1 files changed, 52 insertions, 0 deletions
diff --git a/src/test/objectstore/run_test_deferred.sh b/src/test/objectstore/run_test_deferred.sh
new file mode 100755
index 000000000..1be4d9104
--- /dev/null
+++ b/src/test/objectstore/run_test_deferred.sh
@@ -0,0 +1,52 @@
+#!/bin/bash
+
+
+if [[ ! (-x ./bin/unittest_deferred) || ! (-x ./bin/ceph-kvstore-tool) || ! (-x ./bin/ceph-bluestore-tool)]]
+then
+    echo Test must be run from ceph build directory
+    echo with unittest_deferred, ceph-kvstore-tool and ceph-bluestore-tool compiled
+    exit 1
+fi
+
+# Create BlueStore, only main block device, 4K AU, forced deferred 4K, 64K AU for BlueFS
+
+# Create file zapchajdziura, that is 0xe000 in size.
+# This adds to 0x0000 - 0x1000 of BlueStore superblock and 0x1000 - 0x2000 of BlueFS superblock,
+# making 0x00000 - 0x10000 filled, nicely aligning for 64K BlueFS requirements
+
+# Prefill 10 objects Object-0 .. Object-9, each 64K. Sync to disk.
+# Do transactions like:
+# - fill Object-x+1 16 times at offsets 0x0000, 0x1000, ... 0xf000 with 8bytes, trigerring deferred writes
+# - fill Object-x with 64K data
+# Repeat for Object-0 to Object-8.
+
+# Right after getting notification on_complete for all 9 transactions, immediately exit(1).
+./bin/unittest_deferred --log-to-stderr=false
+
+# Now we should have a considerable amount of pending deferred writes.
+# They do refer disk regions that do not belong to any object.
+
+# Perform compaction on RocksDB
+# This initializes BlueFS, but does not replay deferred writes.
+# It jiggles RocksDB files around. CURRENT and MANIFEST are recreated, with some .sst files too.
+# The hope here is that newly created RocksDB files will occupy space that is free,
+# but targetted by pending deferred writes.
+./bin/ceph-kvstore-tool bluestore-kv bluestore.test_temp_dir/ compact --log-to-stderr=false
+
+# It this step we (hopefully) get RocksDB files overwritten
+# We initialize BlueFS and RocksDB, there should be no problem here.
+# Then we apply deferred writes. Now some of RocksDB files might get corrupted.
+# It is very likely that this will not cause any problems, since CURRENT and MANIFEST are only read at bootup.
+./bin/ceph-bluestore-tool --path bluestore.test_temp_dir/ --command fsck --deep 1 --debug-bluestore=30/30 --debug-bdev=30/30 --log-file=log-bs-corrupts.txt --log-to-file --log-to-stderr=false
+
+# If we were lucky, this command now fails
+./bin/ceph-bluestore-tool --path bluestore.test_temp_dir/ --command fsck --deep 1 --debug-bluestore=30/30 --debug-bdev=30/30 --log-file=log-bs-crash.txt --log-to-file --log-to-stderr=false
+if [[ $? != 0 ]]
+then
+    echo "Deferred writes corruption successfully created !"
+else
+    echo "No deferred write problems detected."
+fi
+
+#cleanup
+rm -rf bluestore.test_temp_dir/