rsync cronjob只有在rsync尚未运行时才会运行 [英] Rsync cronjob that will only run if rsync isn't already running

问题描述

我已经在这里检查了一个解决方案，但似乎找不到一个。我处理一个非常慢的wan连接约300kb /秒。对于我的下载我使用一个遥控盒，然后我下载他们到我家。我试图运行一个cronjob，将rsync两个目录在我的远程和本地服务器每小时。我得到一切工作，但如果有很多数据传输rsyncs重叠，并结束创建同一个文件的两个实例，因此重复的数据发送。

I have checked for a solution here but cannot seem to find one. I am dealing with a very slow wan connection about 300kb/sec. For my downloads I am using a remote box, and then I am downloading them to my house. I am trying to run a cronjob that will rsync two directories on my remote and local server every hour. I got everything working but if there is a lot of data to transfer the rsyncs overlap and end up creating two instances of the same file thus duplicate data sent.

我想

推荐答案

通过脚本，您可以创建一个脚本一个锁定文件。如果文件存在，cronjob应该跳过运行;否则应该继续。脚本完成后，应删除锁定文件。

Via the script you can create a "lock" file. If the file exists, the cronjob should skip the run ; else it should proceed. Once the script completes, it should delete the lock file.

if [ -e /home/myhomedir/rsyncjob.lock ]
then
  echo "Rsync job already running...exiting"
  exit
fi

touch /home/myhomedir/rsyncjob.lock

#your code in here

#delete lock file at end of your job

rm /home/myhomedir/rsyncjob.lock

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