add rclone function

modules/utility/sync.lib

@@ -1,29 +1,67 @@
 #!/bin/bash
  
   mirror_rootfs () {
+    local boot; local dest; local rootfs; local opts
     [[ ! $(command -v rsync) ]] && { echo rsync must be installed to use this function; return 5; }
-    dr="--dry-run"
+    opts=" --dry-run"
+    [[ $1 == "--run" ]] && opts="" && shift
+    [[ $1 == "-v" ]] && opts+=" -v" && shift
+    [[ $1 == "-o" ]] && opts+=" $2" && shift
 
     dest=$(realpath -s $1)
-    rootfs=$(realpath -s "${2:-/}")
+    rootfs=$2
 
     [ ! -d "$dest" ] && echo destination $dest is not a directory && return 3
     [ ! -d "$rootfs/etc" ] && echo not root filesystem at $rootfs && return 3
 
-    echo making mirror of root filesystem to 
-    rfse=rootfs_excludes
-    if sudo rsync -axHAWXS $dr --numeric-ids --delete --delete-excluded --force --exclude-from="$(rootfs_excludles)"  / /mnt/adrive/nas/@rootfs; then
-        echo making mirror of boot partition to /mnt/adrive/nas/@rootfs
-        if sudo rsync -axHAWXS $dr --numeric-ids --force --delete  /boot/ /mnt/adrive/nas/@boot; then
-        echo doit
+    echo making mirror of root filesystem at ${rootfs:-/} to $dest/rootfs
+    #TODO if destination is btrfs then make snapshot otherwise make directory
+    sudo btrfs subvol create $dest/rootfs >/dev/null
+    if sudo rsync -axHAWXS $opts --info=progress2 --numeric-ids --delete --delete-excluded --force --exclude-from="$(rootfs_excludes)" ${rootfs:-/} $dest/rootfs  ; then
+        echo root parition mirror was made to $dest/rootfs
+        boot=$rootfs/boot
+        [[ ! $(mountpoint $boot) ]] && boot=$rootfs/boot/efi 
+        [[ ! $(mountpoint $boot) ]] && echo neither $rootfs/boot nor $boot are mountpoints, no boot parition to mirror && return 2
+        echo making mirror of boot $boot partition to $dest$boot
+        sudo btrfs subvol create $dest$boot >/dev/null
+        if sudo rsync -aHAWXS $opts --info=progress2 --numeric-ids --force --delete $boot/ $dest$boot; then
+            echo boot partion is mirrored
         else 
-            echo unable to sync a copy of /boot, aborted backup    
+            echo unable to sync a copy of $boot, aborted backup    
         fi
     else
         echo unable to sync a copy of root file system, backkup failed
     fi
 }
 
+  rclone () {
+    local boot; local dest; local src; local opts
+    [[ ! $(command -v rsync) ]] && { echo rsync must be installed to use this function; return 5; }
+    opts=" --dry-run"
+    [[ $1 == "--run" ]] && opts="" && shift
+    [[ $1 == "-v" ]] && opts+=" -v" && shift
+    [[ $1 == "-o" ]] && opts+=" $2" && shift
+
+    src=$(realpath $1)
+    dest=$(realpath $2)
+    mkdir -p $dest >/dev/null
+    echo making clone/mirror of $src to $dest 
+    
+    if [ "$(ls -A $dest)" ]; then
+     echo WARNING: $dest is not empty but will be erased!, be sure before using --run
+    # TODO RUN CONFIRM 
+    #  if [[ $opt == *"--run"* ]]; then
+    fi
+    # if sudo rsync -axHAWXS $opts --info=progress2 --numeric-ids --delete --delete-excluded --force $src/ $dest/  ; then
+    cmd="sudo rsync -axHAWXS $opts --info=progress2 --numeric-ids --delete --force $src/ $dest/" 
+    echo "$cmd"
+    if $cmd ; then
+      echo mirror/clone was successful
+    else
+      echo unable to make the clone
+    fi
+}
+
 rootfs_excludes () {
 
 local list; local delete
@@ -31,6 +69,7 @@ local list; local delete
 [[ $1 == "-r" ]] && delete=true && shift
 [[ "$1" == "-"* ]] && >&2 echo bad option, aborting && return 1
 rfse=${1:-/tmp/rootfs_excludes.lst}
+touch $rfse
 [[ $delete ]] && rm $rfse
 cat <<EOF > $rfse
 .[Tt]rash*