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zfs as root with luks on arch linux and the small trouble after upgrading the kernel

Everytime the kernel gets updated, my system only reaches the busybox afterwards.
Currently, I have no idea why this happens exactly. But at least, I know how to handle it.
The zfs module is loaded, so all you need to do is to execute

zpool import -f 
, followed by an
zpool export 
.
It looks like there is a problem with exporting the pool while rebooting, or maybe an error while importing. It is marked as "not exported correctly", that is why booting fails. After the two commands from above, you can enter
reboot
and everything should be fine again.

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LVM on LUKS with GPT on an HP 2530p

So, this is a short story telling about the journey of an arch linux installation on an HP 2530p.
The mission was clear, <https://wiki.archlinux.org/index.php/GPT" title="arch linux gpt">GPT, LVM and LUKS. The problem was the BIOS in the HP 2530p.
To keep it short, don't trust the documents, simple install a hybrid gpt/mbr), or follow my howto.
The so called documented UEFI boot is only working with windows but not with other UEFI systems. If you simple install a GPT without a hybrid MBR, you won't get a working system disk.

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