[CentOS] Deduplication data for CentOS?

[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.

-- 
  Les Mikesell
    lesmikesell at gmail.com