on 30.08.2016 at 02:48 Qu Wenruo wrote :
> Not the first, but although still few.
> There is a xfstest case submitted for it, and even before the test
case, there are already report from IRC.
> Anyway, I'll add Cc for you after the new IRC patch is out.
Please count me in.
I have this occur when I'm backing up a file server I use to hold
reflinked incrementals from client machines. Backing up from clients to
server is very quick (mere seconds, no incrementals there), but backup
of the server volume itself is very slow even with limited changes.
With clone detection enabled, that backup takes nearly seven hours.
Sending a complete volume to a blank filesystem (so no reflinks are
present at the destination) is a matter of only a few minutes.
Many thanks to Hermann Schwarzler whose suggestion led me onto this.
J. Hart
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