Cri File System Tools Link

If your cluster uses containerd, ctr provides direct access to namespaces and snapshots.

Filesystem link operations:

ctr namespace ls                           # List namespaces (e.g., k8s.io)
ctr -n k8s.io snapshot ls                  # Show all snapshots (image layers)
ctr -n k8s.io snapshot mount <key> /mnt    # Mount a snapshot to inspect

Why linking matters here: Snapshots are immutable directories linked together via overlayfs. Each snapshot has a "parent" link to the previous layer. cri file system tools link

cri-tools extract game.cpk --follow-links --path "menu/bg.tex" If your cluster uses containerd, ctr provides direct

Containers leak storage. Every Cri command that pulls an image, creates a layer, or writes logs consumes inodes. To diagnose "No space left on device" (ENOSPC) in Kubernetes, you must trace the link between the pod and its storage: creates a layer

# Find the top 10 largest container rootfs directories
du -sh /var/lib/containerd/io.containerd.snapshotter.v1.overlayfs/snapshots/*/fs | sort -h