Re: [rdiff-backup-users] Restructuring an archive

[Ryan How]

Use vshadow + dosdev to assign the snapshot to a drive letter. Then you 
can run rdiff-backup on that snapshot drive

You'll find some handy scripts by googling

heres the main one I followed

http://blogs.msdn.com/adioltean/archive/2006/09/18/761515.aspx

HTH

Ryan



Dom wrote:
> Quoting Chris Wilson <address@hidden>:
>
> > On Thu, 13 Nov 2008, Dominic wrote:
> >
> > > I'm also curious about the additional overhead (in disk space) that is
> > > created by frequent rdiff-backup runs. If one backs up daily, how much
> > > more disk space is used than if one backs up weekly? In theory no more
> > > because 7 x daily incremental diffs have the same info as 1 x weekly
> > > incremental diff.
> >
> > I was running a backup of about 150 GB of data three (home directories)
> > about 3 times a day, and it was taking 8 MB per incremental backup with
> > rdiff-backup 1.0.5, even if nothing had changed. It may well be less 
> > with
> > more recent versions, due to (1) compressed metadata and (2) incremental
> > patches to metadata.
> >
> > Cheers, Chris.
>
> Hi Chris
>
> Thanks for your input. So I reckon that in your case the overhead of 
> having 3x daily as opposed to 1x daily backups is about 4GB per year, 
> which is 3% and so not significant.
>
> In relation to my other question about backing up locked files, my 
> research so far suggests that the solution is to use snapshots: for 
> Linux this means LVM (which fortunately we already use, because our 
> server runs Devil-Linux), and for Windows XP there is a handy utility 
> called vshadow.exe which creates a temporary snapshot which can then 
> be used (I hope) by rdiff-backup.
>
> Cheers, Dominic
>
>
>
>
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