1 files changed, 148 insertions, 0 deletions
diff --git a/draft/other-tools/fog/fog-notes.txt b/draft/other-tools/fog/fog-notes.txt
new file mode 100644
index 0000000..61a7d12
--- /dev/null
+++ b/draft/other-tools/fog/fog-notes.txt
@@ -0,0 +1,148 @@
+
+
+./src/buildroot/package/fog/scripts/usr/share/fog/lib/funcs.sh
+
+
+            pigz $PIGZ_COMP < $fifo | split -a 3 -d -b 200m - ${file}. &
+
+
+    mainuuidfilename="$imagePath/d${disk_number}.original.uuids"
+    swapuuidfilename="$imagePath/d${disk_number}.original.swapuuids"
+    sfdiskoriginalpartitionfilename="$imagePath/d${disk_number}.partitions"
+    sfdisklegacyoriginalpartitionfilename="$imagePath/d${disk_number}.original.partitions"
+    sfdiskminimumpartitionfilename="$imagePath/d${disk_number}.minimum.partitions"
+    sgdiskoriginalpartitionfilename="$imagePath/d${disk_number}.sgdisk.original.partitions"
+    fixed_size_file="$imagePath/d${disk_number}.fixed_size_partitions"
+    hasgrubfilename="$imagePath/d${disk_number}.has_grub"
+    [[ -n $sgdisk ]] && hasgrubfilename="$imagePath/d${disk_number}.grub.mbr"
+    [[ -n $sgdisk && $hasGRUB -eq 1 ]] && \
+	mbr="$imagePath/d${disk_number}.grub.mbr" || \
+	mbr="$imagePath/d${disk_number}.mbr"
+    ebrfilename="$path/d${disk_number}p${part_number}.ebr"
+
+# Save enough MBR and embedding area to capture all of GRUB
+# Strategy is to capture EVERYTHING before the first partition.
+# Then, leave a marker that this is a GRUB MBR for restoration.
+# We could get away with less storage, but more details are required
+# to parse the information correctly.  It would make the process
+# more complicated.
+
+# $1 is the disk
+# $2 is the disk number
+# $3 is the image path to save the file to.
+# $4 is the determinator of sgdisk use or not
+saveGRUB() {
+
+
+    # Determine the number of sectors to copy
+    # Hack Note: print $4+0 causes the column to be interpretted as a number
+    #            so the comma is tossed
+    local count=$(sfdisk -d $disk 2>/dev/null | awk /start=\ *[1-9]/'{print $4+0}' | sort -n | head -n1)
+
+
+    local has_grub=$(dd if=$disk bs=512 count=1 2>&1 | grep -i 'grub')
+
+    # Ensure that no more than 1MiB of data is copied (already have this size used elsewhere)
+    [[ $count -gt 2048 ]] && count=2048
+    local mbrfilename=""
+    MBRFileName "$imagePath" "$disk_number" "mbrfilename" "$sgdisk"
+    dd if=$disk of=$mbrfilename count=$count bs=512 >/dev/null 2>&1
+
+}
+
+
+
+hasGrubFileName() {
+    local imagePath="$1"  # e.g. /net/dev/foo
+    local disk_number="$2"    # e.g. 1
+    local sgdisk="$3"
+    [[ -z $imagePath ]] && handleError "No image path passed (${FUNCNAME[0]})\n   Args Passed: $*"
+    [[ -z $disk_number ]] && handleError "No disk number passed (${FUNCNAME[0]})\n   Args Passed: $*"
+    hasgrubfilename="$imagePath/d${disk_number}.has_grub"
+    [[ -n $sgdisk ]] && hasgrubfilename="$imagePath/d${disk_number}.grub.mbr"
+}
+
+savePartitionTablesAndBootLoaders() {
+
+    case $hasgpt in
+        0)
+            strdots="Saving Partition Tables (MBR)"
+            case $osid in
+                4|50|51)
+                    [[ $disk_number -eq 1 ]] && strdots="Saving Partition Tables and GRUB (MBR)"
+                    ;;
+            esac
+            dots "$strdots"
+            saveGRUB "$disk" "$disk_number" "$imagePath"
+            sfdisk -d $disk 2>/dev/null > $sfdiskfilename
+            [[ $have_extended_partition -ge 1 ]] && saveAllEBRs "$disk" "$disk_number" "$imagePath"
+            echo "Done"
+            ;;
+        1)
+            dots "Saving Partition Tables (GPT)"
+            saveGRUB "$disk" "$disk_number" "$imagePath" "true"
+            sgdisk -b "$imagePath/d${disk_number}.mbr" $disk >/dev/null 2>&1
+            if [[ ! $? -eq 0 ]]; then
+                echo "Failed"
+                debugPause
+                handleError "Error trying to save GPT partition tables (${FUNCNAME[0]})\n   Args Passed: $*"
+            fi
+            sfdisk -d $disk 2>/dev/null > $sfdiskfilename
+            echo "Done"
+            ;;
+    esac
+}o
+
+clearPartitionTables() {
+    sgdisk -Z $disk >/dev/null 2>&1
+}
+
+restorePartitionTablesAndBootLoaders() {
+    if [[ $table_type == GPT ]]; then
+        dots "Restoring Partition Tables (GPT)"
+        restoreGRUB "$disk" "$disk_number" "$imagePath" "true"
+        sgdisk -gel $tmpMBR $disk >/dev/null 2>&1
+        [[ ! $? -eq 0 ]] && handleError "Error trying to restore GPT partition tables (${FUNCNAME[0]})\n   Args Passed: $*"
+        global_gptcheck="yes"
+        echo "Done"
+    else
+	[big cheat for MBR, dd, sfdisk for EBRs]
+    fi
+}
+
+
+savePartition() {
+    case $fstype in
+        swap)
+            echo " * Saving swap partition UUID"
+            swapUUIDFileName "$imagePath" "$disk_number"
+            saveSwapUUID "$swapuuidfilename" "$part"
+            ;;
+        *)
+            case $parttype in
+                0x5|0xf)
+                    echo " * Not capturing content of extended partition"
+                    debugPause
+                    EBRFileName "$imagePath" "$disk_number" "$part_number"
+                    touch "$ebrfilename"
+                    ;;
+                *)
+                    echo " * Using partclone.$fstype"
+                    debugPause
+                    imgpart="$imagePath/d${disk_number}p${part_number}.img"
+                    uploadFormat "$fifoname" "$imgpart"
+                    partclone.$fstype -fsck-src-part -c -s $part -O $fifoname -N -f 1
+                    case $? in
+                        0)
+                            mv ${imgpart}.000 $imgpart >/dev/null 2>&1
+                            echo " * Image Captured"
+                            ;;
+                        *)
+                            handleError "Failed to complete capture (${FUNCNAME[0]})\n   Args Passed: $*"
+                            ;;
+                    esac
+                    ;;
+            esac
+            ;;
+    esac
+