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#!/usr/bin/env bash
testdir=$(readlink -f $(dirname $0))
rootdir=$(readlink -f $testdir/../../..)
source $rootdir/test/common/autotest_common.sh
source $rootdir/test/nvmf/common.sh
MALLOC_BDEV_SIZE=64
MALLOC_BLOCK_SIZE=512
rpc_py="$rootdir/scripts/rpc.py"
nvmftestinit
if check_ip_is_soft_roce $NVMF_FIRST_TARGET_IP; then
echo "Using software RDMA, Likely not enough memory to run this test. aborting."
exit 0
fi
nvmfappstart -m 0xF
# create the rdma transport with an intentionally small SRQ depth
$rpc_py nvmf_create_transport $NVMF_TRANSPORT_OPTS -u 8192 -s 1024
for i in $(seq 0 5); do
$rpc_py nvmf_create_subsystem nqn.2016-06.io.spdk:cnode$i -a -s SPDK00000000000001
$rpc_py bdev_malloc_create $MALLOC_BDEV_SIZE $MALLOC_BLOCK_SIZE -b Malloc$i
$rpc_py nvmf_subsystem_add_ns nqn.2016-06.io.spdk:cnode$i Malloc$i
$rpc_py nvmf_subsystem_add_listener nqn.2016-06.io.spdk:cnode$i -t $TEST_TRANSPORT -a $NVMF_FIRST_TARGET_IP -s $NVMF_PORT
nvme connect -t $TEST_TRANSPORT -n "nqn.2016-06.io.spdk:cnode${i}" -a "$NVMF_FIRST_TARGET_IP" -s "$NVMF_PORT" -i 16
waitforblk "nvme${i}n1"
done
# by running 6 different FIO jobs, each with 13 subjobs, we end up with 78 fio threads trying to write to
# our target at once. This completely overwhelms the target SRQ, but allows us to verify that rnr_retry is
# working even at very high queue depths because the rdma qpair doesn't fail.
# It is normal to see the initiator timeout and reconnect waiting for completions from an overwhelmmed target,
# but the connection should come up and FIO should complete without errors.
$rootdir/scripts/fio.py -p nvmf -i 1048576 -d 128 -t read -r 10 -n 13
sync
for i in $(seq 0 5); do
nvme disconnect -n "nqn.2016-06.io.spdk:cnode${i}"
$rpc_py nvmf_delete_subsystem nqn.2016-06.io.spdk:cnode$i
done
trap - SIGINT SIGTERM EXIT
nvmftestfini
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