diff --git a/common/snigdhaos-libs/check-snapshot-boot b/common/snigdhaos-libs/check-snapshot-boot
new file mode 100644
index 00000000..c6e16221
--- /dev/null
+++ b/common/snigdhaos-libs/check-snapshot-boot
@@ -0,0 +1,5 @@
+#!/bin/bash
+if grep -qE 'subvol=@/.snapshots/[0-9]+/snapshot' /proc/cmdline; then
+    exit 0
+fi
+exit 1