[rdiff-backup-users] Simultaneous backups with same source and destination.

[Matthew Flaschen]

What will happen if the same rdiff-backup sources and destinations are
used by two simultaneously running backups?  E.g. if there is an active
backup from /home/ to /media/external, what will happen if I try to do
another simultaneous backup from /home/ to /media/external ?  Will any
form of lockfile prevent this?  If not, will corruption result?  I ask
because it appears I have ran a manual backup while cron was doing one
in the background.  Now, when I try to run the backup, I get the error:

Previous backup seems to have failed, regressing destination now.
Regressing to Fri Aug 10 03:40:36 2007
Fatal Error: No metadata for time Fri Aug 10 03:40:36 2007 found, cannot
regress

Matthew Flaschen