as this is needed only for the debian experimental branch (with
v247-rc2), marking this as invalid for ubuntu.
** Description changed:
[impact]
when upgrading, all serial devices are changed to 'dead' and thus all
serial consoles are stopped
[test case]
on a system configured with a serial console, upgrade from focal to the
latest systemd package from upstream, and check the serial console. the
state of the serial port and/or serial console can also be checked with
systemctl status, e.g.:
$ systemctl status dev-ttyS0.device
[regression potential]
and regression would likely involve incorrectly detected or operational
devices after a systemd version upgrade, or after a systemd pid1 reexec
or reload.
[scope]
- TBD
+ both upstream commits (ids below) are first included upstream in
+ v247-rc1
+
+ [other info]
+
+ Upstream commit e77b146f825ef1bb63c297cc713962b94422d2c6 slightly
+ altered the meaning of the 'G' sd-device db tag, to 'any' tag, and added
+ a new 'Q' tag, meaning 'current' tag. When upgrading from udev before
+ that commit to after the commit, the existing udev db is not updated, so
+ the 'Q' tag is not present in the /run/udev/data/ db file for any
+ previously-existing devices.
+
+ However, upstream commit 242c1c075aa284c8a8657c5aca36147f528146ba then
+ changes the 'device_is_ready()' check in src/core/device.c to also check
+ for the 'current' tag of 'systemd'. That tag will not be present for any
+ devices in the system since udev just now was changed to know about the
+ 'Q' type 'current' tags, and has not updated its /run/udev/data db
+ files.
+
+ This leads to the systemd daemon-reexec ignoring all devices tagged with
+ 'systemd', but only the older 'G' tag and not the new 'Q' tag, and
+ marking them all as 'dead'.
** Changed in: systemd (Ubuntu)
Status: New => Invalid
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https://bugs.launchpad.net/bugs/1905594
Title:
upgrade disables all serial devices and consoles
Status in systemd package in Ubuntu:
Invalid
Bug description:
[impact]
when upgrading, all serial devices are changed to 'dead' and thus all
serial consoles are stopped
[test case]
on a system configured with a serial console, upgrade from focal to
the latest systemd package from upstream, and check the serial
console. the state of the serial port and/or serial console can also
be checked with systemctl status, e.g.:
$ systemctl status dev-ttyS0.device
[regression potential]
and regression would likely involve incorrectly detected or
operational devices after a systemd version upgrade, or after a
systemd pid1 reexec or reload.
[scope]
both upstream commits (ids below) are first included upstream in
v247-rc1
[other info]
Upstream commit e77b146f825ef1bb63c297cc713962b94422d2c6 slightly
altered the meaning of the 'G' sd-device db tag, to 'any' tag, and
added a new 'Q' tag, meaning 'current' tag. When upgrading from udev
before that commit to after the commit, the existing udev db is not
updated, so the 'Q' tag is not present in the /run/udev/data/ db file
for any previously-existing devices.
However, upstream commit 242c1c075aa284c8a8657c5aca36147f528146ba then
changes the 'device_is_ready()' check in src/core/device.c to also
check for the 'current' tag of 'systemd'. That tag will not be present
for any devices in the system since udev just now was changed to know
about the 'Q' type 'current' tags, and has not updated its
/run/udev/data db files.
This leads to the systemd daemon-reexec ignoring all devices tagged
with 'systemd', but only the older 'G' tag and not the new 'Q' tag,
and marking them all as 'dead'.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1905594/+subscriptions
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