adafruit-mirror/Adafruit-Pi-ExternalRoot-Helper
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better logging, prompt before taking action

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This commit is contained in:
Brennen Bearnes 2015-04-12 17:10:15 -06:00
parent 5d11af50e7
commit 42f2441b90
1 changed files with 28 additions and 17 deletions
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45
adafruit-pi-externalroot-helper
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@ -64,7 +64,15 @@ if [[ ! -e "$target_drive" ]]; then
bail "Target drive ${target_drive} must be an existing device (use -d /dev/foo to specify)"
fi
info "fs prep" "Creating new ext4 filesystem on ${target_drive}"
info "start" "Will create new ext4 filesystem on ${target_drive}"
info "start" "If there is data on ${target_drive}, it will be lost."
read -p "Really proceed? " -n 1 -r
echo
if [[ ! $REPLY =~ ^[Yy]$ ]]
then
echo "Quitting."
exit
fi
# Create a new partition:
fdisk "$target_drive" <<EOF
@ -80,30 +88,33 @@ EOF
export target_partition="${target_drive}1"
# Get UUID for target partition:
eval `blkid -o export "${target_partition}"`
target_partition_uuid=$UUID
echo "Target partition GUID: ${target_partition_uuid}"
info "fs create" "Creating ext4 filesystem on ${target_partition}"
mkfs -t ext4 -L rootfs "${target_partition}"
# Create an actual filesystem:
mkfs -t ext4 -L rootfs "${target_partition}"
info "fs id" "Getting UUID for target partition"
eval `blkid -o export "${target_partition}"`
export target_partition_uuid=$UUID
# Get UUID for target filesystem:
target_filesystem_uuid=`tune2fs -l ${target_partition} | grep 'Filesystem UUID' | awk '{print $3}'`
info "fs id" "Getting UUID for target filesystem"
export target_filesystem_uuid=`tune2fs -l ${target_partition} | grep 'Filesystem UUID' | awk '{print $3}'`
info "fs copy" "Mounting ${target_partition}"
mount "${target_partition}" /mnt
info "fs id" "Target partition UUID: ${target_partition_uuid}"
info "fs id" "Target filesystem UUID: ${target_filesystem_uuid}"
info "fs copy" "Mounting ${target_partition} on /mnt"
mount "${target_partition}" /mnt
info "fs copy" "Copying root filesystem to ${target_partition}"
rsync -ax --progress / /mnt
rsync -ax / /mnt
info "boot config" "Configuring boot from {$target_partition}"
cp /boot/cmdline.txt /boot/cmdline.txt.bak
sed -i "s|root=\/dev\/mmcblk0p2|root=PARTUUID=${target_partition_uuid} rootdelay=5|" /boot/cmdline.txt
cp /boot/cmdline.txt /boot/cmdline.txt.bak
sed -i "s|root=\/dev\/mmcblk0p2|root=PARTUUID=${target_partition_uuid} rootdelay=5|" /boot/cmdline.txt
# Comment out old root partition in fstab, add new one:
sed -i '/mmcblk0p2/s/^/#/' /mnt/etc/fstab
echo "/dev/disk/by-uuid/${target_filesystem_uuid} / ext4 defaults,noatime 0 1" >> /mnt/etc/fstab
info "boot config" "Commenting out old root partition in /etc/fstab, adding new one"
sed -i '/mmcblk0p2/s/^/#/' /mnt/etc/fstab
echo "/dev/disk/by-uuid/${target_filesystem_uuid} / ext4 defaults,noatime 0 1" >> /mnt/etc/fstab
cat /etc/fstab
info "boot config" "Ok, your system should be ready. You may wish to check:"
info "boot config" " /mnt/etc/fstab"