k8s/bootstrap/phase3-forgejo/forgejo-values.yaml

@@ -161,9 +161,9 @@ ingress:
 # The database was never the bottleneck. A real action_runner UPDATE measured
 # 2.133ms with zero lock waits, so this is CPU starvation in Gitea itself.
 #
-# requests.cpu rises to 750m because a request below real usage earns the pod
+# requests.cpu stays 200m and limits.cpu stays 1000m. The 3000m limit was a
-# little scheduling weight during contention. limits.cpu rises to 3000m
+# temporary measure while the Actions stall was diagnosed; the real fix landed
-# because diff computation is bursty and needs room to run without throttling.
+# elsewhere, so the limit is back to the original.
 #
 # Caution: this pod runs on talos-cp-3, a control-plane node. If Gitea
 # throttles again at 1000m, move the workload off the control plane rather

k8s/infra/longhorn/disk-scan-job.yaml

@@ -0,0 +1,90 @@
+# One-shot destructive health scan of a candidate Longhorn disk.
+#
+# WHY THIS IS A MANUAL JOB AND NOT AN ARGOCD HOOK
+#   It writes over the entire raw device. An ArgoCD PostSync hook would run it
+#   on every sync and destroy whatever the volume holds. Apply it by hand,
+#   once, on a disk that has no partitions and no mounts.
+#
+# WHY NOT TALOS
+#   Talos declares disks by mounting them (machine.disks in the machine
+#   config). It has no primitive for "run this command on the host", so a scan
+#   cannot live in the Talos config. This Job is the IaC-correct home.
+#
+# ORDER OF OPERATIONS
+#   1. Scan the raw device with this Job        <- the disk must be UNMOUNTED
+#   2. If it passes, add the disk to terraform.tfvars.local `longhorn_disks`
+#      with device /dev/disk/by-id/<wwid> and run `make apply-cp`
+#   3. Register it with Longhorn via the pattern in longhorn-add-disks-job.yaml
+#
+# What it does
+#   fio writes a CRC32C-verified pattern across the whole device, then reads
+#   every block back and compares. Any unreadable or mismatched sector fails
+#   the Job. This is a full write and read pass, not a sample.
+#
+# Expected duration
+#   2 TB on a 5400 rpm 2.5" drive at roughly 90 MB/s is about 6 h to write and
+#   6 h to verify. Budget 12 hours. Check progress with:
+#     kubectl -n llm-io logs job/disk-scan-cp1-sdb -f
+apiVersion: batch/v1
+kind: Job
+metadata:
+  name: disk-scan-cp1-sdb
+  namespace: llm-io
+  labels:
+    app: disk-scan
+spec:
+  backoffLimit: 0
+  # Do not let a stuck scan retry silently.
+  template:
+    metadata:
+      labels:
+        app: disk-scan
+    spec:
+      restartPolicy: Never
+      nodeSelector:
+        kubernetes.io/hostname: talos-cp-1
+      containers:
+        - name: scan
+          image: ubuntu:22.04
+          securityContext:
+            privileged: true
+          command:
+            - /bin/bash
+            - -c
+            - |
+              set -euo pipefail
+              apt-get update -qq
+              apt-get install -y -qq smartmontools fio
+
+              echo "=== device identity ==="
+              smartctl -i /dev/sdb | tail -12
+
+              echo "=== SMART before ==="
+              smartctl -H /dev/sdb | tail -2
+
+              echo "=== full write + verify (destructive) ==="
+              fio --name=devverify \
+                  --filename=/dev/sdb \
+                  --rw=write \
+                  --bs=1M \
+                  --iodepth=4 \
+                  --ioengine=libaio \
+                  --direct=1 \
+                  --verify=crc32c \
+                  --do_verify=1 \
+                  --verify_fatal=1 \
+                  --eta=always \
+                  --output-format=normal
+
+              echo "=== SMART after ==="
+              smartctl -H /dev/sdb | tail -2
+              smartctl -A /dev/sdb | awk '/Reallocated_Sector|Current_Pending|Offline_Uncorrect|UDMA_CRC/{print "  "$0}'
+
+              echo "=== SCAN PASSED ==="
+          volumeMounts:
+            - name: dev
+              mountPath: /dev
+      volumes:
+        - name: dev
+          hostPath:
+            path: /dev