On Sat, 2018-03-10 at 23:31 +0500, Roman Mamedov wrote: > QCOW2 would add a second layer of COW > on top of > Btrfs, which sounds like a nightmare. I've just seen there is even a nocow option "specifically" for btrfs... it seems however that it doesn't disable the CoW of qcow, but rather that of btrfs... (thus silently also the checksumming). Does plain qcow2 really CoW on every write? I've always assumed it would only CoW when one makes snapshots or so... Cheers, Chris. -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
