Local and remote back up behave differently

[David Highley]

"Kevin Korb wrote:"
> 
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> I am not sure what you are trying to do here.  -u is not the
> difference between a complete and differential copy.  Rsync always
> skips copying stuff that is already there and hasn't changed.  The -u
> just tells it not to overwrite new files with older versions which is
> something you shouldn't have in a backup anyway.
> 
> The big difference between rsyncing locally vs to a remote system is
> that rsync forces --whole-file when running locally.

Want a complete back up on Mondays and only files that have changed on
the other days, incremental. The script seems to work correctly for
remote back ups, but not local back ups. Local back ups always seem to
be a complete back up.

> 
> On 08/25/13 16:38, David Highley wrote:
> > I have run out of ideas on why the local and remote back ups done
> > with the script below behave differently. The local always seems to
> > be a complete back up while the remotes are delta back ups except
> > on Mondays.
> > 
> > Cron line example: /root/bin/backups /export/home redwood
> > "--exclude='*.sock' --exclude='*cache*'
> > --exclude=/export/home/*/.gvfs"
> > 
> > 
> > #!/bin/bash
> > 
> > # Script for one week incremental rsync back up scheme.
> > 
> > if [ $# -lt 2 ]; then echo "Usage: $name source server [ filters,
> > --exclude ]" >&2 exit 1 fi
> > 
> > trap cleanup 2 3 6 9 10 12 13 15 16 17 18 19 20 23 24 30 31
> > 
> > # Get our script name, the source directory to be transfered, #
> > server to send to, and optional filtering, --exclude. 
> > name=`basename $0` base=`basename $1` source=$1 server=$2 if [ $#
> > -eq 3 ]; then filters=$3 fi
> > 
> > # Day of week, 1 to 7. day=`/bin/date '+%u'`
> > 
> > # Set the options to be used, using -X is not useful with selinux. 
> > # Archive with hard links all attributes and relative paths. # Run
> > verbose, can create a cron log message to big for email. # Day of
> > week, 1 to 7; where Monday is 1. #if [ ${day} -eq 7 ]; then do a
> > full backup if [ ${day} -eq 7 ]; then options='-qaHAR' else 
> > options='-qauHAR' fi
> > 
> > # Signal handler for abort clean up of lock file. cleanup() { echo
> > "Caught Signal removing lock file /tmp/${name}.${base}.${server}"
> > >&2 rm -f /tmp/${name}.${base}.${server} exit 0 }
> > 
> > if [ ! -d "${source}" ]; then echo "Source ${source} not found." 
> > exit 2 fi
> > 
> > # Get this systems hostname and # check if we are backing up to
> > the # system the script is running on. ItIsI=`uname -n` if [
> > "${server}" = "${ItIsI}" ]; then if [ -d /backups ]; then 
> > dest="/backups/${server}" options+=" --backup-dir=${source}.${day}"
> >  else echo "Directory /backups does not exist." exit 3 fi else #
> > Set a time out in case the server goes away. # We are using
> > hostname for the rsync module parameter. dest="${server}::${ItIsI}"
> >  options+=" --contimeout=300 --backup-dir=${source}.${day}" # Test
> > if we can talk to back up server. ping -c 1 ${server} >/dev/null
> > 2>&1 if [ $? -ne 0 ]; then echo "Could not ping server ${server}"
> > >&2 exit 4 fi fi
> > 
> > # Use flock file to prevent overlap per source, ${1}. flock -xn
> > /tmp/${name}.${base}.${server} \ -c "rsync ${options} ${filters}
> > --ignore-errors --delete-excluded --delete --delete-during
> > ${source} ${dest}"
> > 
> > rm -f /tmp/${name}.${base}.${server}
> > 
> > exit 0
> > 
> 
> - -- 
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> 	Kevin Korb			Phone:    (407) 252-6853
> 	Systems Administrator		Internet:
> 	FutureQuest, Inc.		Kevin at FutureQuest.net  (work)
> 	Orlando, Florida		kmk at sanitarium.net (personal)
> 	Web page:			http://www.sanitarium.net/
> 	PGP public key available on web site.
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