[adding ceph-devel]

On Thu, 17 Nov 2016, Marov Aleksey wrote:
> Hello Sage
> 
> My name is Alex. I need some help with resolving issue with ceph. I have
> been testing ceph with rdma messenger and I got an error
> 
> src/log/SubsystemMap.h: 62: FAILED assert(sub < m_subsys.size())
> 
> I have no idea what it means. I noticed that you was the last one who
> committed in SubsystemMap.h so I think you have some understanding of this
> condition in assert
> 
> bool should_gather(unsigned sub, int level) {
> š assert(sub < m_subsys.size());
> š return level <= m_subsys[sub].gather_level ||
> ššš level <= m_subsys[sub].log_level;
> }
> 
> This error occurs only when I use fio benchmark to test rbd. When I use "rbd
> bench-write ..."š it is ok. But fio is much mire flexible . In any case I
> think it is not good to get any assert.
> 
> Can you explain this for me please, or give a hint where to investigate my
> trouble.

Can you generate a core file, and then use gdb to capture the output of 
'thread apply all bt'?

Thanks-
asge