Hi Chris, I'm trying to convert btrfs to use the new mount API stuff and I'm finding it hard to work out the relationships between some of the arguments, specifically datacow, datasum and compress*. What I see is that enabling datasum implies enabling datacow and that disabling datacow implies disabling datasum - which seems reasonable. However, selecting compression implies enabling datacow and datasum, and disabling datacow, as one might expect, disables compression - but disabling datasum does not. Is that correct? David
