[Bug 2100564] [NEW] lxd-installer shim fails to install with snapstore error
Launchpad Bug Tracker
2100564 at bugs.launchpad.net
Thu Feb 27 22:49:10 UTC 2025
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Description: Ubuntu Plucky Puffin (development branch) (*LXD container)
Release: 25.04
Image serial: 20250217
Source package: https://launchpad.net/ubuntu/plucky/+package/lxd-installer
Package version:
```
$ apt-cache policy lxd-installer
lxd-installer:
Installed: 10
Candidate: 10
Version table:
*** 10 100
100 /var/lib/dpkg/status
```
Expected behaviour: `lxd init --auto --storage-backend dir` command
would trigger then `lxd-installer` shim and`lxd` would be installed in
the container.
What happened instead:
```
10:19:41 2025-02-17 17:19:41,454 [INFO] test_framework.tests.lxd_start_stop: initializing lxd
10:19:41 Installing LXD snap, please be patient.
10:19:41 Traceback (most recent call last):
10:19:41 File "<string>", line 1, in <module>
10:19:41 import socket; s=socket.socket(socket.AF_UNIX); s.connect("/run/lxd-installer.socket"); s.send(b"x"); s.recv(1)
10:21:12 ~~~~~~^^^
10:21:12 ConnectionResetError: [Errno 104] Connection reset by peer
```
The command that triggers the shim is `lxd init --auto --storage-backend
dir`
Reproducer:
This failure is intermittent, and I have had a hard time getting a reliable reproducer for it. The best that I have got is:
```
lxc init ubuntu-minimal-daily:plucky test #20250217 serial was pulled
lxc start test
lxc exec test bash
<inside the shell>
lxd init --auto --storage-backend dir # confirm with 'y'
```
The error should appear almost instantly. If it does not, stop & delete
the instance and repeat the above.
*LXD team suggested reproducer:
```
$ while lxc launch ubuntu-minimal-daily:plucky test && lxc exec --force-noninteractive test -- lxc --version && lxc delete -f test; do sleep 1; done
```
Logs:
`journalctl --grep lxd`:
```
root at genuine-satyr:~# journalctl --grep lxd
Feb 25 23:35:52 genuine-satyr useradd[324]: add 'ubuntu' to group 'lxd'
Feb 25 23:35:52 genuine-satyr useradd[324]: add 'ubuntu' to shadow group 'lxd'
Feb 25 23:35:53 genuine-satyr systemd[1]: Starting lxd-installer.socket - Helper to install lxd snap on demand...
Feb 25 23:35:53 genuine-satyr systemd[1]: Listening on lxd-installer.socket - Helper to install lxd snap on demand.
Feb 25 23:35:56 genuine-satyr cloud-init[262]: Cloud-init v. 25.1~3geb1965a4-0ubuntu1 finished at Tue, 25 Feb 2025 23:35:56 +0000. Datasource DataSourceLXD. Up 5.51 seconds
Feb 25 23:36:00 genuine-satyr systemd[1]: Created slice system-lxd\x2dinstaller.slice - Slice /system/lxd-installer.
Feb 25 23:36:00 genuine-satyr systemd[1]: Started lxd-installer at 0-503-0.service - Helper to install lxd snap on demand (PID 503/UID 0).
Feb 25 23:36:00 genuine-satyr lxd-installer-service[504]: + [ lxd-installer-service = lxd-installer-service ]
Feb 25 23:36:00 genuine-satyr lxd-installer-service[511]: + lxd_channel
Feb 25 23:36:00 genuine-satyr lxd-installer-service[504]: + snap install lxd --channel=5.21/stable/ubuntu-25.04
Feb 25 23:36:00 genuine-satyr snapd[348]: api_snaps.go:467: Installing snap "lxd" revision unset
Feb 25 23:36:00 genuine-satyr lxd-installer-service[512]: error: cannot install "lxd": Post "https://api.snapcraft.io/v2/snaps/refresh":
Feb 25 23:36:00 genuine-satyr systemd[1]: lxd-installer at 0-503-0.service: Main process exited, code=exited, status=1/FAILURE
Feb 25 23:36:00 genuine-satyr systemd[1]: lxd-installer at 0-503-0.service: Failed with result 'exit-code'.
```
`journalctl` around failure:
```
Feb 25 23:40:12 test systemd[1]: Created slice system-lxd\x2dinstaller.slice - Slice /system/lxd-installer.
Feb 25 23:40:12 test systemd[1]: Started lxd-installer at 0-508-0.service - Helper to install lxd snap on demand (PID 508/UID 0).
Feb 25 23:40:12 test lxd-installer-service[509]: + [ lxd-installer-service = lxd-installer-service ]
Feb 25 23:40:12 test lxd-installer-service[509]: + snap wait system seed.loaded
Feb 25 23:40:12 test lxd-installer-service[516]: + lxd_channel
Feb 25 23:40:12 test lxd-installer-service[516]: + track=
Feb 25 23:40:12 test lxd-installer-service[516]: + [ -r /etc/os-release ]
Feb 25 23:40:12 test lxd-installer-service[516]: + . /etc/os-release
Feb 25 23:40:12 test lxd-installer-service[516]: + PRETTY_NAME=Ubuntu Plucky Puffin (development branch)
Feb 25 23:40:12 test lxd-installer-service[516]: + NAME=Ubuntu
Feb 25 23:40:12 test lxd-installer-service[516]: + VERSION_ID=25.04
Feb 25 23:40:12 test lxd-installer-service[516]: + VERSION=25.04 (Plucky Puffin)
Feb 25 23:40:12 test lxd-installer-service[516]: + VERSION_CODENAME=plucky
Feb 25 23:40:12 test lxd-installer-service[516]: + ID=ubuntu
Feb 25 23:40:12 test lxd-installer-service[516]: + ID_LIKE=debian
Feb 25 23:40:12 test lxd-installer-service[516]: + HOME_URL=https://www.ubuntu.com/
Feb 25 23:40:12 test lxd-installer-service[516]: + SUPPORT_URL=https://help.ubuntu.com/
Feb 25 23:40:12 test lxd-installer-service[516]: + BUG_REPORT_URL=https://bugs.launchpad.net/ubuntu/
Feb 25 23:40:12 test lxd-installer-service[516]: + PRIVACY_POLICY_URL=https://www.ubuntu.com/legal/terms-and-policies/privacy-policy
Feb 25 23:40:12 test lxd-installer-service[516]: + UBUNTU_CODENAME=plucky
Feb 25 23:40:12 test lxd-installer-service[516]: + LOGO=ubuntu-logo
Feb 25 23:40:12 test lxd-installer-service[516]: + track=5.21
Feb 25 23:40:12 test lxd-installer-service[516]: + [ -n 5.21 ]
Feb 25 23:40:12 test lxd-installer-service[516]: + [ -n 25.04 ]
Feb 25 23:40:12 test lxd-installer-service[516]: + echo 5.21/stable/ubuntu-25.04
Feb 25 23:40:12 test lxd-installer-service[509]: + CHANNEL=5.21/stable/ubuntu-25.04
Feb 25 23:40:12 test lxd-installer-service[509]: + [ -z 5.21/stable/ubuntu-25.04 ]
Feb 25 23:40:12 test lxd-installer-service[509]: + snap install lxd --channel=5.21/stable/ubuntu-25.04
Feb 25 23:40:12 test snapd[345]: api_snaps.go:467: Installing snap "lxd" revision unset
Feb 25 23:40:12 test snapd[345]: store_download.go:142: no host system xdelta3 available to use deltas
Feb 25 23:40:12 test lxd-installer-service[517]: error: cannot install "lxd": Post "https://api.snapcraft.io/v2/snaps/refresh":
Feb 25 23:40:12 test lxd-installer-service[517]: context canceled
Feb 25 23:40:12 test systemd[1]: lxd-installer at 0-508-0.service: Main process exited, code=exited, status=1/FAILURE
Feb 25 23:40:12 test systemd[1]: lxd-installer at 0-508-0.service: Failed with result 'exit-code'.
Feb 25 23:40:14 test snapd[345]: overlord.go:518: Released state lock file
Feb 25 23:40:14 test snapd[345]: daemon stop requested to wait for socket activation
Feb 25 23:40:14 test systemd[1]: snapd.service: Deactivated successfully.
Feb 25 23:40:14 test systemd[1]: snapd.service: Consumed 1.014s CPU time, 37.6M memory peak.
```
** Affects: lxd-installer (Ubuntu)
Importance: Undecided
Status: New
--
lxd-installer shim fails to install with snapstore error
https://bugs.launchpad.net/bugs/2100564
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