LU-13802 llite: add fail loc to force bio-dio switch

[fs/lustre-release.git] / lustre / tests / sanity.sh

diff --git a/lustre/tests/sanity.sh b/lustre/tests/sanity.sh
index c035a66..ae3b3c4 100755 (executable)
--- a/lustre/tests/sanity.sh
+++ b/lustre/tests/sanity.sh
@@ -14071,6 +14071,56 @@ test_119i()
 }
 run_test 119i "test unaligned aio at varying sizes"
 
+test_119j()
+{
+       (( $LINUX_VERSION_CODE > $(version_code 4.5.0) )) ||
+               skip "needs kernel > 4.5.0 for ki_flags support"
+
+       local rpcs
+       dd if=/dev/urandom of=$DIR/$tfile bs=8 count=1 || error "(0) dd failed"
+       sync
+       $LCTL set_param -n osc.*.rpc_stats=0
+       # Read from page cache, does not generate an rpc
+       dd if=$DIR/$tfile of=/dev/null bs=8 count=1 || error "(1) dd failed"
+       $LCTL get_param osc.*.rpc_stats
+       rpcs=($($LCTL get_param -n 'osc.*.rpc_stats' |
+               sed -n '/pages per rpc/,/^$/p' |
+               awk '/'$pages':/ { reads += $2; writes += $6 }; \
+               END { print reads,writes }'))
+       [[ ${rpcs[0]} == 0 ]] ||
+               error "(3) ${rpcs[0]} != 0 read RPCs"
+
+       # Test hybrid IO read
+       # Force next BIO as DIO
+       # This forces an RPC to the server
+       #define OBD_FAIL_LLITE_FORCE_BIO_AS_DIO 0x1429
+       $LCTL set_param fail_loc=0x1429
+       dd if=$DIR/$tfile of=/dev/null bs=8 count=1 || error "(4) dd failed"
+       $LCTL get_param osc.*.rpc_stats
+       rpcs=($($LCTL get_param -n 'osc.*.rpc_stats' |
+               sed -n '/pages per rpc/,/^$/p' |
+               awk '/'$pages':/ { reads += $2; writes += $6 }; \
+               END { print reads,writes }'))
+       [[ ${rpcs[0]} == 1 ]] ||
+               error "(5) ${rpcs[0]} != 1 read RPCs"
+
+       # Test hybrid IO write
+       #define OBD_FAIL_LLITE_FORCE_BIO_AS_DIO 0x1429
+       $LCTL set_param fail_loc=0x1429
+       #NB: We do not check for 0 write RPCs in the BIO case because that
+       # would make the test racey vs cache flushing
+       # but the DIO case is guaranteed to generate 1 write RPC
+       dd if=/dev/zero of=$DIR/$tfile bs=8 count=1 || error "(6) dd failed"
+       $LCTL get_param osc.*.rpc_stats
+       rpcs=($($LCTL get_param -n 'osc.*.rpc_stats' |
+               sed -n '/pages per rpc/,/^$/p' |
+               awk '/'$pages':/ { reads += $2; writes += $6 }; \
+               END { print reads,writes }'))
+       [[ ${rpcs[1]} == 1 ]] ||
+               error "(7) ${rpcs[0]} != 1 read RPCs"
+}
+run_test 119j "basic tests of hybrid IO switching"
+
 test_120a() {
        [ $PARALLEL == "yes" ] && skip "skip parallel run"
        remote_mds_nodsh && skip "remote MDS with nodsh"