Snapshots & Sync Guide

# Set service name (default: stable)
export SERVICE_NAME=stable

# Stop the running node
sudo systemctl stop ${SERVICE_NAME}

# Verify it's stopped
sudo systemctl status ${SERVICE_NAME}

# Create backup directory
mkdir -p ~/stable-backup

# Backup current state (optional, requires significant space)
cp -r ~/.stabled/data ~/stable-backup/

# Install dependencies
sudo apt install -y wget lz4 pv

# Create snapshot directory
mkdir -p ~/snapshot
cd ~/snapshot

# Download pruned snapshot with progress
wget -c https://stable-snapshot.s3.eu-central-1.amazonaws.com/snapshot.tar.lz4

# Alternative: Download with resume support
curl -C - -o snapshot.tar.lz4 https://stable-snapshot.s3.eu-central-1.amazonaws.com/snapshot.tar.lz4

# Remove old data
rm -rf ~/.stabled/data/*

# Extract snapshot with progress indicator
pv snapshot.tar.lz4 | tar -I lz4 -xf - -C ~/.stabled/

# Alternative extraction without pv
tar -I lz4 -xvf snapshot.tar.lz4 -C ~/.stabled/

# Clean up
rm snapshot.tar.lz4

# Start the node
sudo systemctl start ${SERVICE_NAME}

# Check status
sudo systemctl status ${SERVICE_NAME}

# Monitor logs
sudo journalctl -u stabled -f

# Stop node
sudo systemctl stop ${SERVICE_NAME}

# Install dependencies
sudo apt install -y wget zstd pv

# Check available disk space (need 2x snapshot size)
df -h ~/.stabled

# Create working directory
mkdir -p ~/snapshot
cd ~/snapshot

# Download archive snapshot
wget -c https://stable-snapshot.s3.eu-central-1.amazonaws.com/archive.tar.zst

# Clear old data
rm -rf ~/.stabled/data/*

# Extract with high memory for better performance
pv archive.tar.zst | zstd -d --long=31 --memory=2048MB -c - | tar -xf - -C ~/.stabled/

# Alternative: Standard extraction
zstd -d --long=31 archive.tar.zst -c | tar -xvf - -C ~/.stabled/

# Clean up
rm archive.tar.zst

# Start service
sudo systemctl start ${SERVICE_NAME}

# Verify sync status
curl -s localhost:26657/status | jq '.result.sync_info'

# Stop node
sudo systemctl stop ${SERVICE_NAME}

# Create snapshot archive
cd ~/.stabled
tar -cf - data/ | lz4 -9 > ~/stable-snapshot-$(date +%Y%m%d).tar.lz4

# Create checksum
sha256sum ~/stable-snapshot-*.tar.lz4 > checksums.txt

# Restart node
sudo systemctl start ${SERVICE_NAME}

#!/bin/bash
# snapshot.sh - Automated snapshot creation

# Configuration
SNAPSHOT_DIR="/var/snapshots"
STABLED_HOME="$HOME/.stabled"
KEEP_DAYS=7

# Create snapshot directory
mkdir -p $SNAPSHOT_DIR

# Stop node
sudo systemctl stop ${SERVICE_NAME}

# Create snapshot
SNAPSHOT_NAME="stable-snapshot-$(date +%Y%m%d-%H%M%S).tar.lz4"
tar -cf - -C $STABLED_HOME data/ | lz4 -9 > $SNAPSHOT_DIR/$SNAPSHOT_NAME

# Generate metadata
cat > $SNAPSHOT_DIR/latest.json <<EOF
{
  "filename": "$SNAPSHOT_NAME",
  "height": "$(cat $STABLED_HOME/data/cs.wal/wal | grep height | tail -1 | awk '{print $2}' | tr -d ',')",
  "timestamp": "$(date -u +%Y-%m-%dT%H:%M:%SZ)",
  "size": "$(du -h $SNAPSHOT_DIR/$SNAPSHOT_NAME | awk '{print $1}')",
  "checksum": "$(sha256sum $SNAPSHOT_DIR/$SNAPSHOT_NAME | awk '{print $1}')"
}
EOF

# Clean old snapshots
find $SNAPSHOT_DIR -name "stable-snapshot-*.tar.lz4" -mtime +$KEEP_DAYS -delete

# Restart node
sudo systemctl start ${SERVICE_NAME}

echo "Snapshot created: $SNAPSHOT_DIR/$SNAPSHOT_NAME"

# Add to crontab (weekly on Sunday at 2 AM)
(crontab -l ; echo "0 2 * * 0 /usr/local/bin/snapshot.sh") | crontab -

# Check snapshot checksum
sha256sum -c checksums.txt

# Verify extraction
tar -I lz4 -tvf snapshot.tar.lz4 | head -20

# Test snapshot size
tar -I lz4 -tvf snapshot.tar.lz4 | wc -l

# Check disk space
df -h

# Verify file integrity
lz4 -t snapshot.tar.lz4

# Try alternative extraction
lz4 -d snapshot.tar.lz4 snapshot.tar
tar -xvf snapshot.tar -C ~/.stabled/

# Check permissions
ls -la ~/.stabled/data/

# Fix permissions
sudo chown -R $USER:$USER ~/.stabled/

# Verify genesis file
sha256sum ~/.stabled/config/genesis.json

# Reset and try again
stabled comet unsafe-reset-all
# Then restore snapshot

# Try different RPC servers
# Update config.toml with alternative RPCs

# Increase chunk fetchers
sed -i 's/chunk_fetchers = .*/chunk_fetchers = 8/' ~/.stabled/config/config.toml

# Clear and retry
stabled comet unsafe-reset-all --keep-addr-book

# Use aria2 for parallel downloads
aria2c -x 16 -s 16 https://stable-snapshot.s3.eu-central-1.amazonaws.com/snapshot.tar.lz4

# Use wget with compression
wget --header="Accept-Encoding: gzip" -c URL

# Resume interrupted downloads
curl -C - -o snapshot.tar.lz4 URL

# Use parallel extraction
pigz -d -c snapshot.tar.gz | tar -xf - -C ~/.stabled/

# Monitor extraction progress
pv snapshot.tar.lz4 | tar -I lz4 -xf - -C ~/.stabled/

# Use more memory for zstd
zstd -d --long=31 --memory=4096MB archive.tar.zst