From 466918fbb5e493e682620ec67ccaeb019a37b6a2 Mon Sep 17 00:00:00 2001
From: Nippy <nippy@rp1.hu>
Date: Sat, 18 Jul 2026 10:31:55 +0200
Subject: teszt

---
 raveos-calamares-theme/PKGBUILD                    |  2 +-
 .../modules/calamares-create-snapshots-subvol.sh   | 49 ++++++++++++++++++++++
 .../etc/calamares/modules/partition.conf           | 11 +++++
 .../etc/calamares/modules/shellprocess-loader.conf |  5 +++
 4 files changed, 66 insertions(+), 1 deletion(-)
 create mode 100644 raveos-calamares-theme/etc/calamares/modules/calamares-create-snapshots-subvol.sh

diff --git a/raveos-calamares-theme/PKGBUILD b/raveos-calamares-theme/PKGBUILD
index 4346a1e..63276af 100644
--- a/raveos-calamares-theme/PKGBUILD
+++ b/raveos-calamares-theme/PKGBUILD
@@ -1,7 +1,7 @@
 # Maintainer: AlexC <alexc@alexc.hu>
 pkgname=raveos-calamares-theme
 pkgver=2.0.0
-pkgrel=41
+pkgrel=43
 pkgdesc="RaveOS Calamares Theme"
 arch=('any')
 url="https://git.rp1.hu/RaveOS"
diff --git a/raveos-calamares-theme/etc/calamares/modules/calamares-create-snapshots-subvol.sh b/raveos-calamares-theme/etc/calamares/modules/calamares-create-snapshots-subvol.sh
new file mode 100644
index 0000000..092b7b9
--- /dev/null
+++ b/raveos-calamares-theme/etc/calamares/modules/calamares-create-snapshots-subvol.sh
@@ -0,0 +1,49 @@
+#!/bin/bash
+set -e
+
+echo ">>> [snapshots-subvol] Running INSIDE target system"
+
+# Calamares' partition module ignores our btrfsSubvolumes config here and
+# always creates its own hardcoded set (/home /root /srv /var/cache
+# /var/log /var/tmp as separate subvolumes) -- there's no ".snapshots"
+# subvolume among them, which grub-btrfs/Snapper need. Create it by hand
+# as a proper top-level (subvolid=5) sibling of the other subvolumes,
+# so snapshots of "/" don't recursively include the snapshot store itself.
+
+ROOT_DEV="$(findmnt -no SOURCE / | sed 's/\[.*\]//')"
+ROOT_FS="$(findmnt -no FSTYPE /)"
+
+if [ "$ROOT_FS" != "btrfs" ]; then
+  echo ">>> [snapshots-subvol] Root is not btrfs (${ROOT_FS}), skipping."
+  exit 0
+fi
+
+if [ -d /.snapshots ] && findmnt -no SOURCE /.snapshots >/dev/null 2>&1; then
+  echo ">>> [snapshots-subvol] /.snapshots already mounted, skipping."
+  exit 0
+fi
+
+mkdir -p /mnt/topvol
+mount -o subvolid=5 "${ROOT_DEV}" /mnt/topvol
+
+if [ ! -d /mnt/topvol/@snapshots ]; then
+  btrfs subvolume create /mnt/topvol/@snapshots
+  echo ">>> [snapshots-subvol] Created @snapshots subvolume"
+else
+  echo ">>> [snapshots-subvol] @snapshots subvolume already exists"
+fi
+
+umount /mnt/topvol
+rmdir /mnt/topvol
+
+mkdir -p /.snapshots
+
+ROOT_UUID="$(blkid -s UUID -o value "${ROOT_DEV}")"
+if ! grep -q '/.snapshots' /etc/fstab; then
+  echo "UUID=${ROOT_UUID} /.snapshots btrfs rw,noatime,compress=zstd:3,discard=async,space_cache=v2,subvol=/@snapshots 0 0" >> /etc/fstab
+  echo ">>> [snapshots-subvol] Added /.snapshots to fstab"
+fi
+
+mount /.snapshots
+
+echo ">>> [snapshots-subvol] Done."
diff --git a/raveos-calamares-theme/etc/calamares/modules/partition.conf b/raveos-calamares-theme/etc/calamares/modules/partition.conf
index f73a24e..f67a679 100644
--- a/raveos-calamares-theme/etc/calamares/modules/partition.conf
+++ b/raveos-calamares-theme/etc/calamares/modules/partition.conf
@@ -239,6 +239,17 @@ btrfsSubvolumes:
 #         sectors-per-cluster: 128
 #       size: 100%
 #
+
+# btrfsSubvolumes (above) is only honoured when a custom partitionLayout is
+# in effect -- Calamares' own hardcoded btrfs subvolume defaults are used
+# otherwise, even in plain "erase disk" automatic mode. "unknown" here means
+# the user's actual filesystem choice (ext4 or btrfs) is used, same as the
+# no-custom-layout default -- this just exists to make btrfsSubvolumes apply.
+partitionLayout:
+    - name: "rootfs"
+      filesystem: "unknown"
+      mountPoint: "/"
+      size: 100%
 # There can be any number of partitions, each entry having the following attributes:
 #   - name: filesystem label
 #           and
diff --git a/raveos-calamares-theme/etc/calamares/modules/shellprocess-loader.conf b/raveos-calamares-theme/etc/calamares/modules/shellprocess-loader.conf
index 3b2fde0..13b7dca 100644
--- a/raveos-calamares-theme/etc/calamares/modules/shellprocess-loader.conf
+++ b/raveos-calamares-theme/etc/calamares/modules/shellprocess-loader.conf
@@ -11,6 +11,11 @@ script:
   - command: "install -Dm755 /etc/calamares/modules/calamares-fix-bootentry.sh ${ROOT}/root/calamares-fix-bootentry.sh"
   - command: "arch-chroot ${ROOT} /bin/bash /root/calamares-fix-bootentry.sh"
   - command: "-rm ${ROOT}/root/calamares-fix-bootentry.sh"
+  # 3. Calamares' hardcoded btrfs subvolume layout has no .snapshots --
+  #    create it by hand (needed by grub-btrfs/Snapper).
+  - command: "install -Dm755 /etc/calamares/modules/calamares-create-snapshots-subvol.sh ${ROOT}/root/calamares-create-snapshots-subvol.sh"
+  - command: "arch-chroot ${ROOT} /bin/bash /root/calamares-create-snapshots-subvol.sh"
+  - command: "-rm ${ROOT}/root/calamares-create-snapshots-subvol.sh"
  # - command: "install -Dm755 /etc/calamares/modules/calamares-microcode-fix.sh ${ROOT}/root/calamares-microcode-fix.sh"
 
 
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