On 2017年08月12日 15:42, Christoph Hellwig wrote:

On Sat, Aug 12, 2017 at 02:10:18AM +0200, Christoph Anton Mitterer wrote:

quoted

Qu Wenruo wrote:

quoted

Although Btrfs can disable data CoW, nodatacow also disables data
checksum, which is another main feature for btrfs.

Then decoupling of the two should probably decoupled and support for
notdatacow+checksumming be implemented?!

And how are you going to write your data and checksum atomically when
doing in-place updates?

Exactly, that's the main reason I can figure out why btrfs disables 
checksum for nodatacow.

Thanks,
Qu

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