[SOLVED] How to create /etc/kernel/cmdline

[jjuk]

My PVE doesn't has cmdline file in /etc/kernel/. Therefore, I think I have to create one.
Many people have post their cmdline file content on the web. It is "root=ZFS=rpool/ROOT/pve-1 boot=zfs". What makes me concern about is the "ZFS". I believe it means the file system. However, none of the storage in my PVE use ZFS. My PVE is boot from a BTRFS volume. I also has a LVM-thin volume for storing VM images.

I've tried copying the content in /proc/cmdline (below), and then paste on the newly created /etc/kernel/cmdline. After run "pve-efiboot-tool refresh" and restart. I couldn't see anything has changed.

BOOT_IMAGE=/boot/vmlinuz-6.2.16-3-pve root=UUID=db31bc35-1226-426e-bcf4-a285c235f0d5 ro quiet​

The reason of adding /etc/kernel/cmdline file is that I want to enable IOMMU. Any suggestion is appreciated.

 

[aaron]

Are you booting with Grub? Then that is not the correct place. See https://pve.proxmox.com/pve-docs/pve-admin-guide.html#sysboot_edit_kernel_cmdline

 

[jjuk]

Are you booting with Grub? Then that is not the correct place. See https://pve.proxmox.com/pve-docs/pve-admin-guide.html#sysboot_edit_kernel_cmdline

It is systemd

 

[aaron]

systemd it not systemd-boot

systemd is used on every Proxmox VE installation. See https://pve.proxmox.com/pve-docs/pve-admin-guide.html#sysboot_determine_bootloader_used to check if Grub or systemd-boot is used.

 

[jjuk]

systemd it not systemd-boot

systemd is used on every Proxmox VE installation. See https://pve.proxmox.com/pve-docs/pve-admin-guide.html#sysboot_determine_bootloader_used to check if Grub or systemd-boot is used.

You're right. I mixed up systemd and systemd-boot. After I add the IOMMU parameters in /etc/default/grub and reboot. /proc/cmdline is updated. Thanks for the help.