Re: RMDA Bug?

["Mason-Williams, Gabryel (DLSLtd,RAL,LSCI)" <gabryel.mason-williams@xxxxxxxxxxxxx>]

1. The current problem is that it still sending data over the ethernet instead of ib.
   
2. [global]
   
   fsid=xxxx
   
   mon_initial_members = node1, node2, node3
   
   mon_host = xxx.xx.xxx.ab,xxx.xx.xxx.ac, xxx.xx.xxx.ad
   
   auth_cluster_required = cephx
   
   auth_service_required = cephx
   
   auth_client_required = cephx
   
   public_network = xxx.xx.xxx.0/24
   
   cluster_network = xx.xxx.0.0/16
   
   ms_cluster_type = async+rdma
   
   ms_type = async+rdma
   
   ms_public_type = async+posix
   
   [mgr]
   
   ms_type = async+posix
3. The ceph cluster is deployed using ceph-deploy then once up all of the daemons are turned off the rdma cluster config is then sent around then once that is complete the daemons are turned back on. The ulimit is set to unlimited, LimitMEMLOCK=infinity is set on the ceph-disk@.service, ceph-mds@.service, ceph-mon@.service, ceph-osd@.service, ceph-radosgw@.service, aswell as PrivateDevices=no on ceph-mds@.service, ceph-mon@.service and ceph-radosgw@.service. The ethernet mtu is set to 1000
   

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From: Liu, Changcheng <changcheng.liu@xxxxxxxxx>
Sent: 30 October 2019 12:24
To: Mason-Williams, Gabryel (DLSLtd,RAL,LSCI) <gabryel.mason-williams@xxxxxxxxxxxxx>
Cc: dev@xxxxxxx <dev@xxxxxxx>
Subject: Re: RMDA Bug?

 

1. What's the problem do you hit when using RDMA in 14.2.4? Any log shows the error?
2. What's your ceph.conf?
3. How do you deploy the ceph cluster? RDMA need lock some memory. So,
it needs change some system configuration to meet with this requirement?

On 11:21 Wed 30 Oct, Gabryel Mason-Williams wrote:
> Liu, Changcheng wrote:
> > On 07:31 Mon 28 Oct, Mason-Williams, Gabryel (DLSLtd,RAL,LSCI) wrote:
> > >     I am using ceph version 12.2.8
> > >     (ae699615bac534ea496ee965ac6192cb7e0e07c0) luminous (stable).
> > > 
> > >     I have not checked the master branch do you think this is an issue in
> > >     luminous that has been removed in later versions?      I haven't hit problem
> > on master branch. Ceph/RDMA changed a lot
> >       from luminous to master branch.
> >
> >       Is below configuration really needed in luminous/ceph.conf?
> > >     ms_async_rdma_local_gid = xxxx          On master branch, this
> > parameter is not needed at all.
> > B.R.
> > Changcheng
> > >      __________________________________________________________________
>
> Thanks, the issue of the OSD's falling over seems to have gone away updating to Nautilus 14.2.4. However, I am still unable to get it to properly communicate over RDMA even with removing ms_async_rdma_local_gid.
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