El día sábado, enero 02, 2021 a las 05:06:05p. m. +0000, Rick Macklem escribió: > Just fyi, I've reproduced the problem. > All I did was create a 20Gbyte file > on UFS on a slow (4Gbyte or RAM, > slow spinning disk) laptop. > (The UFS file system is just what the installer creates these days.) > > cp still hasn't finished and is definitely > taking a looott longer than dd did. > > I'll start drilling down later to-day. > > I'll admit doing lots of testing of copy_file_range(2) > with large sparse files, but I may have missed testing > a large non-sparse file. > > rick > ps: I've added Kostik and Kirk to the cc. As the problem seems to be clear now, should I still file a PR? I'm happy to do so. matthias -- Matthias Apitz, ✉ guru_at_unixarea.de, http://www.unixarea.de/ +49-176-38902045 Public GnuPG key: http://www.unixarea.de/key.pub ¡Con Cuba no te metas! «» Don't mess with Cuba! «» Leg Dich nicht mit Kuba an! http://www.cubadebate.cu/noticias/2020/12/25/en-video-con-cuba-no-te-metas/Received on Sat Jan 02 2021 - 17:28:25 UTC
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