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Full Discussion: scp or rsync multiple files in parallel from a remote host
Top Forums Shell Programming and Scripting scp or rsync multiple files in parallel from a remote host Post 302682621 by jim mcnamara on Monday 6th of August 2012 01:50:50 PM
Old 08-06-2012
This will try to send all of the files:
Code:
RHOST=srv245005
CCMD="ls /db/remote_backup_area"
 
for BackupFile in 'ssh -q oracle@${RHOST} ${CCMD}'; do
        echo "attempting to copy file: " $BackupFile
 
        scp -pq $hostname:/db/remote_backup_area/$file /db/local_dump_area &
 
        # or use rsync

done
wait
exit

which can swamp the connection. This sends 10 files at a go

Code:

cnt=1
RHOST=srv245005
CCMD="ls /db/remote_backup_area"
 
for BackupFile in 'ssh -q oracle@${RHOST} ${CCMD}'; do
        echo "attempting to copy file: " $BackupFile
         
        scp -pq $hostname:/db/remote_backup_area/$file /db/local_dump_area &
        cnt=$(( $cnt + 1 ))
        if [ cnt -eq 10 ] then
           wait
           cnt=1
        fi

done
wait
exit

Change the "10" to something that is reasonable

If you want some kind of TTY ouput you cannot do the above, you have to write to a file on the scp command line.
Code:
( 
  echo "starting $file `date`" >/tmp/${file}.log
  scp -pq $hostname:/db/remote_backup_area/$file /db/local_dump_area 2>>/tmp/${file}.log
  echo "done $file `date`" >>/tmp/${file}.log
) &

This mess replaces the one line scp command in the earlier examples. And creates lots of logfiles.
Last edited by jim mcnamara; 08-06-2012 at 02:57 PM..
This User Gave Thanks to jim mcnamara For This Post:
Big_Jeffrey
 

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LEARN ABOUT OPENSOLARIS

rsync_selinux

rsync_selinux(8)					rsync Selinux Policy documentation					  rsync_selinux(8)

NAME

       rsync_selinux - Security Enhanced Linux Policy for the rsync daemon

DESCRIPTION

       Security-Enhanced Linux secures the rsync server via flexible mandatory access control.

FILE_CONTEXTS
       SELinux	requires  files to have an extended attribute to define the file type.	Policy governs the access daemons have to these files.	If
       you want to share files using the rsync daemon, you must label the files and directories public_content_t.  So if  you  created	a  special
       directory /var/rsync, you would need to label the directory with the chcon tool.

       chcon -t public_content_t /var/rsync

       To make this change permanent (survive a relabel), use the semanage command to add the change to file context configuration:

       semanage fcontext -a -t public_content_t "/var/rsync(/.*)?"

       This command adds the following entry to /etc/selinux/POLICYTYPE/contexts/files/file_contexts.local:

       /var/rsync(/.*)? system_u:object_r:publix_content_t:s0

       Run the restorecon command to apply the changes:

       restorecon -R -v /var/rsync/

SHARING FILES

       If  you	want  to  share  files	with multiple domains (Apache, FTP, rsync, Samba), you can set a file context of public_content_t and pub-
       lic_content_rw_t.  These context allow any of the above domains to read the content.  If you want a particular domain to write to the  pub-
       lic_content_rw_t domain, you must set the appropriate boolean.  allow_DOMAIN_anon_write.  So for rsync you would execute:

       setsebool -P allow_rsync_anon_write=1

BOOLEANS

       system-config-selinux is a GUI tool available to customize SELinux policy settings.

AUTHOR

       This manual page was written by Dan Walsh <dwalsh@redhat.com>.

SEE ALSO

       selinux(8), rsync(1), chcon(1), setsebool(8), semanage(8)

dwalsh@redhat.com						    17 Jan 2005 						  rsync_selinux(8)
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