+test_31() {
+ mkdir -p $DIR1/$tdir || error "Creating dir $DIR1/$tdir"
+ writes=`LANG=C dd if=/dev/zero of=$DIR/$tdir/$tfile count=1 2>&1 |
+ awk 'BEGIN { FS="+" } /out/ {print $1}'`
+ #define OBD_FAIL_LDLM_CANCEL_BL_CB_RACE 0x314
+ sysctl -w lustre.fail_loc=0x314
+ reads=`LANG=C dd if=$DIR2/$tdir/$tfile of=/dev/null 2>&1 |
+ awk 'BEGIN { FS="+" } /in/ {print $1}'`
+ [ $reads -eq $writes ] || error "read" $reads "blocks, must be" $writes
+}
+run_test 31 "voluntary cancel / blocking ast race=============="
+
+# enable/disable lockless truncate feature, depending on the arg 0/1
+enable_lockless_truncate() {
+ lctl set_param -n llite.*.lockless_truncate $1
+}
+
+test_32a() { # bug 11270
+ local p="$TMP/sanityN-$TESTNAME.parameters"
+ save_lustre_params $HOSTNAME llite.*.lockless_truncate > $p
+ cancel_lru_locks osc
+ clear_llite_stats
+ enable_lockless_truncate 1
+ dd if=/dev/zero of=$DIR1/$tfile count=10 bs=1M > /dev/null 2>&1
+
+ log "checking cached lockless truncate"
+ $TRUNCATE $DIR1/$tfile 8000000
+ $CHECKSTAT -s 8000000 $DIR2/$tfile || error "wrong file size"
+ [ $(calc_llite_stats lockless_truncate) -eq 0 ] ||
+ error "lockless truncate doesn't use cached locks"
+
+ log "checking not cached lockless truncate"
+ $TRUNCATE $DIR2/$tfile 5000000
+ $CHECKSTAT -s 5000000 $DIR1/$tfile || error "wrong file size"
+ [ $(calc_llite_stats lockless_truncate) -ne 0 ] ||
+ error "not cached trancate isn't lockless"
+
+ log "disabled lockless truncate"
+ enable_lockless_truncate 0
+ clear_llite_stats
+ $TRUNCATE $DIR2/$tfile 3000000
+ $CHECKSTAT -s 3000000 $DIR1/$tfile || error "wrong file size"
+ [ $(calc_llite_stats lockless_truncate) -eq 0 ] ||
+ error "lockless truncate disabling failed"
+ rm $DIR1/$tfile
+ # restore lockless_truncate default values
+ restore_lustre_params < $p
+ rm -f $p
+}
+run_test 32a "lockless truncate"
+
+test_32b() { # bug 11270
+ local node
+ local p="$TMP/sanityN-$TESTNAME.parameters"
+ save_lustre_params $HOSTNAME "llite.*.contention_seconds" > $p
+ for node in $(osts_nodes); do
+ save_lustre_params $node "ldlm.namespaces.filter-*.max_nolock_bytes" >> $p
+ save_lustre_params $node "ldlm.namespaces.filter-*.contended_locks" >> $p
+ save_lustre_params $node "ldlm.namespaces.filter-*.contention_seconds" >> $p
+ done
+ clear_llite_stats
+ # agressive lockless i/o settings
+ for node in $(osts_nodes); do
+ do_node $node 'lctl set_param -n ldlm.namespaces.filter-*.max_nolock_bytes 2000000; lctl set_param -n ldlm.namespaces.filter-*.contended_locks 0; lctl set_param -n ldlm.namespaces.filter-*.contention_seconds 60'
+ done
+ lctl set_param -n llite.*.contention_seconds 60
+ for i in $(seq 5); do
+ dd if=/dev/zero of=$DIR1/$tfile bs=4k count=1 conv=notrunc > /dev/null 2>&1
+ dd if=/dev/zero of=$DIR2/$tfile bs=4k count=1 conv=notrunc > /dev/null 2>&1
+ done
+ [ $(calc_llite_stats lockless_write_bytes) -ne 0 ] || error "lockless i/o was not triggered"
+ # disable lockless i/o (it is disabled by default)
+ for node in $(osts_nodes); do
+ do_node $node 'lctl set_param -n ldlm.namespaces.filter-*.max_nolock_bytes 0; lctl set_param -n ldlm.namespaces.filter-*.contended_locks 32; lctl set_param -n ldlm.namespaces.filter-*.contention_seconds 0'
+ done
+ # set contention_seconds to 0 at client too, otherwise Lustre still
+ # remembers lock contention
+ lctl set_param -n llite.*.contention_seconds 0
+ clear_llite_stats
+ for i in $(seq 5); do
+ dd if=/dev/zero of=$DIR1/$tfile bs=4k count=1 conv=notrunc > /dev/null 2>&1
+ dd if=/dev/zero of=$DIR2/$tfile bs=4k count=1 conv=notrunc > /dev/null 2>&1
+ done
+ [ $(calc_llite_stats lockless_write_bytes) -eq 0 ] ||
+ error "lockless i/o works when disabled"
+ rm -f $DIR1/$tfile
+ restore_lustre_params <$p
+ rm -f $p
+}
+run_test 32b "lockless i/o"
+