On 2019-01-26 7:07 a.m., waxhead wrote:


> 
> What effect exactly the write hole might have on *data* is not pointed
> out in detail, but I would imagine that for some it might be desirable
> to run a btrfs filesystem with metadata in "RAID" 1/10 mode and data in
> "RAID" 5/6.
> 

One big problem here is that neither Raid 1 nor Raid 10 currently have
configurable # of Mirrors, (N devices), so it's impossible to get 2
device failure redundancy.  (No point in using Raid 6 then, that's just
wasting space.)