archangel/custom/grub-zfs-snap, branch main Arch Linux installer ISO — ZFS-on-root or BTRFS, doubles as rescue disk https://git.cjennings.net/archangel/atom?h=main 2026-01-23T05:21:18+00:00 Replace GRUB with ZFSBootMenu bootloader 2026-01-23T05:21:18+00:00 Craig Jennings c@cjennings.net 2026-01-23T05:21:18+00:00 urn:sha1:3e70ba84c15d69f48f436239e7f0ac9628464c55 This is a major change that replaces the GRUB bootloader with ZFSBootMenu, providing native ZFS boot environment support. Key changes: - EFI partition reduced from 1GB to 512MB (only holds ZFSBootMenu) - EFI now mounts at /efi instead of /boot - Kernel and initramfs live on ZFS root (enables snapshot boot with matching kernel) - Downloads pre-built ZFSBootMenu EFI binary from get.zfsbootmenu.org - Creates EFI boot entries for all disks in multi-disk configurations - Syncs ZFSBootMenu to all EFI partitions for redundancy - Sets org.zfsbootmenu:commandline on zroot/ROOT for kernel cmdline inheritance - Sets bootfs pool property for default boot environment - AMD GPU workarounds (pg_mask, cwsr_enable) added to kernel cmdline when AMD detected Deleted GRUB snapshot tooling (no longer needed): - custom/grub-zfs-snap - custom/40_zfs_snapshots - custom/zz-grub-zfs-snap.hook - custom/zfs-snap-prune Updated helper scripts: - zfssnapshot: removed grub-zfs-snap call, shows ZFSBootMenu tip - zfsrollback: removed grub-zfs-snap call, notes auto-detection Tested configurations: - Single disk installation - 2-disk mirror (mirror-0) - 3-disk RAIDZ1 (raidz1-0) - All boot correctly with ZFSBootMenu Fix grub-zfs-snap command substitution syntax error 2026-01-19T15:11:00+00:00 Craig Jennings c@cjennings.net 2026-01-19T15:11:00+00:00 urn:sha1:23f25246c8470866c2461a5bd8e6c720280a1996 Remove backslash escape from grub-probe command substitution so it executes at config generation time instead of writing the literal string "$(grub-probe ...)" into grub.cfg. GRUB's scripting language doesn't support bash-style $() command substitution, causing syntax errors on boot. Add grub-zfs-snap for ZFS snapshot boot entries 2026-01-18T16:55:18+00:00 Craig Jennings c@cjennings.net 2026-01-18T16:55:18+00:00 urn:sha1:6505511f2e6b43a37570fc840f6d2851c7cc170c Add ability to boot into ZFS snapshots directly from GRUB menu: - grub-zfs-snap: generates GRUB submenu entries for recent snapshots - 40_zfs_snapshots: GRUB generator script installed to /etc/grub.d/ - zz-grub-zfs-snap.hook: pacman hook for automatic GRUB regeneration The GRUB menu automatically updates after kernel/ZFS package changes. Up to 10 most recent snapshots appear in a "ZFS Snapshots" submenu.