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grub updates make me nervious

grub update is throwing warnings
To use the new features provided in this GRUB update, it is recommended
to install it to the MBR or UEFI. Due to potential configuration
incompatibilities, it is advised to run both, installation and generation
of configuration:
      # grub-install ...
      # grub-mkconfig -o /boot/grub/grub.cfg


should I do this before rebooting?

Re: grub updates make me nervious

Reply #1 –
I'm not a grub user, but to prevent 'update stress' I clone my daily driver to a vm first to test it there.

artist

Re: grub updates make me nervious

Reply #3 –
Quote from: mrbrklyn – on
grub update is throwing warnings
To use the new features provided in this GRUB update, it is recommended
to install it to the MBR or UEFI. Due to potential configuration
incompatibilities, it is advised to run both, installation and generation
of configuration:
      # grub-install ...
      # grub-mkconfig -o /boot/grub/grub.cfg


should I do this before rebooting?
The same as every grub-update.

I had never a problem, but as long as you don't use "update-grub", you don't need to install the new version.

Re: grub updates make me nervious

Reply #4 –
Quote from: Artist – on
I'm not a grub user, but to prevent 'update stress' I clone my daily driver to a vm first to test it there.
Why cloning?

Just boot it in KVM with the snapshot-option on, so writes will be cached in memory, but not really written: Nothing can be harmed.

Re: grub updates make me nervious

Reply #5 –
Quote from: Artist – on
I'm not a grub user, but to prevent 'update stress' I clone my daily driver to a vm first to test it there.

artist
Quote from: Artist – on
I'm not a grub user, but to prevent 'update stress' I clone my daily driver to a vm first to test it there.

artist


you are using lilo?

Re: grub updates make me nervious

Reply #6 –
Quote from: Caramon2 – on
Quote from: Artist – on
I'm not a grub user, but to prevent 'update stress' I clone my daily driver to a vm first to test it there.
Why cloning?

Just boot it in KVM with the snapshot-option on, so writes will be cached in memory, but not really written: Nothing can be harmed.

With a clone you have a 100% identical copy of the machine you need to update.

artist

Re: grub updates make me nervious

Reply #7 –
I use qemu-nbd to access a kvm guest's qcow2 disk image and then mount the required partitions and rsync to them from the host.

artist

Re: grub updates make me nervious

Reply #8 –
Quote from: Artist – on
With a clone you have a 100% identical copy of the machine you need to update.
My idea was, to use "sudo pacman -Syuw", then let boot the system itself in kvm with snapshot=on, do "sudo pacman -Su" and when it seems to be ok, shut down the vm an do "sudo pacman -Su" in real.
 
No need to clone the whole system first: that's a waste of time and unnecessary writes on the ssd.

Like this (+ Attachment):
Code: [Select]
#!/bin/bash
if [ $# == 0 ];then echo "vms /dev/sd? …";exit;fi
cl="qemu-system-x86_64 -nodefaults -enable-kvm -cpu host -smp cores=4 -m 4G -vga none -device virtio-vga-gl -display sdl,gl=on -audio sdl,model=hda -boot menu=on"
while [ $# -gt 0 ]
do cl=$cl" -drive file=/dev/sd$1,if=virtio,aio=io_uring,snapshot=on,format=raw"
shift;done
$cl
Edit: "-m 4G" could be a little low for that. 8G should be enough.

Edit2: You have to belong to "disk" or use "sudo qemu-system-x86_64 -run-with user=$USER …"

Re: grub updates make me nervious

Reply #9 –
grub updates quite often. I don't know if they're fixing bugs or adding features, but with that frequency either one sounds bad. And then that one time they broke stuff, and ever since then these warnings. It's the GNU way of development, I guess.

I'm using syslinux on my main machine. It might appear dead/obsolete/fringe looking at online resources, but it works. Installed size ~4Mb (compared to grub's almost 36). No idea about features. I just need to boot up my Artix.

While syslinux supports UEFI with some limitations, I'm using GPT. lilo only supports GPT, I believe.

Looks like lilo development was officially ended in 2015, while syslinux had its last update in 2014.

Re: grub updates make me nervious

Reply #10 –
A more modern alternative is rEFInd, which is available as refind-artix - with additional drivers and Artix logo - in the omniverse repo.

artist

Re: grub updates make me nervious

Reply #11 –
Not to be rude or cruel, but I am so not interested in any of this.  I want the boot loader to do a  very simple thing... find vmlinuz  or the boot image and read it and execute it:  ie: start the system.


I don''t need plymouth or a splash page, or an encrypted /boot partition or anything.  I just need to turn the key and start the engine and to do that as infrequently as possible.

As for updates, it would be OK is pacman could roll back an update.
 

Re: grub updates make me nervious

Reply #12 –
Quote from: Artist – on
A more modern alternative is rEFInd, which is available as refind-artix - with additional drivers and Artix logo - in the omniverse repo.

artist


I was looking this over last night and it sounds as if you are doing multiple books it can be quite a useful Swiss army knife.