On Fri, Oct 01, 2010 at 09:39:49AM -0500, Wayne Walker wrote: > BackupPC uses rsync as a transport. Does it use any of rsync's smarts > to prevent downloading unchanged files? If I run 2 full backups back > to back, does it pull the entire 90 GB both times? > > Currently I use this (scripted) and nightly fulls are only 1 GB of traffic > (for 90 GB of data) : > > SRC=20100929-230002 && TGT=20100930-230001 && \ > cd /data/backup && \ > cp -al $SRC/. $TGT && rsync -avPHxz --bwlimit 500 --delete > backup.axzas.com:/data/backup/$TGT/. /data/backup/$TGT/. > > Is there a way to get BackupPC to do something similar (in that it > doesn't download unchanged files). > > I ask this because I'm importing my existing full backups from the above > system and it's taking roughly 10 hours for each full. The data is on > LOCAL sata drives, old backups on a mirror, BackupPC data on a RAID 5. > > BackupPC is reporting speeds of 1.5 to 3 MB / sec. I'd expect speeds > closer to 50 MB/sec and I would not expect to pull unchanged files.
I've verified that the RAID 5 will write a sustained 75 MB/sec, -- Wayne Walker wwal...@solid-constructs.com (512) 633-8076 Senior Consultant Solid Constructs, LLC ------------------------------------------------------------------------------ Start uncovering the many advantages of virtual appliances and start using them to simplify application deployment and accelerate your shift to cloud computing. http://p.sf.net/sfu/novell-sfdev2dev _______________________________________________ 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/