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Bug
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Resolution: Unresolved
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Critical
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rhel-10.1, rhel-10.2
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None
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tuned-2.27.0-0.1.rc1.el10
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None
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Critical
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ZStream, Patch
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1
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rhel-net-perf
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ssg_core_services
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0
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False
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False
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None
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_N&P-Refined_
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Regression Exception
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None
What were you trying to do that didn't work?
Enable cpu-partitioning on a RHEL-10 VM installed with LVM autopart.
Please provide the package NVR for which bug is seen:
tuned-2.22.1-2.el10
How reproducible:
reliably
Steps to reproduce
- Install RHEL-10 with LVM disk partitioning (default for autopart)
- dnf -y install tuned tuned-utils tuned-profiles-cpu-partitioning
- systemctl enable --now tuned
- tuned-adm profile cpu-partitioning
- reboot
Expected results
Machine boots, cpu-partitioning is applied
Actual results
[* ] (1 of 2) Job dev-mapper-rhel_rhel
x…vice/start running (2s / no limit), machine is no longer bootable
Extra evidence
INFO tuned.daemon.daemon: stopping tuning INFO tuned.profiles.loader: loading profile: cpu-partitioning INFO tuned.daemon.daemon: starting tuning INFO tuned.units.manager: skipping plugin 'systemd', not supported on your system INFO tuned.plugins.base: instance cpu: assigning devices cpu1, cpu0, cpu3, cpu2 INFO tuned.plugins.plugin_cpu: We are running on an x86 GenuineIntel platform WARNING tuned.plugins.plugin_cpu: your CPU doesn't support MSR_IA32_ENERGY_PERF_BIAS, ignoring CPU energy performance bias INFO tuned.plugins.plugin_rtentsk: opened SOF_TIMESTAMPING_OPT_TX_SWHW socket INFO tuned.plugins.plugin_cpu: setting new cpu latency 3 INFO tuned.plugins.plugin_sysctl: reapplying system sysctl INFO tuned.plugins.plugin_script: calling script '/usr/lib/tuned/cpu-partitioning/script.sh' with arguments '['start']' ERROR tuned.plugins.plugin_script: script '/usr/lib/tuned/cpu-partitioning/script.sh' error output: 'cp: cannot stat '/etc/systemd/system.conf': No such file or directory' INFO tuned.plugins.plugin_bootloader: generating initrd image from directory '/tmp/tmp.9WoHDPSkgC' INFO tuned.plugins.plugin_bootloader: installing initrd image as '/boot/tuned-initrd.img' INFO tuned.plugins.plugin_bootloader: removing directory '/tmp/tmp.9WoHDPSkgC' INFO tuned.plugins.plugin_bootloader: installing additional boot command line parameters to grub2
lsinitrd /boot/tuned-initrd.img
Image: /boot/tuned-initrd.img: 4.0K ======================================================================== Version: Arguments: dracut modules: ======================================================================== drwx------ 4 root root 0 Jun 10 16:11 . drwxr-xr-x 3 root root 0 Jun 10 16:11 etc drwxr-xr-x 2 root root 0 Jun 10 16:11 etc/systemd drwxr-xr-x 3 root root 0 Jun 10 16:11 usr drwxr-xr-x 3 root root 0 Jun 10 16:11 usr/lib drwxr-xr-x 3 root root 0 Jun 10 16:11 usr/lib/dracut drwxr-xr-x 3 root root 0 Jun 10 16:11 usr/lib/dracut/hooks drwxr-xr-x 2 root root 0 Jun 10 16:11 usr/lib/dracut/hooks/pre-udev -rwxr-xr-x 1 root root 484 Jun 10 16:11 usr/lib/dracut/hooks/pre-udev/00-tuned-pre-udev.sh ========================================================================
Investigation notes
- No other profile seems to have such an effect.
Reinstalling with autopart --type=plain works around the issue- Replacing 00-tuned-pre-udev.sh with a no-op doesn't fix the situation
- Adding kernel cmdline options manually doesn't trigger the same failure
- sed -i "/initrd_add_dir.*/d" /usr/lib/tuned/cpu-partitioning/tuned.conf before step 4 does fix the issue
So I suspect that cpu-partitioning is unique in its initrd manipulation mechanism,
and this mechanism renders systems using LVM unbootable.
Maybe this overlay is no longer overlaying, leading to the initrd not finding lvm modules?
- account is impacted by
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RHEL-148513 [QE TASK] LVM + cpu-partitioning = broken boot
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- Closed
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- links to
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RHBA-2026:159146
tuned update
