Solved

Suggestions regarding copying files in UNIX

Posted on 2011-09-08
9
218 Views
Last Modified: 2016-02-10
Hi,

Right now we are copying files from windows to UNIX using R-sync utility . But  sometimes it is getting hung up due to overload of data.

 We are using R-sync to compare checksum and date of the files to copy over.

Is  there any other best utility to replace R-sync.
0
Comment
Question by:new_perl_user
  • 4
  • 4
9 Comments
 
LVL 9

Expert Comment

by:parparov
Comment Utility
rsync has an option --bwlimit=XXXX to limit its data transfer rate. The limit is given in kilobytes. Use --bwlimit=10000 to limit to 10 (9.7 to be precise) Mbyte/sec.
0
 
LVL 61

Expert Comment

by:gheist
Comment Utility
rsync will only access disk and do very little over network connection if file sets (or their big parts) are same, but keeping reading all data at full disk speed at the same time.
If this influences the rest of the system you can "renice" rsync process on UNIX.

Please tell us version of FreeBSD you are using, version of rsync, and version of SSH.
Also would be nice to know command line used to invoke rsync if it needs some parameter tuning.
0
 

Author Comment

by:new_perl_user
Comment Utility
Hi.

Below is the command we are using and invoking it through a script.

$RSYNC ${DRYRUN} ${OPTIONS} --filter="exclude ${TEMPDIR}" -e "ssh -i ${KEY}" ${STRING}:${DIR}/ ${LOCALDIR} |$AEE ${TMPLOG} >> ${LOGFILE} 2>&1

Is there a way ( like kind of alert messages) to know when the rsync breaks /stops copying files.
0
 
LVL 9

Expert Comment

by:parparov
Comment Utility
we need to see what ${OPTIONS} are during the actual run.
To see if rsync exited abnormally, test $? value after rsync's execution. If everything was alright, then it is 0, otherwise it contains the error code of the problem rsync encountered.
0
IT, Stop Being Called Into Every Meeting

Highfive is so simple that setting up every meeting room takes just minutes and every employee will be able to start or join a call from any room with ease. Never be called into a meeting just to get it started again. This is how video conferencing should work!

 

Author Comment

by:new_perl_user
Comment Utility
options being used are as follows.

OPTIONS=' -rltzc --chmod=u+rwx,go=rx -u -K -v -i  --exclude=Thumbnail --exclude=Thumbs.db '

And where should we actually use this "test $?".  Will it be able to write to a log file.
0
 
LVL 9

Expert Comment

by:parparov
Comment Utility
you may add the --bwlimit I posted earlier to OPTIONS sequence.
Right after the rsync execution, add something like that:
if [ ! $? ]
  then
	echo "`date` Rsync exited abnormally with code $?" >> /your/log/file/location
fi

Open in new window

0
 

Author Comment

by:new_perl_user
Comment Utility
Thank you Will try..
0
 

Author Comment

by:new_perl_user
Comment Utility
Hi,
One more quick question. Will the R-sync be able to copy files  by reading a file with all the filenames it should copy.
0
 
LVL 9

Accepted Solution

by:
parparov earned 500 total points
Comment Utility
from rsync's manual:
            --files-from=FILE       read list of source-file names from FILE

Open in new window

0

Featured Post

How your wiki can always stay up-to-date

Quip doubles as a “living” wiki and a project management tool that evolves with your organization. As you finish projects in Quip, the work remains, easily accessible to all team members, new and old.
- Increase transparency
- Onboard new hires faster
- Access from mobile/offline

Join & Write a Comment

When you do backups in the Solaris Operating System, the file system must be inactive. Otherwise, the output may be inconsistent. A file system is inactive when it's unmounted or it's write-locked by the operating system. Although the fssnap utility…
Installing FreeBSD… FreeBSD is a darling of an operating system. The stability and usability make it a clear choice for servers and desktops (for the cunning). Savvy?  The Ports collection makes available every popular FOSS application and packag…
Learn several ways to interact with files and get file information from the bash shell. ls lists the contents of a directory: Using the -a flag displays hidden files: Using the -l flag formats the output in a long list: The file command gives us mor…
This video shows how to set up a shell script to accept a positional parameter when called, pass that to a SQL script, accept the output from the statement back and then manipulate it in the Shell.

728 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

10 Experts available now in Live!

Get 1:1 Help Now