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Merge pull request #821 from m4rcs/before-backup 

Added a pre-backup script to complement post-backup script.
This commit is contained in:
Joshua Tauberer 2016-05-17 19:48:14 -04:00
parent ff7d4196a6 69bd137b4e
commit 9ee2d946b7
1 changed files with 13 additions and 3 deletions
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16
management/backup.py
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@ -2,9 +2,10 @@
# This script performs a backup of all user data:
# 1) System services are stopped.
# 2) An incremental encrypted backup is made using duplicity.
# 3) The stopped services are restarted.
# 4) STORAGE_ROOT/backup/after-backup is executd if it exists.
# 2) STORAGE_ROOT/backup/before-backup is executed if it exists.
# 3) An incremental encrypted backup is made using duplicity.
# 4) The stopped services are restarted.
# 5) STORAGE_ROOT/backup/after-backup is executed if it exists.
import os, os.path, shutil, glob, re, datetime, sys
import dateutil.parser, dateutil.relativedelta, dateutil.tz
@ -258,6 +259,15 @@ def perform_backup(full_backup):
service_command("postfix", "stop", quit=True)
service_command("dovecot", "stop", quit=True)
# Execute a pre-backup script that copies files outside the homedir.
# Run as the STORAGE_USER user, not as root. Pass our settings in
# environment variables so the script has access to STORAGE_ROOT.
pre_script = os.path.join(backup_root, 'before-backup')
if os.path.exists(pre_script):
shell('check_call',
['su', env['STORAGE_USER'], '-c', pre_script, config["target"]],
env=env)
# Run a backup of STORAGE_ROOT (but excluding the backups themselves!).
# --allow-source-mismatch is needed in case the box's hostname is changed
# after the first backup. See #396.