Editing User:Nomaster/Backup (section)

== Daily Routine ==

# Wake up
# Drink tea
# Go shit
# Exercise Yoga
# Eat breakfast
# '''Backup ALL the files''' (during hygiene)
# Leave home

My external harddrive is totally occupied by a [[Wikipedia:Linux_Unified_Key_Setup|LUKS]] container. After connecting the drive to my laptop, I start like this:

  cryptsetup luksOpen /dev/sdb backup

If not happened yet, format the drive with a [[Wikipedia:Btrfs|btrfs]] filesystem

  mkfs.btrfs -L backup /dev/mapper/backup

Then, mount it and use compression

  mount -o compress=lzo -t btrfs LABEL=backup /media/backup

If not happened yet, create a subvolume

  btrfs subvolume create /media/backup/nomaster

For may backups, I use rsync (with delete) to copy my files to an external hard drive. Vanished files will be deleted.
  
  rsync -aPv --delete --exclude downloads --exclude music --exclude .cache /home/nomaster/ /media/backup/nomaster/

After each sync, I make a snapshot of this state of my files.

  sudo btrfs subvolume snapshot -r /media/backup/nomaster /media/backup/nomaster-$(date +%F)

Lastly, I unmount the filesystem and close the container.

  sudo umount /media
  sudo cryptsetup luksClose backup

Then, I disconnect the drive.

When my drive will be full at some point in the future, I’m going to remove old snapshots to free space occupied by large files deleted a long time ago.