From e271fc3d0fa170d7e3586273a7039297af430898 Mon Sep 17 00:00:00 2001
From: Adam Lesinski <adam@runloop.ai>
Date: Wed, 24 Sep 2025 16:51:46 -0700
Subject: [PATCH] Add a sanity check to ensure content is written and
 addressable

---
 pkg/snapshot/overlay.go | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/pkg/snapshot/overlay.go b/pkg/snapshot/overlay.go
index 3e8e9212..710f4642 100644
--- a/pkg/snapshot/overlay.go
+++ b/pkg/snapshot/overlay.go
@@ -1456,6 +1456,14 @@ func (o *snapshotter) Compare(ctx context.Context, lower, upper []mount.Mount, o
 	}
 
 	digest := writer.Digest()
+
+	// Sanity check that the content exists
+	_, err = cs.Info(ctx, digest)
+	if err != nil {
+		logrus.Errorln("failed to get info from content store:", err)
+		return ocispec.Descriptor{}, err
+	}
+
 	desc := ocispec.Descriptor{
 		MediaType: config.MediaType,
 		Digest:    digest,
@@ -1467,6 +1475,7 @@ func (o *snapshotter) Compare(ctx context.Context, lower, upper []mount.Mount, o
 			label.OverlayBDBlobFsType: "ext4",
 		},
 	}
+
 	logrus.Infof("Diff created with spec %+v", desc)
 	return desc, nil
 }