If it failed to delete the blob cache, residual cache may occur.

[shitou12345678]

If it failed to delete the blob cache, residual cache may occur. Is there any other way to handle the problem?

	if info.Kind == snapshots.KindCommitted {
		blobDigest := info.Labels[snpkg.TargetLayerDigestLabel]
		go func() {
			if err := o.fs.RemoveCache(blobDigest); err != nil {
				log.L.WithError(err).Errorf("Failed to remove cache %s", blobDigest)
			}
		}()
	}

[imeoer]

@shitou12345678 Maybe we need to remove cache synchronously? cc @changweige

[changweige]

Generally, it can hardly fail to delete blob cache stuff. Can you see the particular error when it failed? Even we migrate a synchronously way to remove blob cache, it still fails.

[shitou12345678]

In the nydus component, i haven't had such a problem. But in fact, deleting the cache and the kernel calling the inuse interface may occur the error ”device or resource busy”, so it may lead to residual.