NFS over RMDA

[poma]

On 25.11.2014 11:14, Ian Chapman wrote:
> Hi,
> 
> Is anyone successfully running NFS over RDMA on Fedora 20+?
> 
> I've edited /etc/sysconfig/nfs and set the the following config paramter.
> 
> RDMA_PORT=20049
> 
> Upon restarting the nfs server I get the following:
> 
> modprobe: FATAL: Module svcrdma not found
> /usr/libexec/nfs-utils/scripts/nfs-server.postconfig: line 12: echo: 
> write error: Protocol not supported
> 
> So it looks like the kernel module svcrdma is missing and the last 
> kernel to have it was 3.11.10-301.fc20. The postconfig script belongs to 
> nfs-utils.
> 
> Is svcrdma intentionally not built in the current kernels or has it been 
> replaced by something else?
> 

$ file *
kernel-3.14.25-100.fc19.x86_64.rpm:          RPM v3.0 bin i386/x86_64 kernel-3.14.25-100.fc19
kernel-3.15.0-0.rc0.git12.1.fc21.x86_64.rpm: RPM v3.0 bin i386/x86_64 kernel-3.15.0-0.rc0.git12.1.fc21
kernel-3.15.0-0.rc0.git9.1.fc21.x86_64.rpm:  RPM v3.0 bin i386/x86_64 kernel-3.15.0-0.rc0.git9.1.fc21

$ deco *
236767 blocks
kernel-3.14.25-100.fc19.x86_64/
254129 blocks
kernel-3.15.0-0.rc0.git12.1.fc21.x86_64/
251879 blocks
kernel-3.15.0-0.rc0.git9.1.fc21.x86_64/

$ find -name svcrdma.ko*
./kernel-3.14.25-100.fc19.x86_64/lib/modules/3.14.25-100.fc19.x86_64/kernel/net/sunrpc/xprtrdma/svcrdma.ko
./kernel-3.15.0-0.rc0.git9.1.fc21.x86_64/lib/modules/3.15.0-0.rc0.git9.1.fc21.x86_64/kernel/net/sunrpc/xprtrdma/svcrdma.ko

$ find -name config* -exec grep -H CONFIG_SUNRPC_XPRT_RDMA_SERVER {} \;
./kernel-3.15.0-0.rc0.git12.1.fc21.x86_64/boot/config-3.15.0-0.rc0.git12.1.fc21.x86_64:# CONFIG_SUNRPC_XPRT_RDMA_SERVER is not set


  ┌───────────────────── RPC over RDMA Server Support ──────────────────────┐
  │ CONFIG_SUNRPC_XPRT_RDMA_SERVER:                                         │  
  │                                                                         │  
  │ This option allows the NFS server to support an RDMA-enabled            │  
  │ transport.                                                              │  
  │                                                                         │  
  │ To compile RPC server RDMA transport support as a module,               │  
  │ choose M here: the module will be called svcrdma.                       │  
  │                                                                         │  
  │ If unsure, say N.                                                       │  
  │                                                                         │  
  │ Symbol: SUNRPC_XPRT_RDMA_SERVER [=n]                                    │  
  │ Type  : tristate                                                        │  
  │ Prompt: RPC over RDMA Server Support                                    │  
  │   Location:                                                             │  
  │     -> File systems                                                     │  
  │       -> Network File Systems (NETWORK_FILESYSTEMS [=y])                │  
  │   Defined at net/sunrpc/Kconfig:61                                      │  
  │   Depends on: NETWORK_FILESYSTEMS [=y] && SUNRPC [=m] && \              │  
  │ INFINIBAND [=m] && INFINIBAND_ADDR_TRANS [=y]                           │  
  │                                                                         │  
  └─────────────────────────────────────────────────────────────────────────┘