I’m Younes El Alami.

How a 2TB NVMe running Windows, Arch, and Void ended up with nine partitions, one decision at a time

What btrfs metadata is, why it can fill before data does, when to run balance, and what the usage filter actually does

Why df, du, and ncdu give different numbers on btrfs — orphaned snapshots, Docker's invisible footprint, and how to actually measure btrfs disk usage

How the btrfs subvolume layout on p5 was designed — the decisions behind each subvolume and the tradeoffs of nodatacow

Why ~/.cache is a separate nodatacow btrfs subvolume and how the managed-* sentinel pattern makes cache paths portable across machines without a btrfs pool

What actually requires ongoing attention in a Void + Arch dual-boot setup — kernel filename changes, snapshot strategy, and the shared Docker risk

How two separate btrfs partitions were consolidated into one 887G pool — subvolume migration with btrfs send/receive, partition deletion, and live online resize

How GRUB is shared across Void and Arch — a dedicated ext4 /boot, one distro owning GRUB, and the symlink trap that breaks 40_custom entries

The partition table on a 2TB NVMe running Void Linux, Arch, and Windows 11 — what the layout is and why each decision was made

Installing Void Linux manually via chroot — why void-installer falls short for complex layouts and how to do it right, including the dracut btrfs trap

Why there is no swap partition on this machine — zram with zstd compression handles swap at memory speed, and the math behind why it works

What I've learned after years of following the Arch Way philosophy