On 7 Feb 2018, at 16:44, Randy Dunlap wrote:
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?
We're mostly adapting and extending bpf as we find fun ways to use it
for tracing, error injection etc. I'm more a consumer of other people's
work here, but I'm happy to join in discussions in this area and talk
about the tools we're using most often.
Today I debugged an early ENOSPC problem without even adding a printk.
The future feels weird.
-chris
