DSM-G600, DNS-3xx and NSA-220 Hack Forum

ottsm · 2011-11-26 05:06:17

Started a cron job that is setup to sync both hard drives on a 323 every 24 hours. I put a new drive in and now it is going to take more then 24 hours given the size of the drives. What is going to happen, is it going to start another rsync that is going to run in parallel, or is it going to wait for the first rsync to complete?

Should I stop the cron job, if so, how do you stop a cron job? Not sure cron stop will work and if it does will it kill the file jobs that are transferring during the kill process or do I need to worry about the last few files being corrupt.

scaramanga · 2011-11-26 12:18:50

Unless you did something yourself to make sure there won't be two jobs running at the same time, you'll get two jobs running at the same time.
You should temporarily stop the cron job till the first one finishes.

FunFiler · 2011-11-26 17:06:30

Run "crontab -e" to load the cron jobs into the editor. Insert a hash "#" before the one you want to disable. Remove it again later to re-enable the job.

ottsm · 2011-11-26 19:29:28

The problem is the cron job is still running, if I edit the cron while it's running will it stop the job?

FunFiler · 2011-11-26 19:59:17

No, it won't stop the running job, it will stop another one from starting.

If you want to stop the current job, then run 'ps -ef' to see the running processes. You can type 'kill -9 <pid>' and insert the appropriate process id of the job you want to stop...... or just let it finish on its own.

bjby · 2011-11-26 21:23:45

Only run another rsync if there isnt one running already.

#!/bin/bash

RESULT=$(ps -ef | egrep 'rsync' | grep -v grep )

if [ -z "$RESULT" ] ; then

rsync bla bla ;

fi

ottsm · 2011-11-27 15:53:30

Thanks for the info, like the idea of adding the additional script commands to avoid this problem. I have both a 325 and 323 with 1tb and 2tb drives. I installed a new backup drive and forgot how long this can take, over 1.5 days for the 323 and 5gb.

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#1 2011-11-26 05:06:17

How to prevent multiple cron jobs or stop cron jobs

#2 2011-11-26 12:18:50

Re: How to prevent multiple cron jobs or stop cron jobs

#3 2011-11-26 17:06:30

Re: How to prevent multiple cron jobs or stop cron jobs

#4 2011-11-26 19:29:28

Re: How to prevent multiple cron jobs or stop cron jobs

#5 2011-11-26 19:59:17

Re: How to prevent multiple cron jobs or stop cron jobs

#6 2011-11-26 21:23:45

Re: How to prevent multiple cron jobs or stop cron jobs

#7 2011-11-27 15:53:30

Re: How to prevent multiple cron jobs or stop cron jobs

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