[ofa-general] Re: NFSRDMA connectathon prelim. testing status,

[Tom Tucker]

Vu:

What memory registration model are you using?

Vu Pham wrote:
> Hi Tom,
> 
> I have both nfsrdma client and server on 2.6.29-rc5 kernel, 
> nfs-utils-1.1.4. I'm using both Infinihost III (ib_mthca) and ConnectX 
> (mlx4_ib) HCAs
> I have seen several problems during my testing at NFS Connectathon 2009
> 
> 1. When I used ConnectX (mlx4_ib) HCAs on both client and server, the 
> client can not mount. Talking to Tom Talpey and scanning the code, I saw 
> that xprtrdma module is using ib_reg_phys_mr() and mlx4_ib verbs 
> provider does not have the implementation for this verb.
> If I have client on mlx4_ib and server on ib_mthca, I hit the following 
> crash because of bad error handling in xprtrdma (see file attached - 
> mlx4_mount_problem.log)
> 
> Because of this problem, I use InfiniHost III (ib_mthca) for all of my 
> tests at Connectathon
> 
> 2. Testing Linux nfsrdma client against both Linux and OpenSolaris 
> nfsrdma servers, I hit the process hung problem during the 
> connectathon's lock test (seeing sync_page_1.log and sync_page_2.log 
> attached files). I can only reproduce it when I ran connectathon more 
> than 500 iterations (-N 1000)
> I can NOT reproduce the problem with nfs client/server over IPoIB
> 
> 3. Testing openSolaris nfsrdma client against linux nfsrdma server, I 
> hit the following BUG_ON() right away(see file attached - svcrdma_send.log)
> 
> thanks,
> -vu
>