On 18/09/2018 06.21, Chris Murphy wrote: > b. The bootloader code, would have to have sophisticated enough Btrfs > knowledge to know if the grubenv has been reflinked or snapshot, > because even if +C, it may not be valid to overwrite, and COW must > still happen, and there's no way the code in GRUB can do full blow COW > and update a bunch of metadata. And what if GRUB ignore the possibility of COWing and overwrite the data ? Is it a so big problem that the data is changed in all the snapshots ? It would be interested if the same problem happens for a swap file..... BR G.Baroncelli -- gpg @keyserver.linux.it: Goffredo Baroncelli <kreijackATinwind.it> Key fingerprint BBF5 1610 0B64 DAC6 5F7D 17B2 0EDA 9B37 8B82 E0B5
