On Mon, Oct 28, 2013 at 10:08 PM, Sharuzzaman Ahmat Raslan <[email protected]> wrote: > Hi, > > I have implemented BackupPC for my customer. > > Initially, the backup transport is SMB, but recently, I noticed a lot of > machine backup (full and incremental) is not able to complete in 8 hours, > due to large number of file, and big file size. > > Last week, I installed DeltaCopy (rsycnd server for Windows) on one machine, > and change the backup transport to rysncd. The backup runs well. > > But today, I noticed, when BackupPC is running a full backup on the machine > that have rsyncd, it still takes 8 hours to do full backup. > > Which is I considered weird, because rsync suppose to compare that full > backup, with the previous full backup (or previous full + incremental), so > that only modified file is transferred. > > That is my expectation when I plan to use rsyncd. > > Any explanation why BackupPC is not running in this way? Any configuration > that I can changed to make it work like what I expect? >
Rsync will only transfer the changed data, but in full runs the contents of the files are read at both ends and compared with block checksums, so it takes some time. Incrementals runs will quickly skip files where the file timestamps and lengths are identical. See the section on 'Rsync checksum caching' in http://backuppc.sourceforge.net/faq/BackupPC.html regarding a way to avoid having to read/uncompress on the server side after 2 fulls have completed, but the data is always read on the target side. -- Les Mikesell [email protected] ------------------------------------------------------------------------------ Android is increasing in popularity, but the open development platform that developers love is also attractive to malware creators. Download this white paper to learn more about secure code signing practices that can help keep Android apps secure. http://pubads.g.doubleclick.net/gampad/clk?id=65839951&iu=/4140/ostg.clktrk _______________________________________________ BackupPC-users mailing list [email protected] List: https://lists.sourceforge.net/lists/listinfo/backuppc-users Wiki: http://backuppc.wiki.sourceforge.net Project: http://backuppc.sourceforge.net/
