Needs-restarting -r Fedora 33

stellr · May 10, 2021, 12:08pm

Install new kernel with yum update and and needs-restarting doesn’t report needing to reboot:

…
Installed:
kernel-5.11.18-200.fc33.x86_64
kernel-core-5.11.18-200.fc33.x86_64
kernel-devel-5.11.18-200.fc33.x86_64
kernel-modules-5.11.18-200.fc33.x86_64
kernel-modules-extra-5.11.18-200.fc33.x86_64
Removed:
kernel-5.11.15-200.fc33.x86_64
kernel-core-5.11.15-200.fc33.x86_64
kernel-devel-5.11.15-200.fc33.x86_64
kernel-modules-5.11.15-200.fc33.x86_64
kernel-modules-extra-5.11.15-200.fc33.x86_64

Complete!

needs-restarting -r

No core libraries or services have been updated since boot-up.
Reboot should not be necessary.

cat /etc/*release

Fedora release 33 (Thirty Three)
NAME=Fedora
VERSION=“33 (Workstation Edition)”
ID=fedora
VERSION_ID=33
VERSION_CODENAME=“”
PLATFORM_ID=“platform:f33”
PRETTY_NAME=“Fedora 33 (Workstation Edition)”
ANSI_COLOR=“0;38;2;60;110;180”
LOGO=fedora-logo-icon
CPE_NAME=“cpe:/o:fedoraproject:fedora:33”
HOME_URL=“https://fedoraproject.org/”
DOCUMENTATION_URL=“System Administrator’s Guide :: Fedora Docs”
SUPPORT_URL=“Communication in Fedora :: Fedora Docs”
BUG_REPORT_URL=“https://bugzilla.redhat.com/”
REDHAT_BUGZILLA_PRODUCT=“Fedora”
REDHAT_BUGZILLA_PRODUCT_VERSION=33
REDHAT_SUPPORT_PRODUCT=“Fedora”
REDHAT_SUPPORT_PRODUCT_VERSION=33
PRIVACY_POLICY_URL=“Privacy Statement for the Fedora Project :: Fedora Docs”
VARIANT=“Workstation Edition”
VARIANT_ID=workstation
Fedora release 33 (Thirty Three)
Fedora release 33 (Thirty Three)

ersen · May 10, 2021, 12:34pm

According to its manpage, it looks through running processes and tries to detect those that use files from packages that have been updated after the given process started. I guess kernel is not included to “running processes”.

ankursinha · May 10, 2021, 12:53pm

Which is OK, since the current kernel is not replaced. If one wants to use the new kernel, they need to reboot, but they can continue to use the current kernel without restarting and not experience any issues.