On Sunday 01 November 2009 12:24:23 James Harper wrote:
> > > One thing the BackupRead stream has in it is details about sparse
>
> files,
>
> > > specifically the sparse areas. A Windows system that was 5.92G when
>
> backed
>
> > > up is suddenly 7.60G when restored, presumably the lack of Bacula's
> > > understanding of BackupRead sparse streams is the cause of this.
> >
> > Yes, currently, the only part of the BackupRead that Bacula looks at
>
> when
>
> > restoring a BackupRead to a non-Windows system is the actual data
>
> stream all
>
> > other streams are ignored.
> >
> > In general, I am not very keen on Bacula digging into OS structures,
>
> because
>
> > they are very system dependent, and they can change from OS to OS --
>
> meaning
>
> > a bigger support load on developers.  However, in the case of the data
> > stream, it is a necessary "evil" so that Windows users can get back
>
> their
>
> > data even if the Windows system is not available.
>
> Hmmm... I wonder if adding some sort of BackupWrite functionality to
> ntfs-3g is a better way to go... that would solve a lot of problems -
> bacula could just follow pretty much the same calls as it does for
> Windows. The Windows Backup Stream complexity would be in ntfs-3g (the
> filesystem), where it belongs.

By the way, if ntfs-3g works well, it would be a really nice way to do the 
Windows bare metal restore, which is what I imagine your main interest in 
ntfs-3g is.


>
> James



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