Bug 1839341
| Summary: | skew_tick=1 kernel parameter included in tuned_params, but not making it to /proc/cmdline | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 8 | Reporter: | broskos |
| Component: | tuned | Assignee: | Jaroslav Škarvada <jskarvad> |
| Status: | CLOSED DUPLICATE | QA Contact: | qe-baseos-daemons |
| Severity: | unspecified | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 8.1 | CC: | broskos, jeder, jskarvad, olysonek |
| Target Milestone: | rc | Flags: | pm-rhel:
mirror+
|
| Target Release: | 8.0 | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2020-05-28 11:54:27 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
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Description
broskos
2020-05-23 13:50:52 UTC
This is probably dupe of bug 1669252. Could you check with updated version of the grub and report back? I have the updated version of grub and I still see this issue:
grub2-common-2.02-81.el8.noarch
redhat-release-8.2-1.0.el8.x86_64
cat /proc/cmdline
BOOT_IMAGE=(hd0,msdos2)/boot/vmlinuz-4.18.0-193.1.2.rt13.53.el8_2.x86_64 root=UUID=63a12e8d-4563-453e-9df5-d62a8fc0f0ea ro console=ttyS0 console=ttyS0,115200n81 no_timer_check crashkernel=auto rhgb quiet default_hugepagesz=1GB hugepagesz=1G hugepages=350 nx_huge_pages_recovery_ratio=0 intel_iommu=on iommu=pt elevator=cfq audit=1 nomodeset intel_idle.max_cstate=1 tsc=reliable rcu_nocb_poll=1 clocksource=tsc pcie_aspm.policy=performance =1 isolcpus=managed_irq,domain,2-35,38-71 intel_pstate=disable nosoftlockup tsc=nowatchdog nohz=on nohz_full=2-35,38-71 rcu_nocbs=2-35,38-71
# =1, but no skew_tick=1 (right before isolcpus)
cat /etc/default/grub
GRUB_TIMEOUT=1
GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' /etc/system-release)"
GRUB_DEFAULT=saved
GRUB_DISABLE_SUBMENU=true
GRUB_TERMINAL_OUTPUT="console"
GRUB_CMDLINE_LINUX="console=ttyS0 console=ttyS0,115200n81 no_timer_check crashkernel=auto rhgb quiet"
GRUB_DISABLE_RECOVERY="true"
GRUB_ENABLE_BLSCFG=true
GRUB_CMDLINE_LINUX_DEFAULT="${GRUB_CMDLINE_LINUX_DEFAULT:+$GRUB_CMDLINE_LINUX_DEFAULT }\$tuned_params"
TRIPLEO_HEAT_TEMPLATE_KERNEL_ARGS=" default_hugepagesz=1GB hugepagesz=1G hugepages=350 nx_huge_pages_recovery_ratio=0 intel_iommu=on iommu=pt elevator=cfq audit=1 nomodeset intel_idle.max_cstate=1 tsc=reliable rcu_nocb_poll=1 clocksource=tsc pcie_aspm.policy=performance"
GRUB_CMDLINE_LINUX="${GRUB_CMDLINE_LINUX:+$GRUB_CMDLINE_LINUX }${TRIPLEO_HEAT_TEMPLATE_KERNEL_ARGS}"
GRUB_INITRD_OVERLAY="${GRUB_INITRD_OVERLAY:+$GRUB_INITRD_OVERLAY }\$tuned_initrd"
cat /boot/grub2/grubenv
# GRUB Environment Block
saved_entry=0a922a89c7d06319ac184e86ac15b098-4.18.0-193.1.2.rt13.53.el8_2.x86_64
kernelopts=root=UUID=63a12e8d-4563-453e-9df5-d62a8fc0f0ea ro console=ttyS0 console=ttyS0,115200n81 no_timer_check crashkernel=auto rhgb quiet default_hugepagesz=1GB hugepagesz=1G hugepages=350 nx_huge_pages_recovery_ratio=0 intel_iommu=on iommu=pt elevator=cfq audit=1 nomodeset intel_idle.max_cstate=1 tsc=reliable rcu_nocb_poll=1 clocksource=tsc pcie_aspm.policy=performance $tuned_params
boot_success=1
tuned_params=skew_tick=1 isolcpus=managed_irq,domain,2-35,38-71 intel_pstate=disable nosoftlockup tsc=nowatchdog nohz=on nohz_full=2-35,38-71 rcu_nocbs=2-35,38-71
tuned_initrd=
boot_indeterminate=0
########################################################################################################################################################################################################################################################################################################################
Is it non-efi platform? If yes, you need to also reinstall grub by: # grub2-install ROOT_BOOT_DEVICE For example: # lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT vda 253:0 0 20G 0 disk `-vda1 253:1 0 20G 0 part / # grub2-install /dev/vda Installing for i386-pc platform. Installation finished. No error reported. Thanks, running grub2-install did fix the issue. the newer version of grub2 was installed as part of a system update 8.1 -> 8.2, pretty much 'dnf update -y' Any idea why the update didn't take care of the re-install of grub on the root_boot_device? It's probably grub feature. I think grub has never done it. I think it doesn't know what's your ROOT_BOOT_DEVICE and don't want to touch your MBR, because you could have there your own (or 3rd party) bootloader (e.g for multiboot). I proposed KB article about this problem. Now closing this bugzilla as a dupe. *** This bug has been marked as a duplicate of bug 1669252 *** |