Jon Mason wrote:
Hey Vlad,
I wanted to get you the NFS-RDMA backport patches I have queued up prior
to rc1 being built. I have this patch (RHEL5.2), as well as 2.6.22, and
2.6.25 (which I will be sending in separate e-mails).
Thanks Jon and Tom for doing this work!
This patch contains the changes necessary to get NFS-RDMA 99% working on
RHEL5.2. It 100% passes of the connectathon testcases when using RDMA.
When using TCP, 1 testcase hangs (for which I've found a code hack to
work around, but not a fix). The testcase is the 30MB transfer in the
"special" tests, and is 100% reproducible.
With the attached patch, you can now enable the nfs-rdma-mod by default
and run it through your nightly build tests.
Just to clarify: Enable nfs-rdma-mod on rhel5.2, 2.6.22, and 2.6.18
only. Also we'll have to address any hw platform issues that come up
during your builds.
There is one problem with nfs-utils, which will necessitate including it
in the OFED distribution. Currently, there is a check for the kernel
version you are running when running the mount.nfs command. This check
is to verify if one is running a kernel greater than 2.6.22. If not,
then it will not allow a mount with RDMA as an option. In earlier
versions, there was an override option of "-i". This has since been
removed for an unknown reason (but if you run `mount.nfs`, you can see
that they forgot to remove 'i' from "usage" options). I will send them
a patch to fix this in the latest version, but this will be a problem
that will require it to be built locally until such a time as that is
pulled in.
We'll need to ship nfs-utils that works for nfsrdma on the older kernels
as part of ofed-1.4.1. Stay tuned for this.
Steve.
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