commit 65e21e5b307ed9b36c02a2671d6e69631b2168dd
Author: root <root@pbs.box>
Date:   Fri May 23 10:16:57 2025 +0200

    first commit

diff --git a/backups2smb.sh b/backups2smb.sh
new file mode 100755
index 0000000..66c3a32
--- /dev/null
+++ b/backups2smb.sh
@@ -0,0 +1,242 @@
+#!/bin/bash
+
+# === Config ===
+SERVER_IP="192.168.2.194"
+SHARE_NAME="PBS-back"
+MOUNT_POINT="/mnt/smb-backup"
+CREDENTIALS_FILE="/root/.smb-pbs-cred"
+DATE=$(date +%F-%H%M)
+BACKUP_NAME="pbs-config-$DATE"
+TMP_BACKUP="/tmp/$BACKUP_NAME"
+CHUNK_SIZE="10G"
+MIN_SPACE_REQUIRED="5G"  # Minimum space required in /tmp
+LOG="/var/log/pbs-smb-backup.log"
+SRC="/etc /root /mypool"
+MAX_BACKUPS=3  # Keep exactly 3 backups
+
+# === Cleanup function ===
+cleanup_old_backups() {
+    echo "[$(date)] 🧹 Starting cleanup of old backups..." | tee -a "$LOG"
+    
+    # Cleanup old backups on SMB share
+    if mountpoint -q "$MOUNT_POINT"; then
+        echo "[$(date)] Keeping only the $MAX_BACKUPS most recent backups..." | tee -a "$LOG"
+        # List all backup directories, sort by date (newest first), and remove older ones
+        cd "$MOUNT_POINT" || exit 1
+        ls -td pbs-config-* 2>/dev/null | tail -n +$((MAX_BACKUPS + 1)) | xargs -r rm -rf
+        echo "[$(date)] Current backups:" | tee -a "$LOG"
+        ls -lhd pbs-config-* 2>/dev/null | tee -a "$LOG"
+    fi
+    
+    # Cleanup old logs
+    echo "[$(date)] Cleaning up old log files..." | tee -a "$LOG"
+    find /var/log -name "pbs-smb-backup.*.log" -mtime +7 -delete
+    
+    # Cleanup /tmp
+    echo "[$(date)] Cleaning up old temporary files..." | tee -a "$LOG"
+    rm -rf /tmp/pbs-config-*
+    rm -rf /tmp/restore-*
+}
+
+# === Create mount point if needed ===
+mkdir -p "$MOUNT_POINT"
+
+# === Ensure credentials file exists ===
+if [ ! -f "$CREDENTIALS_FILE" ]; then
+    echo "username=pbs" > "$CREDENTIALS_FILE"
+    echo "password=2104" >> "$CREDENTIALS_FILE"
+    chmod 600 "$CREDENTIALS_FILE"
+fi
+
+# === Helper functions ===
+get_available_space() {
+    df -B1 /tmp | awk 'NR==2 {print $4}'
+}
+
+check_space() {
+    local required_space=$(numfmt --from=iec $MIN_SPACE_REQUIRED)
+    local available_space=$(get_available_space)
+    
+    if [ "$available_space" -lt "$required_space" ]; then
+        echo "[$(date)] ⚠️ Warning: Only $(numfmt --to=iec $available_space) available in /tmp" | tee -a "$LOG"
+        return 1
+    fi
+    return 0
+}
+
+wait_for_space() {
+    local required_space=$(numfmt --from=iec $MIN_SPACE_REQUIRED)
+    local available_space
+    
+    while true; do
+        available_space=$(get_available_space)
+        if [ "$available_space" -ge "$required_space" ]; then
+            return 0
+        fi
+        echo "[$(date)] ⚠️ Waiting for more space in /tmp (need $MIN_SPACE_REQUIRED, have $(numfmt --to=iec $available_space))..." | tee -a "$LOG"
+        sleep 10
+    done
+}
+
+mount_share() {
+    echo "[$(date)] Mounting SMB share..." | tee -a "$LOG"
+    
+    # Check if already mounted
+    if mountpoint -q "$MOUNT_POINT"; then
+        echo "[$(date)] Share already mounted, unmounting first..." | tee -a "$LOG"
+        umount "$MOUNT_POINT"
+    fi
+    
+    # Try mounting with different SMB versions if needed
+    for smb_ver in "3.0" "2.1" "2.0" "1.0"; do
+        echo "[$(date)] Attempting mount with SMB version $smb_ver..." | tee -a "$LOG"
+        mount -t cifs "//$SERVER_IP/$SHARE_NAME" "$MOUNT_POINT" -o "credentials=$CREDENTIALS_FILE,iocharset=utf8,vers=$smb_ver,sec=ntlmssp,uid=0,gid=0,file_mode=0644,dir_mode=0755"
+        if [ $? -eq 0 ]; then
+            echo "[$(date)] Successfully mounted with SMB version $smb_ver" | tee -a "$LOG"
+            return 0
+        fi
+        # Show dmesg output for debugging
+        echo "[$(date)] Mount failed, checking dmesg for details..." | tee -a "$LOG"
+        dmesg | tail -n 20 | tee -a "$LOG"
+    done
+    
+    echo "[$(date)] ❌ Failed to mount SMB share. Please check:" | tee -a "$LOG"
+    echo "1. SMB server is running and accessible" | tee -a "$LOG"
+    echo "2. Credentials are correct" | tee -a "$LOG"
+    echo "3. Network connectivity to $SERVER_IP" | tee -a "$LOG"
+    echo "4. SMB share '$SHARE_NAME' exists and is accessible" | tee -a "$LOG"
+    exit 1
+}
+
+unmount_share() {
+    echo "[$(date)] Unmounting SMB share..." | tee -a "$LOG"
+    if mountpoint -q "$MOUNT_POINT"; then
+        umount "$MOUNT_POINT"
+    fi
+}
+
+# === Handle -u option for restore ===
+if [ "$1" == "-u" ]; then
+    echo "[$(date)] 🔁 Restore mode selected. Starting cleanup..." | tee -a "$LOG"
+    cleanup_old_backups
+    mount_share
+
+    # Get latest backup directory
+    LATEST_BACKUP_DIR=$(ls -td "$MOUNT_POINT"/pbs-config-* 2>/dev/null | head -n1)
+
+    if [ -z "$LATEST_BACKUP_DIR" ]; then
+        echo "[$(date)] ❌ No backup found on SMB share." | tee -a "$LOG"
+        unmount_share
+        exit 1
+    fi
+
+    echo "[$(date)] ⬇️ Starting streaming restore process from $LATEST_BACKUP_DIR..." | tee -a "$LOG"
+    
+    # Create a temporary directory for processing
+    TMP_RESTORE_DIR="/tmp/restore-$(basename "$LATEST_BACKUP_DIR")"
+    mkdir -p "$TMP_RESTORE_DIR"
+    
+    # Process chunks one by one
+    for chunk in "$LATEST_BACKUP_DIR"/chunk_*; do
+        if [ ! -f "$chunk" ]; then
+            continue
+        fi
+        
+        echo "[$(date)] Processing chunk: $(basename "$chunk")" | tee -a "$LOG"
+        
+        # Copy chunk to temp
+        rsync -ah --progress "$chunk" "$TMP_RESTORE_DIR/"
+        
+        # If this is the first chunk, start extraction
+        if [ "$(basename "$chunk")" = "chunk_aa" ]; then
+            7z x -y "$TMP_RESTORE_DIR/$(basename "$chunk")" -o/ &
+            extract_pid=$!
+        else
+            # For subsequent chunks, append to the extraction
+            cat "$TMP_RESTORE_DIR/$(basename "$chunk")" >> "$TMP_RESTORE_DIR/combined.7z"
+        fi
+        
+        # Clean up the processed chunk
+        rm -f "$TMP_RESTORE_DIR/$(basename "$chunk")"
+    done
+    
+    # Wait for extraction to complete
+    wait $extract_pid
+    
+    # Cleanup
+    rm -rf "$TMP_RESTORE_DIR"
+    unmount_share
+    echo "[$(date)] ✅ Restore completed." | tee -a "$LOG"
+    exit 0
+fi
+
+# === Regular backup mode ===
+
+# Step 1: Start cleanup
+echo "[$(date)] 🧹 Starting initial cleanup..." | tee -a "$LOG"
+cleanup_old_backups
+
+if ! check_space; then
+    echo "[$(date)] ⚠️ Proceeding with caution due to limited space" | tee -a "$LOG"
+fi
+
+# Step 2: Create temporary directory for chunks
+mkdir -p "$TMP_BACKUP"
+
+# Step 3: Mount share
+mount_share
+
+# Step 4: Create backup directory on SMB
+BACKUP_DIR="$MOUNT_POINT/$BACKUP_NAME"
+mkdir -p "$BACKUP_DIR"
+
+# Step 5: Create backup in chunks with space management
+echo "[$(date)] 🗜️ Starting backup with space management..." | tee -a "$LOG"
+
+# Create a temporary file list
+echo "[$(date)] 📋 Creating file list..." | tee -a "$LOG"
+find $SRC -type f > "$TMP_BACKUP/filelist.txt"
+
+# Process files in chunks
+while IFS= read -r file; do
+    # Check space before processing each file
+    if ! check_space; then
+        echo "[$(date)] ⏳ Waiting for more space..." | tee -a "$LOG"
+        wait_for_space
+    fi
+    
+    # Get the relative path for the file
+    rel_path="${file#/}"
+    chunk_dir="$TMP_BACKUP/$(dirname "$rel_path")"
+    mkdir -p "$chunk_dir"
+    
+    # Compress the file
+    echo "[$(date)] 📦 Compressing: $file" | tee -a "$LOG"
+    7z a -t7z -m0=lzma2 -mx=5 "$TMP_BACKUP/$(echo "$rel_path" | tr / _).7z" "$file"
+    
+    # If we have enough chunks or space is low, transfer them
+    if [ $(ls "$TMP_BACKUP"/*.7z 2>/dev/null | wc -l) -ge 5 ] || ! check_space; then
+        echo "[$(date)] ⬆️ Transferring chunks to SMB..." | tee -a "$LOG"
+        for chunk in "$TMP_BACKUP"/*.7z; do
+            if [ -f "$chunk" ]; then
+                rsync -ah --progress "$chunk" "$BACKUP_DIR/"
+                rm -f "$chunk"
+            fi
+        done
+    fi
+done < "$TMP_BACKUP/filelist.txt"
+
+# Transfer any remaining chunks
+echo "[$(date)] ⬆️ Transferring remaining chunks..." | tee -a "$LOG"
+for chunk in "$TMP_BACKUP"/*.7z; do
+    if [ -f "$chunk" ]; then
+        rsync -ah --progress "$chunk" "$BACKUP_DIR/"
+        rm -f "$chunk"
+    fi
+done
+
+# Step 6: Final cleanup and finish
+rm -rf "$TMP_BACKUP"
+unmount_share
+echo "[$(date)] ✅ Backup completed successfully: $BACKUP_NAME" | tee -a "$LOG"
+