[vox-tech] Tar, MySQL, and cron-ed backups

[Mark K. Kim]

Never mind.  Mitch is right.  Checked the tar sourcecode.

-Mark


On Fri, 5 Dec 2003, Mark K. Kim wrote:

> On Fri, 5 Dec 2003, Mitch Patenaude wrote:
>
> > > * some combination of these?
> >
> > yes. if it was half-way through reading the file.. then the first half
> > is the old file, and the second half is the new files.  If more than
> > one change was made, then more than one file is there.
>
> Hooooooooold on...  are you *sure*?  As I recall, once a file is opened,
> it is guaranteed to stay in that form until you close it.  Perhaps that's
> not the case for big files as I don't deal much with multitera-size
> databases, but at least for small files, the file integrity is guaranteed
> by the kernel once you've obtained its handle from opening the file.  I
> think it's more likely that tar is complaining not about a single file
> being modified in the middle of reading it, but the integrity of the
> entire archive as a whole, in case there are inter-file dependencies.
>
> Just my 2 cents...
>
> -Mark
>
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Mark K. Kim
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