Re: zero-length files in snapshots

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Mike Fedyk wrote (ao):
> On Fri, Feb 12, 2010 at 8:32 AM, Josef Bacik <josef@xxxxxxxxxx> wrote:
> > Creating a file is a metadata operation, and _any_ metadata operation has to be
> > committed to disk when the transaction commits in order to maintain a coherent
> > fs. ??Thanks,
> 
> What I still don't understand though is that the create could have
> taken up to 30 seconds to commit and the same for the few bytes of
> data, but a few ms later a snapshot was made and the metadata change
> was there and the data change was not.  Could it have happened that
> the snapshot would not have the newly created file and this was just a
> timing issue that should not be relied upon?
> 
> I'm just wondering why that file was there at all.

I would say that is because the moment the file got created, the
resulting metadata was commited immediately. The data not yet.

	With kind regards, Sander

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