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authorCody P Schafer <dev@codyps.com>2017-06-06 18:30:49 -0400
committerRichard Purdie <richard.purdie@linuxfoundation.org>2017-06-12 15:08:32 +0100
commit6bb9860ef7ba9c84fe9bd3a81aa6555f67ebd38e (patch)
tree6b76791c01f492ddabea5b5de7bacc07a39bcd13 /scripts/runqemu-export-rootfs
parent7acb3ae1cdbf1688a373c8047ab56ef96bbe8b88 (diff)
downloadpoky-6bb9860ef7ba9c84fe9bd3a81aa6555f67ebd38e.tar.gz
runqemu-export-rootfs: don't change RPC ports
RPC ports (also known as rpc program numbers) are values: - given to rpcbind (aka portmapper) to allow nfsv3 clients that don't know the tcp/udp port number of nfsd and mountd to look it up the tcp/udp port number, and to - allow a single transport (ie: tcp/udp port) to provide multiple sunrpc services. OE has carried patches to nfsutils & linux for some time to support the mountprog & nfsprog options. In the case of runqemu-export-rootfs, we don't need to use custom rpc program numbers because runqemu-export-rootfs tells unfsd not to register with the portmapper, and unfsd runs the nfs and mount rpc services on tcp/udp ports unfsd binds itself (iow: the tcp/udp ports are not shared in the sunrpc sense). Linux's nfs client does not query rpcbind when tcp/udp port numbers are specified (in net/sunrpc/clnt.c, call_bind checks for the tcp/udp port with xprt_bound() and skips the call to rpcbind if xprtsock.c's xs_setup_udp() or xs_setup_tcp() has found a non-zero tcp/udp port). The program numbers _are_ sent over the mount & nfs protocol (really, over sunrpc), and checked to match at both ends. As a result, even when rpcbind is unused, using different program numbers in unfsd vs linux nfs client causes mounts to fail (and nfsroot mounts to timeout). The result is that specifying custom program numbers in runqemu-export-rootfs doesn't solve any conflicts, it simply requires that users of runqemu-export-rootfs carry a kernel patch & adds 2 extra parameters to the kernel command line unnecessarily. Change runqemu-export-rootfs to use the default program numbers. For now, I have not dropped the custom program number patches to linux, nfs-utils, and unfsd just in case someone is using them in a non-runqemu-export-rootfs context. CC: Bruce Ashfield <bruce.ashfield@gmail.com> CC: Mark Hatle <mark.hatle@windriver.com> (From OE-Core rev: 9c91df324dfe58273f5a1d1d33dba1d34a180db7) Signed-off-by: Cody P Schafer <dev@codyps.com> Signed-off-by: Ross Burton <ross.burton@intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Diffstat (limited to 'scripts/runqemu-export-rootfs')
-rwxr-xr-xscripts/runqemu-export-rootfs8
1 files changed, 2 insertions, 6 deletions
diff --git a/scripts/runqemu-export-rootfs b/scripts/runqemu-export-rootfs
index c7992d8223..70cdcdbb13 100755
--- a/scripts/runqemu-export-rootfs
+++ b/scripts/runqemu-export-rootfs
@@ -77,10 +77,6 @@ if [ ! -d "$PSEUDO_LOCALSTATEDIR" ]; then
77 exit 1 77 exit 1
78fi 78fi
79 79
80# rpc.mountd RPC port
81MOUNTD_RPCPORT=${MOUNTD_RPCPORT:=$[ 21111 + $NFS_INSTANCE ]}
82# rpc.nfsd RPC port
83NFSD_RPCPORT=${NFSD_RPCPORT:=$[ 11111 + $NFS_INSTANCE ]}
84# NFS server port number 80# NFS server port number
85NFSD_PORT=${NFSD_PORT:=$[ 3049 + 2 * $NFS_INSTANCE ]} 81NFSD_PORT=${NFSD_PORT:=$[ 3049 + 2 * $NFS_INSTANCE ]}
86# mountd port number 82# mountd port number
@@ -88,7 +84,7 @@ MOUNTD_PORT=${MOUNTD_PORT:=$[ 3048 + 2 * $NFS_INSTANCE ]}
88 84
89## For debugging you would additionally add 85## For debugging you would additionally add
90## --debug all 86## --debug all
91UNFSD_OPTS="-p -N -i $NFSPID -e $EXPORTS -x $NFSD_RPCPORT -n $NFSD_PORT -y $MOUNTD_RPCPORT -m $MOUNTD_PORT" 87UNFSD_OPTS="-p -N -i $NFSPID -e $EXPORTS -n $NFSD_PORT -m $MOUNTD_PORT"
92 88
93# See how we were called. 89# See how we were called.
94case "$1" in 90case "$1" in
@@ -130,7 +126,7 @@ case "$1" in
130 fi 126 fi
131 echo " " 127 echo " "
132 echo "On your target please remember to add the following options for NFS" 128 echo "On your target please remember to add the following options for NFS"
133 echo "nfsroot=IP_ADDRESS:$NFS_EXPORT_DIR,nfsvers=3,port=$NFSD_PORT,mountprog=$MOUNTD_RPCPORT,nfsprog=$NFSD_RPCPORT,udp,mountport=$MOUNTD_PORT" 129 echo "nfsroot=IP_ADDRESS:$NFS_EXPORT_DIR,nfsvers=3,port=$NFSD_PORT,udp,mountport=$MOUNTD_PORT"
134 ;; 130 ;;
135 stop) 131 stop)
136 if [ -f "$NFSPID" ]; then 132 if [ -f "$NFSPID" ]; then