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| -rw-r--r-- | README.md | 11 |
1 files changed, 9 insertions, 2 deletions
@@ -45,6 +45,14 @@ On macOS, it has a few disadvantages compared to Time Machine - in particular it flock -n /tmp/rsync_tmbackup.lock rsync_tmbackup.sh /home /mnt/backup +# Backup expiration logic + +The script automatically deletes old backups using the following logic: +- Within the last 24 hours, all the backups are kept. +- Within the last 31 days, the most recent backup of each day is kept. +- After 31 days, only the most recent backup of each month is kept. +- Additionally, if the backup destination directory is full, the oldest backups are deleted until enough space is available. + ## Exclude file An optional exclude file can be provided as a third parameter. It should be compatible with the `--exclude-from` parameter of rsync. See [this tutorial](https://sites.google.com/site/rsync2u/home/rsync-tutorial/the-exclude-from-option) for more information. @@ -78,14 +86,13 @@ To display the rsync options that are used for backup, run `./rsync_tmbackup.sh * Check source and destination file-system (`df -T /dest`). If one of them is FAT, use the --modify-window rsync parameter (see `man rsync`) with a value of 1 or 2 * Add `--whole-file` arguments on Windows? See http://superuser.com/a/905415/73619 - * Minor changes (see TODO comments in the source). # LICENSE The MIT License (MIT) -Copyright (c) 2013-2016 Laurent Cozic +Copyright (c) 2013-2017 Laurent Cozic Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal |