So, with Snapshot 20210427, pkcon now works for installing packages, e.g., from
a terminal (although, it does follow weak dependencies, but that's another
issue).
However, updating via GNOME Software does not work yet.
So, this is the situation right after install:
dario@localhost:~> sudo snapper list
# | Type | Pre # | Date | User | Used Space |
Cleanup | Description | Userdata
---+--------+-------+---------------------------------+------+------------+---------+-----------------------+--------------
0 | single | | | root | |
| current |
1* | single | | Wed 05 May 2021 07:17:32 AM UTC | root | 43.02 MiB |
| first root filesystem |
2 | single | | Wed 05 May 2021 07:24:05 AM UTC | root | 36.47 MiB |
number | after installation | important=yes
In GNOME Software, I see the notification of some updates, I can go to the
proper tab, click 'Download' and then click 'Restart & Install'. At which
point, on the GUI, I see this error message:
"Unable to install updates:
GDBus.Error:org.gtk.GDBus.UnmappedGError.Quark._pk_2dengine_2derror-2dquark.Code1:Failed
to create symlink: Read-only file system"
If I go ahead, after the reboot, the updates have not been installed. This is
the status of system snapshots:
dario@localhost:~> sudo snapper list
[sudo] password for root:
# | Type | Pre # | Date | User | Used Space |
Cleanup | Description | Userdata
---+--------+-------+---------------------------------+------+------------+---------+-----------------------+-------------------------------------
0 | single | | | root | |
| current |
1* | single | | Wed 05 May 2021 07:17:32 AM UTC | root | 144.00 KiB |
| first root filesystem |
2 | single | | Wed 05 May 2021 07:24:05 AM UTC | root | 36.47 MiB |
number | after installation | important=yes
3 | single | | Wed 05 May 2021 10:51:00 AM UTC | root | 19.75 MiB |
| Snapshot Update of #1 | transactional-update-in-progress=yes
4 | single | | Wed 05 May 2021 10:55:47 AM UTC | root | 19.75 MiB |
| Snapshot Update of #1 | transactional-update-in-progress=yes
5 | single | | Wed 05 May 2021 11:06:10 AM UTC | root | 19.75 MiB |
| Snapshot Update of #1 | transactional-update-in-progress=yes
6 | single | | Wed 05 May 2021 11:06:48 AM UTC | root | 160.00 KiB |
| Snapshot Update of #1 | transactional-update-in-progress=yes
In journalctl, I see a bunch of lines like these:
May 05 11:07:19 localhost.localdomain systemd[1706]:
\x2esnapshots-6-snapshot-.snapshots.mount: Succeeded.
May 05 11:07:19 localhost.localdomain systemd[1706]:
\x2esnapshots-6-snapshot-boot-writable.mount: Succeeded.
May 05 11:07:19 localhost.localdomain systemd[1706]:
\x2esnapshots-6-snapshot-root.mount: Succeeded.
May 05 11:07:19 localhost.localdomain systemd[1706]:
\x2esnapshots-6-snapshot-sys-fs-fuse-connections.mount: Succeeded.
May 05 11:07:19 localhost.localdomain systemd[1706]:
\x2esnapshots-6-snapshot-sys-kernel-config.mount: Succeeded.
May 05 11:07:19 localhost.localdomain systemd[1706]:
\x2esnapshots-6-snapshot-sys-kernel-tracing.mount: Succeeded.
May 05 11:07:19 localhost.localdomain systemd[1706]:
\x2esnapshots-6-snapshot-sys.mount: Succeeded.
May 05 11:07:19 localhost.localdomain systemd[1706]:
tmp-transactional\x2dupdate\x2djNF9Qy-proc.mount: Succeeded.
May 05 11:07:19 localhost.localdomain systemd[1706]:
tmp-transactional\x2dupdate\x2djNF9Qy-dev.mount: Succeeded.
May 05 11:07:19 localhost.localdomain systemd[1706]:
tmp-transactional\x2dupdate\x2djNF9Qy-sys-kernel-config.mount: Succeeded.
May 05 11:07:19 localhost.localdomain systemd[1706]:
tmp-transactional\x2dupdate\x2djNF9Qy-sys-kernel-tracing.mount: Succeeded.
May 05 11:07:19 localhost.localdomain systemd[1706]:
tmp-transactional\x2dupdate\x2djNF9Qy-sys-kernel-debug.mount: Succeeded.
May 05 11:07:19 localhost.localdomain systemd[1706]:
tmp-transactional\x2dupdate\x2djNF9Qy-sys-fs-selinux.mount: Succeeded.
May 05 11:07:19 localhost.localdomain systemd[1706]:
tmp-transactional\x2dupdate\x2djNF9Qy-sys-fs-bpf.mount: Succeeded.
May 05 11:07:19 localhost.localdomain systemd[1706]:
tmp-transactional\x2dupdate\x2djNF9Qy-sys-fs-pstore.mount: Succeeded.
May 05 11:07:19 localhost.localdomain systemd[1706]:
tmp-transactional\x2dupdate\x2djNF9Qy-sys-fs-cgroup.mount: Succeeded.
May 05 11:07:19 localhost.localdomain systemd[1706]:
tmp-transactional\x2dupdate\x2djNF9Qy-sys-kernel-security.mount: Succeeded.
May 05 11:07:19 localhost.localdomain systemd[1706]:
tmp-transactional\x2dupdate\x2djNF9Qy-sys-fs-fuse-connections.mount: Succeeded.
May 05 11:07:19 localhost.localdomain systemd[1706]:
tmp-transactional\x2dupdate\x2djNF9Qy-sys.mount: Succeeded.
May 05 11:07:19 localhost.localdomain systemd[1706]:
tmp-transactional\x2dupdate\x2djNF9Qy.mount: Succeeded.
PackageKit logs does not seem to me to contain anything related to this
operation, but I'm happy to provide further info.
After a few seconds, `snapper list` is slightly different (probably due to the
fact that, right after boot, packagekit was scanning for updates):
dario@localhost:~> sudo snapper list
# | Type | Pre # | Date | User | Used Space |
Cleanup | Description | Userdata
---+--------+-------+---------------------------------+------+------------+---------+-----------------------+-------------------------------------
0 | single | | | root | |
| current |
1* | single | | Wed 05 May 2021 07:17:32 AM UTC | root | 19.72 MiB |
| first root filesystem |
2 | single | | Wed 05 May 2021 07:24:05 AM UTC | root | 36.47 MiB |
number | after installation | important=yes
3 | single | | Wed 05 May 2021 10:51:00 AM UTC | root | 19.75 MiB |
| Snapshot Update of #1 | transactional-update-in-progress=yes
4 | single | | Wed 05 May 2021 10:55:47 AM UTC | root | 19.75 MiB |
| Snapshot Update of #1 | transactional-update-in-progress=yes
5 | single | | Wed 05 May 2021 11:06:10 AM UTC | root | 19.75 MiB |
| Snapshot Update of #1 | transactional-update-in-progress=yes
Of course, the expected results would be that packages are actually
updated/installed.