My linux config and rc files https://git.sommerfeld.dev/dotfiles/atom/dot_config/containers?h=master 2026-05-29T10:18:13Z 2026-05-29T10:18:13Z sommerfeld sommerfeld@sommerfeld.dev 2026-05-29T10:18:13Z urn:sha1:aabcdc206246aa935790908f2ab7e7edcc88b3b9 fuse-overlayfs is dog-slow on `podman commit` (and noticeably slower than native overlay/btrfs for layer extraction in general) because every read/write round-trips through a FUSE daemon. The kernel overlay driver does not support btrfs as a lowerdir, so on a btrfs root fs the choices were: - fuse-overlayfs (slow, but works) - btrfs (native subvolume + CoW snapshot per layer; fast) Switching graph drivers is destructive — the on-disk layout is incompatible, so a one-time `podman system reset --force` is required. A migration helper script lives at the repo root (gitignored, chezmoiignored) that snapshots stateful containers, exports images and volumes, runs the reset, and restores everything on the new driver. Drops fuse-overlayfs from meta/base.txt — no longer needed and pulls in libfuse3 transitively for nothing. (Flatpak still depends on it for its own sandbox; pacman won't actually uninstall the binary while flatpak is around — that's fine.) VM (nix/vm.nix) is unaffected: it sets its own storage.conf inline with driver=overlay since its rootfs is ext4.