[Last Call] Learn about multicloud storage options and how to improve your company's cloud strategy. Register Now

x
?
Solved

Suggestions regarding copying files in UNIX

Posted on 2011-09-08
9
Medium Priority
?
235 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
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 4
  • 4
9 Comments
 
LVL 9

Expert Comment

by:parparov
ID: 36514133
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 62

Expert Comment

by:gheist
ID: 36530134
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
ID: 36531521
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
What does it mean to be "Always On"?

Is your cloud always on? With an Always On cloud you won't have to worry about downtime for maintenance or software application code updates, ensuring that your bottom line isn't affected.

 
LVL 9

Expert Comment

by:parparov
ID: 36531554
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
 

Author Comment

by:new_perl_user
ID: 36531613
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
ID: 36531700
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
ID: 36532068
Thank you Will try..
0
 

Author Comment

by:new_perl_user
ID: 36543539
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 2000 total points
ID: 36543679
from rsync's manual:
            --files-from=FILE       read list of source-file names from FILE

Open in new window

0

Featured Post

Concerto's Cloud Advisory Services

Want to avoid the missteps to gaining all the benefits of the cloud? Learn more about the different assessment options from our Cloud Advisory team.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This tech tip describes how to install the Solaris Operating System from a tape backup that was created using the Solaris flash archive utility. I have used this procedure on the Solaris 8 and 9 OS, and it shoudl also work well on the Solaris 10 rel…
Every server (virtual or physical) needs a console: and the console can be provided through hardware directly connected, software for remote connections, local connections, through a KVM, etc. This document explains the different types of consol…
Learn how to get help with Linux/Unix bash shell commands. Use help to read help documents for built in bash shell commands.: Use man to interface with the online reference manuals for shell commands.: Use man to search man pages for unknown command…
Learn how to navigate the file tree with the shell. Use pwd to print the current working directory: Use ls to list a directory's contents: Use cd to change to a new directory: Use wildcards instead of typing out long directory names: Use ../ to move…

650 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