Re: [rdiff-backup-users] locking the rdiff-backup destination

[Dominic Raferd]

Jakob Unterwurzacher wrote:
> I guess you will have to use a wrapper script for your rsync job and 
> your rdiff-backup job that does the locking (and obeys the lock).
>
> If you start both jobs at the same machine, it's easy:
> Put this at the start of each script - it will then exit when another 
> instance is running.
>
> #####
>
> #!/bin/bash
>
> exec 200> /tmp/lockfileXYZ
> flock -n 200 || echo 'Could not get lock!' && exit 1
>
> #####
Nice tip! An alternative which doesn't require flock or a temporary lock 
file is (again for a bash script):

######
#!/bin/bash

[ -n "`ps h -C rdiff-backup`" ] && echo "`basename $0` aborting - 
rdiff-backup is running" && exit 1

######

Dominic