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Full Discussion: Need help on rsync
Top Forums Shell Programming and Scripting Need help on rsync Post 302961155 by gandolf989 on Tuesday 24th of November 2015 01:28:50 PM
Old 11-24-2015
If you had several directories under the main directory about the same size, you could run several rsync commands at the same time. There is a chance that with a full 10GB connection you can get the files transferred in one night. It depends on how many files and how large each file is. IMHO, you would be better off if you have a smaller number of files that are large compared to a huge number of small files. You should use the compress flag, --compress to speed the transfer of files.

I might not even use cron for the transfer, I would probably just log in when I want the transfer to start and run the rsync with nohup and an & amersand at the end. You can then create a cron job to email the nohup.out file every hour if you want. But the transfer might finish in one night. Of course if you have millions of tiny files, it could take longer. Then just log in before the job is supposed to finish and if it is still running kill it.

But if you manually start it you can know the pid at the start, you can even script the cron job to kill the process at the beginning since you know the pid. Just don't leave the job running because the pid will get reused and you will have a job that is randomly killing any job with that pid.

If you are worried about overloading the network you can also try rsyncing to removable storage, then move the drive to the server where it needs to be. Another option would be that if you are using SAN, you can do a SAN snapshot to create another SAN volume with the same data.
 

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LEARN ABOUT DEBIAN

ocf_heartbeat_rsyncd

OCF_HEARTBEAT_RSYNCD(7) 					OCF resource agents					   OCF_HEARTBEAT_RSYNCD(7)

NAME

       ocf_heartbeat_rsyncd - Manages an rsync daemon

SYNOPSIS

       rsyncd [start | stop | monitor | meta-data | validate-all]

DESCRIPTION

       This script manages rsync daemon

SUPPORTED PARAMETERS

       binpath
	   The rsync binary path. For example, "/usr/bin/rsync" (optional, string, default rsync)

       conffile
	   The rsync daemon configuration file name with full path. For example, "/etc/rsyncd.conf" (optional, string, default /etc/rsyncd.conf)

       bwlimit
	   This option allows you to specify a maximum transfer rate in kilobytes per second. This option is most effective when using rsync with
	   large files (several megabytes and up). Due to the nature of rsync transfers, blocks of data are sent, then if rsync determines the
	   transfer was too fast, it will wait before sending the next data block. The result is an average transfer rate equaling the specified
	   limit. A value of zero specifies no limit.  (optional, string, no default)

SUPPORTED ACTIONS

       This resource agent supports the following actions (operations):

       start
	   Starts the resource. Suggested minimum timeout: 20s.

       stop
	   Stops the resource. Suggested minimum timeout: 20s.

       monitor
	   Performs a detailed status check. Suggested minimum timeout: 20s. Suggested interval: 60s.

       validate-all
	   Performs a validation of the resource configuration. Suggested minimum timeout: 20s.

       meta-data
	   Retrieves resource agent metadata (internal use only). Suggested minimum timeout: 5s.

EXAMPLE

       The following is an example configuration for a rsyncd resource using the crm(8) shell:

	   primitive p_rsyncd ocf:heartbeat:rsyncd 
	     op monitor depth="0" timeout="20s" interval="60s"

SEE ALSO

       http://www.linux-ha.org/wiki/rsyncd_(resource_agent)

AUTHOR

       Linux-HA contributors (see the resource agent source for information about individual authors)

resource-agents UNKNOWN 					    03/09/2014						   OCF_HEARTBEAT_RSYNCD(7)
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