Am 28.08.2012 21:26, schrieb Les Mikesell: > On Tue, Aug 28, 2012 at 2:04 PM, John R Pierce <pierce at hogranch.com> wrote: >> On 08/28/12 11:41 AM, Les Mikesell wrote: >>> On Tue, Aug 28, 2012 at 3:03 AM, Rainer Traut<tr.ml at gmx.de> wrote: >>>>>>> >>>>> Rsync is of no use for us. We have mainly big Domino .nsf files which >>>>> only change slightly. So rsync would not be able to make many hardlinks. :) >>> Rdiff-backup might work for this since it stores deltas. Are you >>> doing something to snapshot the filesystem during the copy or are >>> these just growing logs where consistency doesn't matter? >> >> NSF files are a proprietary database format used by Lotus Notes and >> Domino, very complex, there's a pile of versions, and they are totally >> opaque. Pretty sure that if they are being accessed or updated while >> being copied the copy is invalid, so yes, some form of snapshotting is >> required. >> >> commercial backup software uses Domino/Notes APIs to do incremental >> backups, for example >> http://www.symantec.com/business/support/index?page=content&id=TECH46513 > > If there is a command-line way to generate an incremental backup file, > backuppc could run it via ssh as a pre-backup command. > Yes, there is commercial software to do incremental backups but I do not know of commandline options to do this. Maybe anyone? Les is right, I stop the server, take the snapshot, start the server and do the xdelta on the snapshot NSF files. Having that minimal downtime is ok and acknowledged by the customer.