Brontekst bekijken van Linux rsync

= examples of exclude list =

<pre>
       Here are some examples of exclude/include matching:

       o      "- *.o" would exclude all names matching *.o

       o      "- /foo" would exclude a file (or directory) named foo in the transfer-root directory

       o      "- foo/" would exclude any directory named foo

       o      "- /foo/*/bar" would exclude any file named bar which is at two levels below a directory named foo in the transfer-root directory

       o      "- /foo/**/bar" would exclude any file named bar two or more levels below a directory named foo in the transfer-root directory

       o      The combination of "+ */", "+ *.c", and "- *" would include all directories and C source files but nothing else (see also the --prune-empty-dirs option)

       o      The combination of "+ foo/", "+ foo/bar.c", and "- *" would include only the foo directory and foo/bar.c (the foo directory must be explicitly included or it would be excluded by the "*")

       The following modifiers are accepted after a "+" or "-":

       o      A / specifies that the include/exclude rule should be matched against the absolute pathname of the current item.  For example, "-/ /etc/passwd" would exclude the passwd file any time the transfer was sending files from
              the "/etc" directory, and "-/ subdir/foo" would always exclude "foo" when it is in a dir named "subdir", even if "foo" is at the root of the current transfer.

       o      A ! specifies that the include/exclude should take effect if the pattern fails to match.  For instance, "-! */" would exclude all non-directories.

       o      A C is used to indicate that all the global CVS-exclude rules should be inserted as excludes in place of the "-C".  No arg should follow.

       o      An s is used to indicate that the rule applies to the sending side.  When a rule affects the sending side, it prevents  files  from  being  transferred.   The  default  is  for  a  rule  to  affect  both  sides  unless
              --delete-excluded was specified, in which case default rules become sender-side only.  See also the hide (H) and show (S) rules, which are an alternate way to specify sending-side includes/excludes.

       o      An r is used to indicate that the rule applies to the receiving side.  When a rule affects the receiving side, it prevents files from being deleted.  See the s modifier for more info.  See also the protect (P) and risk
              (R) rules, which are an alternate way to specify receiver-side includes/excludes.

       o      A p indicates that a rule is perishable, meaning that it is ignored in directories that are being deleted.  For instance, the -C optionâs default rules that exclude things like "CVS" and "*.o" are marked as perishable,
              and will not prevent a directory that was removed on the source from being deleted on the destination.
</pre>


= incremental backup script = 

Script to run incremental backups, based on this article: [http://www.mikerubel.org/computers/rsync_snapshots/ http://www.mikerubel.org/computers/rsync_snapshots/]

<source lang="bash">
#!/bin/bash
#
# Create incremental backups of code directories
#
ionice -c3 -p$$

LOCKFILE=/var/run/rsync_backup.pid
LOGFILE=/var/log/rsync_backup.log
BACKUP_ROOT=/backup
DAILY_ROTATE=6
MONTHLY_ROTATE=12

f_LOG() {
  echo "`date`: $@" >>$LOGFILE
  echo "`date`: $@"
}

if [ -e "$LOCKFILE" ];
then
  f_LOG "Process is already running at $(cat $LOCKFILE)"
  exit 1
else
  echo $$ >$LOCKFILE
fi

f_LOG "Start of backup at PID $$"

webdirs=`grep DocumentRoot /etc/apache2/sites-enabled/* | grep -v 000-default | awk '{ print $3 }'`

for webdir in $webdirs
do
  f_LOG "Backing up directory $webdir"
  for (( i=$DAILY_ROTATE; i>=0; i-- ))
  do
    if [ "$i" -eq "$DAILY_ROTATE" ]; then
      if [ -e $BACKUP_ROOT/daily$webdir.$i ]; then
        rm -rf $BACKUP_ROOT/daily$webdir.$i
      fi
      continue
    fi

    if [ -e $BACKUP_ROOT/daily$webdir.$i ]; then
      mv $BACKUP_ROOT/daily$webdir.$i $BACKUP_ROOT/daily$webdir.$((i+1))
    fi
    
    if [ "$i" -eq "0" ]; then
      mkdir -p $BACKUP_ROOT/daily$webdir.$i
      rsync -a --delete --link-dest=$BACKUP_ROOT/daily$webdir.$((i+1)) $webdir/  $BACKUP_ROOT/daily$webdir.$i/
    fi
  done

  if [ "$(date +%d)" -eq "1" ]; then
    f_LOG "Doing monthly rotate"
    for (( i=$MONTHLY_ROTATE; i>=0; i-- ))
    do
      if [ "$i" -eq "$MONTHLY_ROTATE" ]; then
        if [ -e $BACKUP_ROOT/monthly$webdir.$i ]; then
          rm -rf $BACKUP_ROOT/monthly$webdir.$i
        fi
        continue
      fi
  
      if [ -e $BACKUP_ROOT/monthly$webdir.$i ]; then
        mv $BACKUP_ROOT/monthly$webdir.$i $BACKUP_ROOT/monthly$webdir.$((i+1))
      fi
  
      if [ "$i" -eq "0" ]; then
        mkdir -p $BACKUP_ROOT/monthly$webdir.$i/
        rsync -a --delete --link-dest=$BACKUP_ROOT/monthly$webdir.$((i+1)) $webdir/  $BACKUP_ROOT/monthly$webdir.$i/
      fi
    done
  fi
done

rm $LOCKFILE

f_LOG "End of backup"