From 6d3633eb7cccfccaa237a495dbd4d9800da79a98 Mon Sep 17 00:00:00 2001
From: Christian Rotzoll <christian@geektank.de>
Date: Mon, 25 Feb 2019 05:33:52 +0100
Subject: [PATCH] formatting BTRFS

---
 home.admin/config.scripts/blitz.datadrive.sh | 143 ++++++++++++-------
 1 file changed, 94 insertions(+), 49 deletions(-)

diff --git a/home.admin/config.scripts/blitz.datadrive.sh b/home.admin/config.scripts/blitz.datadrive.sh
index 9f05b46..7f12817 100644
--- a/home.admin/config.scripts/blitz.datadrive.sh
+++ b/home.admin/config.scripts/blitz.datadrive.sh
@@ -19,9 +19,34 @@ echo "make sure BTRFS is installed ..."
 sudo apt-get install -y btrfs-tools
 echo ""
 
-# detect the two usb drives
-echo "Detecting two USB sticks/drives with same size ..."
-lsblk -o NAME | grep "^sd" | while read -r test1 ; do
+# check on/off state
+dataStorageNotAvailableYet=$(sudo btrfs filesystem df /mnt/data 2>&1 | grep -c "ERROR: not a btrfs filesystem")
+if [ "$1" = "1" ] || [ "$1" = "on" ]; then
+  echo "Trying to switch additional data storage on ..."
+  if [ ${dataStorageNotAvailableYet} -eq 0 ]; then
+    echo "FAIL -> data storage is already on"
+    exit 1
+  fi
+elif [ "$1" = "0" ] || [ "$1" = "off" ]; then
+  echo "Trying to switch additional data storage off ..."
+  if [ ${dataStorageNotAvailableYet} -eq 1 ]; then
+    echo "FAIL -> data storage is already off"
+    exit 1
+  fi
+else
+  echo "FAIL -> Parameter '${$1}' not known."
+  exit 1
+fi
+
+###################
+# SWITCH ON
+###################
+
+if [ "$1" = "1" ] || [ "$1" = "on" ]; then
+
+  # detect the two usb drives
+  echo "Detecting two USB sticks/drives with same size ..."
+  lsblk -o NAME | grep "^sd" | while read -r test1 ; do
     size1=$(lsblk -o NAME,SIZE -b | grep "^${test1}" | awk '$1=$1' | cut -d " " -f 2)
     echo "Checking : ${test1} size(${size1})"
     lsblk -o NAME | grep "^sd" | grep -v "${test1}" | while read -r test2 ; do
@@ -34,59 +59,79 @@ lsblk -o NAME | grep "^sd" | while read -r test1 ; do
         echo "  different ${test2} size(${size2})"
       fi
     done
-done
-dev1=$(cat .dev1.tmp)
-dev2=$(cat .dev2.tmp)
-rm -f .dev1.tmp
-rm -f .dev2.tmp
-echo "RESULTS:"
-echo "dev1(${dev1})"
-echo "dev2(${dev2})"
-echo ""
+  done
+  dev1=$(cat .dev1.tmp)
+  dev2=$(cat .dev2.tmp)
+  rm -f .dev1.tmp
+  rm -f .dev2.tmp
+  echo "RESULTS:"
+  echo "dev1(${dev1})"
+  echo "dev2(${dev2})"
+  echo ""
 
-# check that results are available
-if [ ${#dev1} -eq 0 ] || [ ${#dev2} -eq 0 ]; then
-  echo "!! FAIL -> was not able to detect two devices with the same size"
-  exit 1
-fi
+  # check that results are available
+  if [ ${#dev1} -eq 0 ] || [ ${#dev2} -eq 0 ]; then
+    echo "!! FAIL -> was not able to detect two devices with the same size"
+    exit 1
+  fi
 
-# check size (at least 4GB minus some tolerance)
-size=$(lsblk -o NAME,SIZE -b | grep "^${dev1}" | awk '$1=$1' | cut -d " " -f 2)
-if [ ${size} -lt  3500000000 ]; then
-  echo "!! FAIL -> too small - additional storage needs to be bigger than 4GB"
-  exit 1
-fi
+  # check size (at least 4GB minus some tolerance)
+  size=$(lsblk -o NAME,SIZE -b | grep "^${dev1}" | awk '$1=$1' | cut -d " " -f 2)
+  if [ ${size} -lt  3500000000 ]; then
+    echo "!! FAIL -> too small - additional storage needs to be bigger than 4GB"
+    exit 1
+  fi
 
-# check if devices are containing old data
-echo "Analysing Drives ..."
-nameDev1=$(lsblk -o NAME,LABEL | grep "^${dev1}" | awk '$1=$1' | cut -d " " -f 2)
-nameDev2=$(lsblk -o NAME,LABEL | grep "^${dev2}" | awk '$1=$1' | cut -d " " -f 2)
-if [ "${nameDev1}" = "DATASTORE" ] || [ "${nameDev2}" = "DATASTORE" ]; then
-  # TODO: once implemented -> also make sure that dev1 is named "DATASTORE" and if 2nd is other -> format and add as raid
-  echo "!! NOT IMPLEMENTED YET -> devices seem contain old data, because name is 'DATASTORE'"
-  echo "if you dont care about that data: format devices devices on other computer with FAT(32) named TEST"
-  exit 1
-fi
-echo "OK drives dont contain old data."
-echo ""
+  # check if devices are containing old data
+  echo "Analysing Drives ..."
+  nameDev1=$(lsblk -o NAME,LABEL | grep "^${dev1}" | awk '$1=$1' | cut -d " " -f 2)
+  nameDev2=$(lsblk -o NAME,LABEL | grep "^${dev2}" | awk '$1=$1' | cut -d " " -f 2)
+  if [ "${nameDev1}" = "DATASTORE" ] || [ "${nameDev2}" = "DATASTORE" ]; then
+    # TODO: once implemented -> also make sure that dev1 is named "DATASTORE" and if 2nd is other -> format and add as raid
+    echo "!! NOT IMPLEMENTED YET -> devices seem contain old data, because name is 'DATASTORE'"
+    echo "if you dont care about that data: format devices devices on other computer with FAT(32) named TEST"
+    exit 1
+  fi
+  echo "OK drives dont contain old data."
+  echo ""
 
-exit 0
+  # format first drive
+  echo "Formatting /dev/${dev1} with BTRFS ..."
+  sudo mkfs.btrfs -L DATASTORE -f /dev/${dev1}
+  echo "OK"
+  echo ""
 
+  # mount the BTRFS drive
+  echo "Mounting under /mnt/data ..."
+  sudo mkdir -p /mnt/data
+  sudo mount /dev/sdb1 /mnt/data
+  echo "OK"
+  echo ""
 
-lsblk -o UUID,NAME,FSTYPE,SIZE,LABEL,MODEL | greap "^sd"
-# TODO: find the drives
+  # adding the second device
+  echo "Adding the second device as RAID1 .."
+  sudo btrfs device add -f /dev/sdc /mnt/data
+  sudo btrfs filesystem balance start -dconvert=raid1 -mconvert=raid1 /mnt/data
+  echo ""
+  exit 0
 
+  #uuid=$(lsblk -o NAME,UUID | grep "^${dev1}" | awk '$1=$1' | cut -d " " -f 2)
+
+fi
 
-# TODO: DETECT if they is already data
-lsblk -o UUID,NAME,FSTYPE,SIZE,LABEL,MODEL 
+###################
+# SWITCH OFF
+###################
 
-# check if there is already data on there
+if [ "$1" = "0" ] || [ "$1" = "off" ]; then
 
-# create 
-sudo mkfs.btrfs -L DATASTORE -f /dev/sdb
-sudo mkdir -p /mnt/data
-sudo mount /dev/sdb1 /mnt/data
-sudo btrfs filesystem show /mnt/data
-sudo btrfs device add -f /dev/sdc /mnt/data
-sudo btrfs filesystem df /mnt/data
-sudo btrfs filesystem balance start -dconvert=raid1 -mconvert=raid1 /mnt/data
\ No newline at end of file
+  echo "TODO -> Turn off"
+
+  sudo btrfs filesystem show /mnt/data
+  sudo btrfs filesystem df /mnt/data
+  
+  sudo umount /mnt/data
+
+  exit 0
+
+fi