to fix this issue.

[fsevenm]

And about MULTIPASS_STORAGE, I use an external disk mounted at /media, it's ext4 and it's okay. Multipass is able to rw it. So I thought the issue is not about MULTIPASS_STORAGE.

Btw, thank you, adding the ability to set custom storage for the instances by setting MULTIPASS_STORAGE is really useful. I even wasn't able to log in to my computer due insufficient storage, because multipass intances takes about 10 gb.

[Saviq]

Cool! Thanks for reporting back.