Ensure content is fetched on

Signed-off-by: apostasie <[email protected]>

pkg/cmd/image/convert.go

@@ -44,6 +44,7 @@ import (
 
 	"github.com/containerd/nerdctl/v2/pkg/api/types"
 	"github.com/containerd/nerdctl/v2/pkg/clientutil"
+	"github.com/containerd/nerdctl/v2/pkg/imgutil"
 	converterutil "github.com/containerd/nerdctl/v2/pkg/imgutil/converter"
 	"github.com/containerd/nerdctl/v2/pkg/platformutil"
 	"github.com/containerd/nerdctl/v2/pkg/referenceutil"
@@ -75,6 +76,14 @@ func Convert(ctx context.Context, client *containerd.Client, srcRawRef, targetRa
 	}
 	convertOpts = append(convertOpts, converter.WithPlatform(platMC))
 
+	imageService := client.ImageService()
+	img, err := imageService.Get(ctx, srcRawRef)
+	// Ensure all the layers are here: https://github.com/containerd/nerdctl/issues/3425
+	err = imgutil.EnsureAllContent(ctx, client, srcRawRef, img.Target, "", options.GOptions)
+	if err != nil {
+		return err
+	}
+
 	estargz := options.Estargz
 	zstd := options.Zstd
 	zstdchunked := options.ZstdChunked