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+# Resizing a Google Cloud NetApp Volumes volume - GSP1310
+
+## Overview
+
+Google Cloud NetApp Volumes supports changing a file volume's capacity while clients keep the NFS share mounted. This lab demonstrates how capacity affects available throughput for a Premium service-level volume: approximately 64 MiB/s at 1 TiB, 128 MiB/s at 2 TiB, and 32 MiB/s at 512 GiB under the lab's benchmark conditions.
+
+### What you'll do
+
+- Mount the preprovisioned NetApp volume on a Linux VM.
+- Measure baseline write throughput with fio.
+- Grow the volume to 2048 GiB, verify capacity, and retest.
+- Shrink the volume to 512 GiB, verify capacity, and retest.
+
+## Setup and requirements
+
+### Before you click the Start Lab button
+
+Open the [official GSP1310 lab](https://www.skills.google/focuses/124382?parent=catalog) in a private browser. Start the lab and sign in with **only the temporary account provided by the lab**. Never share credentials, private project IDs, or access tokens. The lab provisions volume1 and vm1. Do not create replacement resources.
+
+### Activate Cloud Shell
+
+Open Cloud Shell, authorize it, and confirm the selected project. Discover the VM zone and NetApp volume location rather than assuming a region:
+
+```bash
+gcloud config get-value project
+gcloud compute instances list --filter='name=vm1' --format='table(name,zone,status)'
+gcloud netapp volumes list --format='table(name,capacityGib,state)'
+```
+
+Use the location segment of the volume resource path in later commands.
+
+## Task 1. Mount the volume
+
+In the console, open NetApp Volumes, select volume1, and inspect **Mount instructions**. Record the unique NFS export (an IP address and share path). In a separate terminal, connect to vm1 using the Compute Engine SSH button, then install NFS utilities and mount the share:
+
+```bash
+sudo apt-get update -qq
+sudo apt-get install -y nfs-common
+sudo mkdir -p /share1
+sudo mount -t nfs -o rw,hard,rsize=65536,wsize=65536,vers=3,tcp '<NFS_IP>:/share1' /share1
+df -h /share1
+```
+
+Replace the placeholder with the **exact export from your lab**. Do not guess the IP. If already mounted, skip the mount command and verify the existing mount. The expected initial capacity is approximately 1 TiB.
+
+### Test completed task
+
+Click **Check my progress** for Mount the volume (20 points).
+
+## Task 2. Test the performance
+
+The Premium service level's approximate maximum throughput is proportional to provisioned volume capacity. On vm1, run the official fio write benchmark against the mounted share:
+
+```bash
+sudo fio --directory=/share1 --ioengine=libaio --rw=write --bs=64k --iodepth=24 --size=50g --fallocate=none --direct=1 --runtime=9000 --time_based --ramp_time=5 --numjobs=8 --name=netappvolumes
+```
+
+The official walkthrough asks you to stop this test with Ctrl+C after observing the write throughput. At 1024 GiB, the approximate upper bound is 64 MiB/s. fio generates workload files and consumes I/O; only run it in the temporary lab share. The Quick script uses a bounded 10-second, smaller-data sample to avoid a 9000-second blocking benchmark. This Task has no separate grader checkpoint.
+
+## Task 3. Grow the Google Cloud NetApp Volumes capacity
+
+Open NetApp Volumes → Volumes → volume1 → Edit. Set the capacity to **2048 GiB** and save. Alternatively, from Cloud Shell, substitute the discovered volume location:
+
+```bash
+gcloud netapp volumes update volume1 --location='<VOLUME_LOCATION>' --capacity=2048
+gcloud netapp volumes describe volume1 --location='<VOLUME_LOCATION>' --format='value(capacityGib)'
+```
+
+Wait for the update to finish. On vm1, verify the share shows the new size without unmounting:
+
+```bash
+df -h /share1
+```
+
+Repeat the fio benchmark from Task 2, then stop it after observing the result. A 2 TiB Premium volume has an approximate maximum of 128 MiB/s in this lab.
+
+### Test completed task
+
+Click **Check my progress** for Grow the volume capacity (40 points).
+
+## Task 4. Shrink the Google Cloud NetApp Volumes capacity
+
+Open volume1 → Edit and set the capacity to **512 GiB**. The volume must contain less data than the target size; do not shrink a production volume without checking actual usage. The lab uses a temporary volume.
+
+```bash
+gcloud netapp volumes update volume1 --location='<VOLUME_LOCATION>' --capacity=512
+gcloud netapp volumes describe volume1 --location='<VOLUME_LOCATION>' --format='value(capacityGib)'
+```
+
+On vm1, verify the capacity and run the same fio benchmark again:
+
+```bash
+df -h /share1
+sudo fio --directory=/share1 --ioengine=libaio --rw=write --bs=64k --iodepth=24 --size=50g --fallocate=none --direct=1 --runtime=9000 --time_based --ramp_time=5 --numjobs=8 --name=netappvolumes
+```
+
+Stop fio with Ctrl+C after observing throughput. The approximate maximum at 512 GiB is 32 MiB/s.
+
+### Test completed task
+
+Click **Check my progress** for Shrink the volume capacity (40 points). The three graded checkpoints total 100 points; this article does not claim grader PASS.
+
+---
+
+## Solution of Lab
+
+### Quick
+
+Once the Draft PR has merged into main, use exactly these two commands in an authorized lab Cloud Shell. The URL intentionally targets main and is unavailable before merge:
+
+```bash
+curl -LO https://raw.githubusercontent.com/ePlus-DEV/storage/refs/heads/main/labs/GSP1310/lab.sh
+source lab.sh
+```
+
+The script detects the current project, volume location, VM zone, and NFS export; mounts the share; runs bounded fio samples; and performs both requested capacity changes. If the export cannot be discovered, it prompts for the export shown in the lab's Mount instructions. FORCE_COLOR=1 enables colored logs through tee; NO_COLOR takes priority.
+
+### Manual
+
+Chưa tìm thấy video YouTube hướng dẫn thủ công đã xác minh cho lab này.
+
+Use the four manual Task sections above to complete the lab without a video.
+
+## Sources and verification
+
+- [Official Google Skills GSP1310 task instructions](https://www.skills.google/focuses/124382?parent=catalog)
+- [Google Cloud NetApp Volumes update command](https://docs.cloud.google.com/sdk/gcloud/reference/netapp/volumes/update)
+- [Google Cloud NetApp Volumes volume metadata](https://docs.cloud.google.com/netapp/volumes/docs/reference/rest/v1/projects.locations.volumes)
+
+**Status:** static validated only; runtime/grader unverified. No unverified screenshots or YouTube links are embedded. This Markdown is prepared for Hashnode review; it has not been published.
diff --git a/labs/GSP1310/lab.sh b/labs/GSP1310/lab.sh
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+#!/usr/bin/env bash
+# Copyright (c) 2026 ePlus.DEV | Unlicense
+set -Eeuo pipefail
+if [[ -v NO_COLOR ]]; then BLUE='' GREEN='' YELLOW='' RESET=''
+elif [[ -t 1 || "${FORCE_COLOR:-0}" == 1 ]]; then
+  BLUE=$'\033[1;36m'; GREEN=$'\033[1;32m'; YELLOW=$'\033[1;33m'; RESET=$'\033[0m'
+else BLUE='' GREEN='' YELLOW='' RESET=''; fi
+info() { printf '%s%s%s\n' "$BLUE" "$*" "$RESET"; }
+ok() { printf '%s%s%s\n' "$GREEN" "$*" "$RESET"; }
+warn() { printf '%s%s%s\n' "$YELLOW" "$*" "$RESET"; }
+trap 'warn "Failed at line $LINENO (exit $?)."' ERR
+printf '%s\n' "${BLUE}ePlus.DEV – Starting Execution${RESET}" 'GSP1310 — NetApp Volumes resizing (static validated only; runtime/grader unverified)'
+for cmd in gcloud grep sed head; do command -v "$cmd" >/dev/null || { warn "Missing $cmd"; exit 1; }; done
+PROJECT_ID="${PROJECT_ID:-$(gcloud config get-value project 2>/dev/null)}"
+[[ -n "$PROJECT_ID" && "$PROJECT_ID" != '(unset)' ]] || { warn 'Choose an authorized lab project'; exit 1; }
+VM_NAME=vm1
+VOLUME_NAME=volume1
+ZONE="${ZONE:-$(gcloud compute instances list --project="$PROJECT_ID" --filter="name=$VM_NAME" --format='value(zone.basename())' | head -n 1)}"
+[[ -n "$ZONE" ]] || { warn 'Preprovisioned vm1 not found'; exit 1; }
+VOLUME_PATH="$(gcloud netapp volumes list --project="$PROJECT_ID" --format='value(name)' | grep '/volumes/volume1$' | head -n 1 || true)"
+[[ "$VOLUME_PATH" =~ /locations/([^/]+)/volumes/volume1$ ]] || { warn 'Preprovisioned volume1 not found'; exit 1; }
+LOCATION="${BASH_REMATCH[1]}"
+NFS_EXPORT="${NFS_EXPORT:-$(gcloud netapp volumes describe "$VOLUME_NAME" --project="$PROJECT_ID" --location="$LOCATION" --format='value(mountOptions[0].exportFull)' 2>/dev/null || true)}"
+if [[ -z "$NFS_EXPORT" ]]; then
+  if [[ -t 0 ]]; then read -r -p 'NFS export from volume1 Mount instructions (IP:/share): ' NFS_EXPORT; fi
+fi
+[[ "$NFS_EXPORT" =~ ^[0-9.]+:/[^[:space:]]+$ ]] || { warn 'Missing/invalid NFS export. Set NFS_EXPORT=IP:/share'; exit 1; }
+remote() {
+  local script="$1" attempt
+  for attempt in 1 2 3; do
+    if gcloud compute ssh "$VM_NAME" --project="$PROJECT_ID" --zone="$ZONE" --quiet --command="bash -lc $(printf '%q' "$script")"; then return 0; fi
+    warn "SSH retry $attempt/3"; sleep 8
+  done
+  return 1
+}
+wait_capacity() {
+  local wanted="$1" actual attempt
+  for attempt in {1..24}; do
+    actual="$(gcloud netapp volumes describe "$VOLUME_NAME" --project="$PROJECT_ID" --location="$LOCATION" --format='value(capacityGib)' 2>/dev/null || true)"
+    [[ "$actual" == "$wanted" ]] && return 0
+    sleep 10
+  done
+  warn "Volume did not reach $wanted GiB (last: $actual)"; return 1
+}
+benchmark() {
+  local label="$1"
+  info "Performance sample: $label (10 seconds, bounded; not a full 9000-second test)"
+  remote "set -e; if ! command -v fio >/dev/null; then sudo apt-get update -qq; sudo apt-get install -y -qq fio; fi; timeout 25s sudo fio --directory=/share1 --ioengine=libaio --rw=write --bs=64k --iodepth=24 --size=1g --fallocate=none --direct=1 --runtime=10 --time_based --ramp_time=2 --numjobs=2 --name=netappvolumes || test \"\$?\" -eq 124"
+}
+info '== Task 1/4 — Mount preprovisioned NetApp volume on vm1 =='
+remote "set -e; command -v mount.nfs >/dev/null || { sudo apt-get update -qq; sudo apt-get install -y -qq nfs-common; }; sudo mkdir -p /share1; if ! mountpoint -q /share1; then sudo mount -t nfs -o rw,hard,rsize=65536,wsize=65536,vers=3,tcp '$NFS_EXPORT' /share1; fi; df -h /share1"
+ok 'Volume mounted or already mounted'
+info '== Task 2/4 — Baseline fio performance =='
+benchmark 'initial capacity'
+info '== Task 3/4 — Grow volume1 to 2048 GiB and verify =='
+gcloud netapp volumes update "$VOLUME_NAME" --project="$PROJECT_ID" --location="$LOCATION" --capacity=2048 --quiet
+wait_capacity 2048
+remote 'df -h /share1'
+benchmark '2048 GiB'
+ok 'Volume capacity 2048 GiB verified'
+info '== Task 4/4 — Shrink volume1 to 512 GiB and verify =='
+gcloud netapp volumes update "$VOLUME_NAME" --project="$PROJECT_ID" --location="$LOCATION" --capacity=512 --quiet
+wait_capacity 512
+remote 'df -h /share1'
+benchmark '512 GiB'
+ok 'Volume capacity 512 GiB verified'
+warn 'static validated only; runtime/grader unverified. Use Check my progress for the 3 official checkpoints.'