btrs-local

btrfs/snapshot-locales/init.sh

@@ -0,0 +1,61 @@
+#!/bin/bash
+
+set -e
+
+# Declarar varables
+dir_disk=("/dev/nvme0n1p3" "/dev/bcache0")
+
+dir_temp=("/tmp/root" "/tmp/srv")
+
+dir_create="/tmp/{root,srv}"
+
+name_snapshot=$(date +"%m%d%Y")
+
+
+
+# Crear ruta
+mkdir -p "$dir_create"
+
+#Montar rutas
+
+for i in "${!dir_disk[@]}"; do
+    disk_origen="${dir_disk[$i]}"
+    dir_backup="${dir_temp[$i]}"
+    dir_snapshot="$dir_backup/snapshot/daily"
+    #Montar rutas
+    mount "$disk_origen" "$dir_backup"
+
+    # Verificar que existan rutas, caso contrario crearlas
+
+    [ -d "$dir_snapshot" ] || mkdir -p  "$dir_snapshot"
+
+    # Hacer snapshot
+    if [ $i -eq 0 ]; then 
+        btrfs subvolume snapshot / "$dir_snapshot/$name_snapshot"
+    else 
+        btrfs subvolume snapshot /srv "$dir_snapshot/$name_snapshot"
+    fi
+    # Desmontar rutas
+
+    readarray -t snapshots < <(ls -1 "$dir_snapshot" | sort)
+
+    total=${#snapshots[@]}
+
+    if (( total <= 3 )); then
+        echo "Hay $total snapshots, no se elimina nada"
+        continue
+    fi
+
+    # cuantos borrar
+    borrar=$(( total - 3 ))
+
+    for (( contador=0; contador<borrar; contador++ )); do
+        echo "Eliminando snapshot: ${snapshots[$contador]}"
+        btrfs subvolume delete "$dir_snapshot/${snapshots[$contador]}"
+    done
+
+    #Desmontar la ruta
+    umount "$dir_backup"
+    mount | grep btrfs | grep "$dir_backup" || echo "Se desmonto $dir_backup"
+
+done