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mobi_backup [21.01.2019 12:56]
Pascal Suter
mobi_backup [21.01.2019 12:58]
Pascal Suter
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 The advantage of running multiple backup jobs at once is, that you can usually reach a much higher overall throughput with multiple rsyncs running in parallel than running them one after the other because rsync is single threaded and the overhead for ssh and file checking etc. is huge. So it usually makes no sense to wait for one host to complete before backing up a second host. \\ The advantage of running multiple backup jobs at once is, that you can usually reach a much higher overall throughput with multiple rsyncs running in parallel than running them one after the other because rsync is single threaded and the overhead for ssh and file checking etc. is huge. So it usually makes no sense to wait for one host to complete before backing up a second host. \\
 You could also define multiple backup jobs for the same host but different directories on the host, to increase the speed of large backups. ​ You could also define multiple backup jobs for the same host but different directories on the host, to increase the speed of large backups. ​
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 +if you are looking for a solution to speed up an rsync copy process with parallel rsync invocations,​ take a look at my [[parallel_rsync]] article. Sadly the function I wrote there does not help in speeding up incremental backups at all (in contrary, it adds more overhead and hence makes an incremental backup even slower!). ​
  
 at the end of a successful backup, a rotation is made and old backups are being deleted where appropriate. also a summary email is sent to the admin. ​ at the end of a successful backup, a rotation is made and old backups are being deleted where appropriate. also a summary email is sent to the admin. ​