Spdk/test/nvmf/host/fio.sh
Jim Harris 7b7799bf9c fio_plugin: switch to LD_PRELOAD instead of dynamically loading
fio has a race between reap_threads() and free_ioengine().  free_ioengine()
will call the ioengine's cleanup routine and then dlclose it if it
is dynamically linked (like the spdk fio plugin).  free_ioengine() does
not set td->io_ops = NULL though until after dlclose() is complete.  If
reap_threads() tries to dereference td->io_ops after our plugin has been
closed but before io_ops was set to NULL, it will segfault.

Solution (until an upstream fio fix is available) is to use LD_PRELOAD
instead.

Signed-off-by: Jim Harris <james.r.harris@intel.com>
Change-Id: Ide4eb3cb92a636513289107fc211fdf1f98b616f

Reviewed-on: https://review.gerrithub.io/365272
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Ziye Yang <optimistyzy@gmail.com>
2017-06-14 11:12:29 -04:00

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#!/usr/bin/env bash
testdir=$(readlink -f $(dirname $0))
rootdir=$(readlink -f $testdir/../../..)
source $rootdir/scripts/autotest_common.sh
source $rootdir/test/nvmf/common.sh
rpc_py="python $rootdir/scripts/rpc.py"
set -e
if ! rdma_nic_available; then
echo "no NIC for nvmf test"
exit 0
fi
if [ ! -d /usr/src/fio ]; then
echo "FIO not available"
exit 0
fi
timing_enter fio
timing_enter start_nvmf_tgt
$NVMF_APP -c $testdir/../nvmf.conf &
nvmfpid=$!
trap "killprocess $nvmfpid; exit 1" SIGINT SIGTERM EXIT
waitforlisten $nvmfpid ${RPC_PORT}
timing_exit start_nvmf_tgt
$rpc_py construct_nvmf_subsystem Direct nqn.2016-06.io.spdk:cnode1 'transport:RDMA traddr:192.168.100.8 trsvcid:4420' '' -p "*"
PLUGIN_DIR=$rootdir/examples/nvme/fio_plugin
LD_PRELOAD=$PLUGIN_DIR/fio_plugin /usr/src/fio/fio $PLUGIN_DIR/example_config.fio --filename="trtype=RDMA adrfam=IPv4 traddr=192.168.100.8 trsvcid=4420 ns=1"
sync
$rpc_py delete_nvmf_subsystem nqn.2016-06.io.spdk:cnode1
trap - SIGINT SIGTERM EXIT
killprocess $nvmfpid
timing_exit fio