Temporary postpone upgrading OpenZFS to 2.2.0 – 2.2.1 when upgrading to Proxmox 8.1

Add the following pinning rule for APT to pin proxmox to the 2.1.x branch of OpenZFS.

cat << EOF > /etc/apt/preferences.d/zfs
# Hold back on upgrading to OpenZFS 2.2.* due to a bug currently being investigated in 2.1.4*, 2.2.1* – 2023-11-25
Package: zfs-initramfs zfs-zed zfsutils-linux libzfs4linux libzpool5linux
Pin: version 2.1.13*
Pin-Priority: 900

Remember to remove the rule when Proxmox confirms the issues reported (and suspected) plaguing OpenZFS releases 2.2.0 – 2.2.1 are confirmed resolved.

Edit 2023-12-01: A fix has been released. https://www.phoronix.com/news/OpenZFS-2.2.2-Released

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Install ifupdown2 on Debian

Install ifupdown2 from proxmox no-subscription repository for Debian 64bit

apt install --yes lsb-release wget curl

wget https://enterprise.proxmox.com/debian/proxmox-release-$(lsb_release -sc).gpg --output-document=/etc/apt/trusted.gpg.d/proxmox-release-$(lsb_release -sc).gpg

echo "deb [arch=amd64 signedby=/etc/apt/trusted.gpg.d/proxmox-release-$(lsb_release -sc).gpg] http://download.proxmox.com/debian/pve $(lsb_release -sc) pve-no-subscription" > /etc/apt/sources.list.d/pve.list

echo "Package: *\nPin: origin \"download.proxmox.com\"\nPin-Priority: 50\n\nPackage: ifupdown2\nPin: origin \"download.proxmox.com\"\nPin-Priority: 500" > /etc/apt/preferences.d/pve

apt update

apt list --upgradeable

apt install --yes ethtool bridge-utils python3-mako ifupdown2