On 01/24/2018 02:02 PM, Chris Mason wrote: > Hi everyone, > > I'm really looking forward to LSF/MM this year. I can bring along a fair amount of data from production about benchmarking and stability. > > We've been expanding our btrfs rollout, and we're also fixing up priority inversions when cgroup IO controllers are put in place. I think we have btrfs fixed up, but ext4 seems to be incompatible with IO controllers due to data=ordered IO. We haven't tried XFS with the controllers yet but I don't think there will be any major blockers there. > > I'm also hoping filesystem slab shrinking gets into the agenda, since we have a few ugly hacks there to keep production happy. Hi, What about the "debugging tools" part of $Subject? thanks, -- ~Randy