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| author | Chuck Lever <chuck.lever@oracle.com> | 2008-06-25 17:24:54 -0400 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2008-07-09 12:09:37 -0400 |
| commit | 40fef8a649e5344bfb6a67a7cc3def3e0dad6448 (patch) | |
| tree | bfcbea1a0cf81ca14d59debb6fb77e83a430b2ab /fs/Kconfig | |
| parent | 8842413aa4c3220ce9313791f99808fc149ca16d (diff) | |
| download | linux-3.10-40fef8a649e5344bfb6a67a7cc3def3e0dad6448.tar.gz linux-3.10-40fef8a649e5344bfb6a67a7cc3def3e0dad6448.tar.bz2 linux-3.10-40fef8a649e5344bfb6a67a7cc3def3e0dad6448.zip | |
SUNRPC: Use only rpcbind v2 for AF_INET requests
Some server vendors support the higher versions of rpcbind only for
AF_INET6. The kernel doesn't need to use v3 or v4 for AF_INET anyway,
so change the kernel's rpcbind client to query AF_INET servers over
rpcbind v2 only.
This has a few interesting benefits:
1. If the rpcbind request is going over TCP, and the server doesn't
support rpcbind versions 3 or 4, the client reduces by two the number
of ephemeral ports left in TIME_WAIT for each rpcbind request. This
will help during NFS mount storms.
2. The rpcbind interaction with servers that don't support rpcbind
versions 3 or 4 will use less network traffic. Also helpful
during mount storms.
3. We can eliminate the kernel build option that controls whether the
kernel's rpcbind client uses rpcbind version 3 and 4 for AF_INET
servers. Less complicated kernel configuration...
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/Kconfig')
| -rw-r--r-- | fs/Kconfig | 21 |
1 files changed, 0 insertions, 21 deletions
diff --git a/fs/Kconfig b/fs/Kconfig index 1c16de9611e..0ce72dcd6b9 100644 --- a/fs/Kconfig +++ b/fs/Kconfig @@ -1799,27 +1799,6 @@ config SUNRPC_XPRT_RDMA If unsure, say N. -config SUNRPC_BIND34 - bool "Support for rpcbind versions 3 & 4 (EXPERIMENTAL)" - depends on SUNRPC && EXPERIMENTAL - default n - help - RPC requests over IPv6 networks require support for larger - addresses when performing an RPC bind. Sun added support for - IPv6 addressing by creating two new versions of the rpcbind - protocol (RFC 1833). - - This option enables support in the kernel RPC client for - querying rpcbind servers via versions 3 and 4 of the rpcbind - protocol. The kernel automatically falls back to version 2 - if a remote rpcbind service does not support versions 3 or 4. - By themselves, these new versions do not provide support for - RPC over IPv6, but the new protocol versions are necessary to - support it. - - If unsure, say N to get traditional behavior (version 2 rpcbind - requests only). - config RPCSEC_GSS_KRB5 tristate "Secure RPC: Kerberos V mechanism (EXPERIMENTAL)" depends on SUNRPC && EXPERIMENTAL |