The advantages of dump over dd is that 1) dump only copies actual data, dd copies empty space (full silver of image) 2) dump will defrag on restore, dd carries fragmentation over 3) dump allows different sized source/destination as long as the destination has enough room for actual content, dd will allow destinations larger than source but requires other tools to resize resultant filesystem
Big advantage of dd is that it is fileystem type agnostic while dump only works on ext2/3. Here is a command to copy a filesystem. It assumes you have a source filesystem at /var/lib/backuppc and a destination filesystem (newly created) at /mnt: dump -0 -f - /var/lib/backuppc | (cd /mnt; restore -r -f - ) I've used this on Solaris, but havent tested it under Linux. You may want to setup a test case and validate prior to trying something as large and complex as bacukppc. If /var/lib/backuppc is part of the root filesystem and you are trying to separate it you will need to change the '/var/lib/backuppc' to '/' and then cleanup the /mnt by: cd /mnt rm -r [everything except var] cd /mnt/var/lib/backuppc mv * /mnt cd /mnt rm -r var On 8/7/08, Kurt Tunkko <[EMAIL PROTECTED]> wrote: > Hi, > > > Rich Rauenzahn wrote: > > > Yet another option often overlooked is using 'dump' instead of dd. > > > could you give the correct syntax in order to copy /var/lib/backuppc > using dump. > > > - Kurt > > > ------------------------------------------------------------------------- > This SF.Net email is sponsored by the Moblin Your Move Developer's challenge > Build the coolest Linux based applications with Moblin SDK & win great prizes > Grand prize is a trip for two to an Open Source event anywhere in the world > http://moblin-contest.org/redirect.php?banner_id=100&url=/ > _______________________________________________ > BackupPC-users mailing list > BackupPC-users@lists.sourceforge.net > List: https://lists.sourceforge.net/lists/listinfo/backuppc-users > Wiki: http://backuppc.wiki.sourceforge.net > Project: http://backuppc.sourceforge.net/ > -- Jonathan Craig ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ BackupPC-users mailing list BackupPC-users@lists.sourceforge.net List: https://lists.sourceforge.net/lists/listinfo/backuppc-users Wiki: http://backuppc.wiki.sourceforge.net Project: http://backuppc.sourceforge.net/
