Ceph » crimson

error log file:
https://gist.github.com/liu-chunmei/37236ed967fcec81cb9d8df22001d730

Can you add to the description:
- exact sha1 tested (with github link if a branch not yet merged)
- vstart.sh command used to start the cluster
- command used to start the client (ceph_test_rados_api_aio_pp in this case, along with any env variables that might matter)
- observations about whether any osds crashed

If you can, please also add output from:

ceph -s
ceph pg dump

And if possible:
- backtraces from any crashes

The above are sort of a baseline for any real attempt to reproduce or fix a bug, it's best to add them to any bug to start with.

I think this because c++20 pull-in and cause crimson+alienstore doesn't work. after that bug fix, I will retest it.