proxmox/scripts/migrate-pve-vg-to-sda-sdb.sh.bak

#!/usr/bin/env bash
set -euo pipefail

# Script to migrate pve volume group from sdc/sdd to sda/sdb
# This prepares sdc/sdd for RAID 10 creation

set -u

TARGET_NODE="r630-01"
TARGET_NODE_IP="192.168.11.11"
TARGET_NODE_PASS="password"

# Colors
GREEN='\033[0;32m'
RED='\033[0;31m'
YELLOW='\033[1;33m'
BLUE='\033[0;34m'
NC='\033[0m'

log_info() { echo -e "${BLUE}[INFO]${NC} $1"; }
log_success() { echo -e "${GREEN}[✓]${NC} $1"; }
log_error() { echo -e "${RED}[✗]${NC} $1"; }
log_warn() { echo -e "${YELLOW}[⚠]${NC} $1"; }

ssh_r630_01() {
    sshpass -p "$TARGET_NODE_PASS" ssh -o StrictHostKeyChecking=no -o ConnectTimeout=10 root@"$TARGET_NODE_IP" "$@" 2>&1
}

check_storage() {
    log_info "Checking current storage configuration..."
    
    # Check sda/sdb availability
    local sda_size=$(ssh_r630_01 "lsblk -bno SIZE /dev/sda 2>/dev/null | head -1")
    local sdb_size=$(ssh_r630_01 "lsblk -bno SIZE /dev/sdb 2>/dev/null | head -1")
    
    log_info "sda size: $sda_size bytes (~$(echo "scale=2; $sda_size/1024/1024/1024" | bc) GB)"
    log_info "sdb size: $sdb_size bytes (~$(echo "scale=2; $sdb_size/1024/1024/1024" | bc) GB)"
    
    # Check if sda/sdb are in use
    if ssh_r630_01 "pvs 2>/dev/null | grep -q /dev/sda || mount | grep -q /dev/sda"; then
        log_warn "sda is already in use"
        return 1
    fi
    
    if ssh_r630_01 "pvs 2>/dev/null | grep -q /dev/sdb || mount | grep -q /dev/sdb"; then
        log_warn "sdb is already in use"
        return 1
    fi
    
    # Check current pve VG usage
    local pve_size=$(ssh_r630_01 "vgs --units g --noheadings -o vg_size pve 2>/dev/null | tr -d ' '")
    local pve_free=$(ssh_r630_01 "vgs --units g --noheadings -o vg_free pve 2>/dev/null | tr -d ' '")
    local pve_used=$(echo "$pve_size - $pve_free" | bc)
    
    log_info "Current pve VG: ${pve_size}GB total, ${pve_used}GB used, ${pve_free}GB free"
    
    # Check if sda+sdb can hold the data
    local sda_gb=$(echo "scale=2; $sda_size/1024/1024/1024" | bc | cut -d. -f1)
    local sdb_gb=$(echo "scale=2; $sdb_size/1024/1024/1024" | bc | cut -d. -f1)
    local total_available=$(echo "$sda_gb + $sdb_gb" | bc)
    
    log_info "Available on sda+sdb: ~${total_available}GB"
    
    if [ "$(echo "$total_available < $pve_used" | bc)" -eq 1 ]; then
        log_error "sda+sdb may not have enough space for migration"
        log_warn "Required: ${pve_used}GB, Available: ~${total_available}GB"
        return 1
    fi
    
    log_success "Storage check passed"
    return 0
}

prepare_sda_sdb() {
    log_info "Preparing sda and sdb as physical volumes..."
    
    # Check if partitions exist
    if ssh_r630_01 "ls /dev/sda1 /dev/sdb1 2>/dev/null"; then
        log_warn "sda and/or sdb have partitions. This script will use the whole disk."
        log_warn "WARNING: This will destroy any existing partitions!"
        read -p "Continue? (yes/no): " confirm
        if [ "$confirm" != "yes" ]; then
            return 1
        fi
    fi
    
    # Create physical volumes
    log_info "Creating physical volume on sda..."
    ssh_r630_01 "pvcreate /dev/sda" || {
        log_error "Failed to create PV on sda"
        return 1
    }
    
    log_info "Creating physical volume on sdb..."
    ssh_r630_01 "pvcreate /dev/sdb" || {
        log_error "Failed to create PV on sdb"
        return 1
    }
    
    log_success "Physical volumes created on sda and sdb"
    return 0
}

extend_pve_vg() {
    log_info "Extending pve volume group to include sda and sdb..."
    
    # Extend VG
    ssh_r630_01 "vgextend pve /dev/sda /dev/sdb" || {
        log_error "Failed to extend pve VG"
        return 1
    }
    
    log_success "pve VG extended to include sda and sdb"
    
    # Show new VG status
    log_info "Updated VG status:"
    ssh_r630_01 "vgs pve"
    
    return 0
}

migrate_data() {
    log_info "Migrating data from sdc/sdd to sda/sdb..."
    
    # Use pvmove to migrate data
    log_info "Migrating data from sdc..."
    ssh_r630_01 "pvmove /dev/sdc /dev/sda /dev/sdb" || {
        log_error "Failed to migrate data from sdc"
        return 1
    }
    
    log_info "Migrating data from sdd..."
    ssh_r630_01 "pvmove /dev/sdd /dev/sda /dev/sdb" || {
        log_error "Failed to migrate data from sdd"
        return 1
    }
    
    log_success "Data migration completed"
    return 0
}

remove_pvs() {
    log_info "Removing sdc and sdd from pve volume group..."
    
    # Remove PVs from VG
    ssh_r630_01 "vgreduce pve /dev/sdc /dev/sdd" || {
        log_error "Failed to remove PVs from VG"
        return 1
    }
    
    # Remove physical volume labels
    ssh_r630_01 "pvremove /dev/sdc /dev/sdd" || {
        log_error "Failed to remove PV labels"
        return 1
    }
    
    log_success "sdc and sdd removed from pve VG"
    
    # Verify
    log_info "Verifying pve VG status:"
    ssh_r630_01 "vgs pve"
    ssh_r630_01 "pvs | grep pve"
    
    return 0
}

main() {
    echo ""
    log_info "=== Migration: pve VG from sdc/sdd to sda/sdb ==="
    log_info "Purpose: Prepare sdc/sdd for RAID 10 creation"
    echo ""
    
    # Check storage
    if ! check_storage; then
        log_error "Storage check failed"
        exit 1
    fi
    
    echo ""
    log_warn "WARNING: This will migrate all data from sdc/sdd to sda/sdb"
    log_warn "This process may take a while depending on data size"
    read -p "Continue with migration? (yes/no): " confirm
    if [ "$confirm" != "yes" ]; then
        log_info "Operation cancelled"
        exit 0
    fi
    
    # Prepare sda/sdb
    if ! prepare_sda_sdb; then
        log_error "Failed to prepare sda/sdb"
        exit 1
    fi
    
    # Extend VG
    if ! extend_pve_vg; then
        log_error "Failed to extend VG"
        exit 1
    fi
    
    # Migrate data
    if ! migrate_data; then
        log_error "Data migration failed"
        log_warn "VG has been extended but migration incomplete"
        exit 1
    fi
    
    # Remove old PVs
    if ! remove_pvs; then
        log_error "Failed to remove old PVs"
        log_warn "Data migrated but sdc/sdd still in VG"
        exit 1
    fi
    
    log_success "Migration completed successfully!"
    log_info "sdc and sdd are now ready for RAID 10 creation"
    echo ""
}

main "$@"