Howto to control rsync through cron

[CAD/SysAdmin Manager]

Hi,

  I have setup a cron job to rsync files between two servers every hour.

30 * * * * rsync -avz --delete rsyncsrv1::ftp/  /export/ftp/

  This works fine most of the time, but if I have a very large file that
needs to be transfered ( many tens of MBs), I run into a problem. Since
the link between my two servers is slow, it can take more than an hour
to complete the rsync transfer. So at the end of the hour, when the next
rsync job is started by cron, the big file transfer gets aborted and a
new transfer is started. Due to this the big file transfer never gets
completed.

  I have tried to increase the time between successive cron jobs, but
that is only a temporary fix untill I run into an even bigger file which
causes the new settings to fail. Is there a way I can control this
behaviour, and avoid this looping ?

  Thanks & regards,

--
Derric Lewis
CAD/System Administrator
Virtual IP Group, Inc.


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