It will create a boot environment prefixed with pacmanhook with zectl before each kernel upgrade. By default, it keeps only 1 boot environment, each kernel upgrade will overwrite previous boot environment.
$ sudo pacman -Syu
:: Synchronizing package databases...
core is up to date
extra is up to date
community is up to date
archzfs is up to date
multilib is up to date
:: Starting full system upgrade...
resolving dependencies...
looking for conflicting packages...
Packages (1) linux-lts-5.4.39-1
Total Installed Size: 73.34 MiB
Net Upgrade Size: -0.01 MiB
:: Proceed with installation? [Y/n] Y
(1/1) checking keys in keyring [------------------------] 100%
(1/1) checking package integrity [------------------------] 100%
(1/1) loading package files [------------------------] 100%
(1/1) checking for file conflicts [------------------------] 100%
(1/1) checking available disk space [------------------------] 100%
:: Running pre-transaction hooks...
(1/3) Create a boot environment
• Destroyed pacmanhook-20200512T154713
• Created pacmanhook-20200512T154826
(2/3) Removing linux initcpios...
(3/3) Remove DKMS modules
:: Processing package changes...
(1/1) upgrading linux-lts [------------------------] 100%
:: Running post-transaction hooks...
...Install aur package zectl-pacman-hook.
To keep more than 1 boot environment, use:
zectl set pacmanhook-prunecount=5
Be aware of your /boot size limitation.
To know ~ max prunecount you could set, try:
boot_size=$(du /boot | awk '{print $1}')
efi_size=$(df /efi --output=avail | sed '1d')
echo "$efi_size / $boot_size" | bcTo disable the hook, use:
zectl set pacmanhook="no"
git clone https://github.com/eoli3n/zectl-pacman-hook
cd zectl-pacman-hook
makepkg -c
makepkg -si
React
Typescript
Django
Laravel
Facebook
Microsoft
Google
Alibaba
D3
Tencent