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Full Discussion: Rsync through java program - issues with remote connection failure
Top Forums Shell Programming and Scripting Rsync through java program - issues with remote connection failure Post 302580373 by MVEERA on Thursday 8th of December 2011 09:56:21 AM
Old 12-08-2011
Rsync through java program - issues with remote connection failure
Hi Everybody,

I am running rsync through my java application.

The Java application will sync the files with remote machine. During our connection failure testing we noticed an issue running rsync through java program. The java application which is running at source side is not receiving any error message if there are any connection issues during the sync process.

Brief details about the test scenario:

1. We run the Java Program
2. The java program starts the rsync command and sync the large number of files from source to remote destination
3. During the sync process we run the ps -ef | grep rsync to check whether the processes are running or not at both(source and dest) side. Both side rsync processes are running.
4. We identify the rsync process id at target machine and kill the process with Kill -9 <pid>
5. The java code didn't receive any error message and didn't exit. It just hanged.
6. And also noticed that the rsync process is still running at source side and rsync process is also not printing any log message in the log file.

Note : If we run the rsync command directly (not through java program) , then everything is working fine. When we stop the rsync process at target the source process will be stopped.



Through perl its working fine. Not sure what the problem with java...!!!



I don't have any clues to debug this issue.
Please share your thoughts and pointer to debug.


execuse me if i confused you .


Thanks !!
 

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LEARN ABOUT CENTOS

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 					    06/09/2014						   OCF_HEARTBEAT_RSYNCD(7)
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