Whamcloud Community JIRA

[LU-6167] endless loop in lustre_rsync

Sun, 8 Feb 2015 04:54:23 +0000

When test lustre_rsync combined with racer, some strange behavior come out.
1. follw is the test case i use:

Test 13 - lustre_rsync, use racer test suite
test_13() {
init_src
init_changelog

local rrc=0
local rc=0
local clients=$CLIENTS
local RDIRS
local i

1. init racer directories
for d in ${RACERDIRS}; do
is_mounted $d || continue

RDIRS="$RDIRS $d/racer"
mkdir -p $d/racer

lfs setstripe $d/racer -c -1
if [ $MDSCOUNT -ge 2 ]; then
for i in $(seq $((MDSCOUNT - 1))); do
RDIRS="$RDIRS $d/racer$i"
if [ ! -e $d/racer$i ]; then
$LFS mkdir -i $i $d/racer$i ||
error "lfs mkdir $i failed"
fi
done
fi
done

2. racer start
local rpids=""
for rdir in $RDIRS; do
do_nodes $clients "DURATION=$DURATION MDSCOUNT=$MDSCOUNT \
$racer $rdir $NUM_RACER_THREADS" &
pid=$!
rpids="$rpids $pid"
done
for pid in $rpids; do
wait $pid
rc=$?
echo "pid=$pid rc=$rc"
if [ $rc != 0 ]; then
rrc=$((rrc + 1))
fi
done
8. Replicate the changes to $TGT and TGT2
$LRSYNC -s $DIR -t $TGT -t $TGT2 -m $MDT0 -u $CL_USER -l $LREPL_LOG \
-D $LRSYNC_LOG $EXTRA_FLAGS

9. check difference
check_diff $DIR $TGT
check_diff $DIR $TGT2
echo "check difference on target dir"
sleep 120
fini_changelog
cleanup_src_tgt
return 0
}
run_test 13 "lustre_rsync, use racer test suite"
It will cause lustre_rsync run in a endless loop, and never come out.