** Description changed:

  [ Impact ]
  
  This has been affecting minimal and base pipelines for cloud images for
- both oracular and plucky and blocking publication for these images. The
- oracular and plucky images fail lxd related tests because lxd
+ both oracular and noble and blocking publication for these images. The
+ oracular and noble images fail lxd related tests because lxd
  installation cannot complete with the following error
  `ConnectionResetError: [Errno 104] Connection reset by peer`. This error
  is intermittent.
  
  The proposed upload allows retries of the installation to mitigate
  availability issues from the snapstore.
  
  [ Test Plan ]
  
  To reproduce the bug you can launch a container from either oracular or
  noble like so: `lxc init ubuntu-<SUITE>-daily:<SUITE> test && lxc start
  test && lxc exec test bash` where SUITE=oracular or noble.
  
  Upon connecting to the container you can run `lxd init --auto --storage-
  backend dir` which results into the error `ConnectionResetError: [Errno
  104] Connection reset by peer` intermittently. From journalctl lxd logs,
  the following appears: `error: cannot install "lxd": Post
  "https://api.snapcraft.io/v2/snaps/refresh":`
  
  The package with the proposed changes can be installed to allow the
  retry loop for installing lxd in the oracular/noble containers.
  
  [ Where problems could occur ]
  
  The possible effect of this change is posting to snapcraft more
  frequently which could increase the traffic to
  `https://api.snapcraft.io`. The number of retries is however limited and
  the installation failure intermittent so the additional retries should
  not have a significant impact on Snapcraft. The package itself does not
  have any changes as the retry targets only the installer.
  
  [ Other Info ]
  
  The same change in lxd-installer has been accepted for plucky and is has
  been in build pipelines for our plucky images for a few weeks now; these
  images do not fail on the lxd-installer anymore.
  
  [Original Description]
  
  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@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@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@0-503-0.service: Main 
process exited, code=exited, status=1/FAILURE
  Feb 25 23:36:00 genuine-satyr systemd[1]: lxd-installer@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@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@0-508-0.service: Main process 
exited, code=exited, status=1/FAILURE
  Feb 25 23:40:12 test systemd[1]: lxd-installer@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.
  ```

** Description changed:

  [ Impact ]
  
  This has been affecting minimal and base pipelines for cloud images for
  both oracular and noble and blocking publication for these images. The
  oracular and noble images fail lxd related tests because lxd
  installation cannot complete with the following error
  `ConnectionResetError: [Errno 104] Connection reset by peer`. This error
  is intermittent.
  
  The proposed upload allows retries of the installation to mitigate
  availability issues from the snapstore.
  
  [ Test Plan ]
  
  To reproduce the bug you can launch a container from either oracular or
  noble like so: `lxc init ubuntu-<SUITE>-daily:<SUITE> test && lxc start
- test && lxc exec test bash` where SUITE=oracular or noble.
+ test && lxc exec test bash` where SUITE=oracular or noble. Since this
+ error is intermittent, this reproducer is also the same.
  
  Upon connecting to the container you can run `lxd init --auto --storage-
  backend dir` which results into the error `ConnectionResetError: [Errno
  104] Connection reset by peer` intermittently. From journalctl lxd logs,
  the following appears: `error: cannot install "lxd": Post
  "https://api.snapcraft.io/v2/snaps/refresh":`
  
  The package with the proposed changes can be installed to allow the
  retry loop for installing lxd in the oracular/noble containers.
  
  [ Where problems could occur ]
  
  The possible effect of this change is posting to snapcraft more
  frequently which could increase the traffic to
  `https://api.snapcraft.io`. The number of retries is however limited and
  the installation failure intermittent so the additional retries should
  not have a significant impact on Snapcraft. The package itself does not
  have any changes as the retry targets only the installer.
  
  [ Other Info ]
  
  The same change in lxd-installer has been accepted for plucky and is has
  been in build pipelines for our plucky images for a few weeks now; these
  images do not fail on the lxd-installer anymore.
  
  [Original Description]
  
  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@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@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@0-503-0.service: Main 
process exited, code=exited, status=1/FAILURE
  Feb 25 23:36:00 genuine-satyr systemd[1]: lxd-installer@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@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@0-508-0.service: Main process 
exited, code=exited, status=1/FAILURE
  Feb 25 23:40:12 test systemd[1]: lxd-installer@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.
  ```

** Description changed:

  [ Impact ]
  
  This has been affecting minimal and base pipelines for cloud images for
  both oracular and noble and blocking publication for these images. The
  oracular and noble images fail lxd related tests because lxd
  installation cannot complete with the following error
  `ConnectionResetError: [Errno 104] Connection reset by peer`. This error
  is intermittent.
  
  The proposed upload allows retries of the installation to mitigate
  availability issues from the snapstore.
  
  [ Test Plan ]
  
  To reproduce the bug you can launch a container from either oracular or
  noble like so: `lxc init ubuntu-<SUITE>-daily:<SUITE> test && lxc start
  test && lxc exec test bash` where SUITE=oracular or noble. Since this
  error is intermittent, this reproducer is also the same.
  
  Upon connecting to the container you can run `lxd init --auto --storage-
  backend dir` which results into the error `ConnectionResetError: [Errno
  104] Connection reset by peer` intermittently. From journalctl lxd logs,
  the following appears: `error: cannot install "lxd": Post
  "https://api.snapcraft.io/v2/snaps/refresh":`
  
- The package with the proposed changes can be installed to allow the
- retry loop for installing lxd in the oracular/noble containers.
+ The package with the proposed changes will allow the retry loop to
+ attempt installing lxd in the oracular/noble containers in cases where
+ connection to api.snapcraft.io is not achieved in the first attempt.
  
  [ Where problems could occur ]
  
  The possible effect of this change is posting to snapcraft more
  frequently which could increase the traffic to
  `https://api.snapcraft.io`. The number of retries is however limited and
  the installation failure intermittent so the additional retries should
  not have a significant impact on Snapcraft. The package itself does not
  have any changes as the retry targets only the installer.
  
  [ Other Info ]
  
  The same change in lxd-installer has been accepted for plucky and is has
  been in build pipelines for our plucky images for a few weeks now; these
  images do not fail on the lxd-installer anymore.
  
  [Original Description]
  
  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@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@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@0-503-0.service: Main 
process exited, code=exited, status=1/FAILURE
  Feb 25 23:36:00 genuine-satyr systemd[1]: lxd-installer@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@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@0-508-0.service: Main process 
exited, code=exited, status=1/FAILURE
  Feb 25 23:40:12 test systemd[1]: lxd-installer@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.
  ```

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https://bugs.launchpad.net/bugs/2100564

Title:
  lxd-installer shim fails to install with snapstore error

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