Warn if a backup fails after old backups were removed

With --remove-before-backup, a failed backup leaves only the kept backups, or none with keep=0. Log an error and send a notification in that case, and document it in the man page.
2026-10-08 18:13:13 +02:00
parent 30e4416f8f
commit 871dd0f49a
2 changed files with 17 additions and 0 deletions
@@ -98,6 +98,9 @@ if saving bandwith is needed.
 Remove old backups (if necessary) before creating the new backup. Useful to free some space
 before performing the backup.
 Default behavior is to remove old backups after successfully completing the backup.
+Note that if the backup fails after old backups have been removed, only the backups kept
+according to \-\-keep will be left, and the new backup may be incomplete. In particular, with
+\-\-keep 0 there will be no complete backup available until the next successful one.
 .TP
 .B \-\-no\-syslog
 Don't use systemd journal for logging.