I've been testing btrfs send/receive, and to my surprise, the +C (nocow) attribute I have set on directory for virtual machines images is not preserved. Is this expected? Having found no information about this issue, I'm asking here. Info: $ uname -a Linux asusntb 3.15.8-1-ARCH #1 SMP PREEMPT Fri Aug 1 08:51:42 CEST 2014 x86_64 GNU/Linux $ btrfs --version Btrfs v3.14.2-dirty Both source and target btrfs filesystems are mounted with the same mount options: rw,nosuid,nodev,noatime,compress=lzo,space_cache,autodefrag,commit=60 $ lsattr ~/virtual_machines/ ---------------C virtual_machines/archlinux-btrfs.raw ---------------C virtual_machines/archlinux.raw ---------------C virtual_machines/winxp.raw $ lsattr /media/backup/virtual_machines/2014-08-06/ ---------------- /media/backup/virtual_machines/2014-08-06/archlinux-btrfs.raw ---------------- /media/backup/virtual_machines/2014-08-06/archlinux.raw ---------------- /media/backup/virtual_machines/2014-08-06/winxp.raw Regards, -- jlk
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