+#b_cray 53 "|X| open request and close reply while two MDC requests in flight"
+#b_cray 54 "|X| open request and close reply while two MDC requests in flight"
+
+#b3761 ASSERTION(hash != 0) failed
+test_55() {
+# OBD_FAIL_MDS_OPEN_CREATE | OBD_FAIL_ONCE
+ do_facet $SINGLEMDS "sysctl -w lustre.fail_loc=0x8000012b"
+ touch $DIR/$tfile &
+ # give touch a chance to run
+ sleep 5
+ do_facet $SINGLEMDS "sysctl -w lustre.fail_loc=0x0"
+ rm $DIR/$tfile
+ return 0
+}
+run_test 55 "let MDS_CHECK_RESENT return the original return code instead of 0"
+
+#b3440 ASSERTION(rec->ur_fid2->id) failed
+test_56() {
+ ln -s foo $DIR/$tfile
+ replay_barrier $SINGLEMDS
+ #drop_reply "cat $DIR/$tfile"
+ fail $SINGLEMDS
+ sleep 10
+}
+run_test 56 "don't replay a symlink open request (3440)"
+
+#recovery one mds-ost setattr from llog
+test_57() {
+#define OBD_FAIL_MDS_OST_SETATTR 0x12c
+ do_facet $SINGLEMDS "sysctl -w lustre.fail_loc=0x8000012c"
+ touch $DIR/$tfile
+ replay_barrier $SINGLEMDS
+ fail $SINGLEMDS
+ sleep 1
+ $CHECKSTAT -t file $DIR/$tfile || return 1
+ do_facet $SINGLEMDS "sysctl -w lustre.fail_loc=0x0"
+ rm $DIR/$tfile
+}
+run_test 57 "test recovery from llog for setattr op"
+
+#recovery many mds-ost setattr from llog
+test_58() {
+#define OBD_FAIL_MDS_OST_SETATTR 0x12c
+ do_facet $SINGLEMDS "sysctl -w lustre.fail_loc=0x8000012c"
+ mkdir $DIR/$tdir
+ createmany -o $DIR/$tdir/$tfile-%d 2500
+ replay_barrier $SINGLEMDS
+ fail $SINGLEMDS
+ sleep 2
+ $CHECKSTAT -t file $DIR/$tdir/$tfile-* || return 1
+ do_facet $SINGLEMDS "sysctl -w lustre.fail_loc=0x0"
+ unlinkmany $DIR/$tdir/$tfile-%d 2500
+ rmdir $DIR/$tdir
+}
+run_test 58 "test recovery from llog for setattr op (test llog_gen_rec)"
+
+# log_commit_thread vs filter_destroy race used to lead to import use after free
+# bug 11658
+test_59() {
+ mkdir $DIR/$tdir
+ createmany -o $DIR/$tdir/$tfile-%d 200
+ sync
+ unlinkmany $DIR/$tdir/$tfile-%d 200
+#define OBD_FAIL_PTLRPC_DELAY_RECOV 0x507
+ do_facet ost1 "sysctl -w lustre.fail_loc=0x507"
+ fail ost1
+ fail $SINGLEMDS
+ do_facet ost1 "sysctl -w lustre.fail_loc=0x0"
+ sleep 20
+ rmdir $DIR/$tdir
+}
+run_test 59 "test log_commit_thread vs filter_destroy race"
+
+# race between add unlink llog vs cat log init in post_recovery (only for b1_6)
+# bug 12086: should no oops and No ctxt error for this test
+test_60() {
+ mkdir $DIR/$tdir
+ createmany -o $DIR/$tdir/$tfile-%d 200
+ replay_barrier $SINGLEMDS
+ unlinkmany $DIR/$tdir/$tfile-%d 0 100
+ fail $SINGLEMDS
+ unlinkmany $DIR/$tdir/$tfile-%d 100 100
+ local no_ctxt=`dmesg | grep "No ctxt"`
+ [ -z "$no_ctxt" ] || error "ctxt is not initialized in recovery"
+}
+run_test 60 "test llog post recovery init vs llog unlink"