On Thursday 26 March 2009 09:47:18 Graham Keeling wrote:
> On Wed, Mar 25, 2009 at 06:38:19PM +0100, Ulrich Leodolter wrote:
> > Hello,
> >
> > below u can see VirtualFull backup job log and mysql job entry.
> >
> > can someone explain why "Start time" and "End Time" are copied
> > from last incremental backup ?
>
> I believe the idea is that a VirtualFull turns the last Incremental into
> a Full, on which you can base new Differentials and Incrementals.
>
> The dates then represent the dates at which files were actually backed up,
> rather than the dates at which the VirtualFull ran. Which makes a certain
> kind of sense, since all the code doing restores (for example) looks at the
> dates to decide what files to select.
> But I might be wrong. :)
>
>

Yes, this is correct.  If we set the date to the actual current Job run time, 
then there would be a "hole" in the backup timing, and the next incremental 
backup would not backup files changed since the last incremental included the 
Virtual Full ...

Example:

Full -- day 1
Incremental -- day 2
Virtual Full -- day 10

Now you do not want the next incremental to start backing up from "day 10" but 
you want it to backup from "day 2".

Regards,

Kern

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