NixOS Root on ZFS: add escape hatch for zfs rollback

Signed-off-by: Maurice Zhou <ja@apvc.uk>
2023-02-14 18:03:29 +01:00
parent b3180fd225
commit 3a93793b53
1 changed files with 5 additions and 3 deletions
--- a/ZFS/configuration-immutable.nix
+++ b/ZFS/configuration-immutable.nix
@@ -244,9 +244,11 @@ in {
  boot.loader.grub.devices =
    (map (diskName: zfsRoot.devNodes + diskName) zfsRoot.bootDevices);
  boot.initrd.postDeviceCommands = ''
-    zpool import -Nf rpool
-    zfs rollback -r rpool/nixos/empty@start
-    zpool export -a
+    if ! grep -q zfs_no_rollback /proc/cmdline; then
+      zpool import -N rpool
+      zfs rollback -r rpool/nixos/empty@start
+      zpool export -a
+    fi
  '';
 }