Use OP_WRITE_STABLE in bs_fio

src/blockstore/blockstore.h

@@ -147,7 +147,7 @@ Output:
 struct blockstore_op_t
 {
     // operation
-    uint64_t opcode;
+    uint64_t opcode = 0;
     // finish callback
     std::function<void (blockstore_op_t*)> callback;
     union __attribute__((__packed__))
@@ -171,9 +171,9 @@ struct blockstore_op_t
             uint32_t list_stable_limit;
         };
     };
-    void *buf;
+    void *buf = NULL;
-    void *bitmap;
+    void *bitmap = NULL;
-    int retval;
+    int retval = 0;
 
     uint8_t private_data[BS_OP_PRIVATE_DATA_SIZE];
 };

src/blockstore/fio_engine.cpp

@@ -5,14 +5,14 @@
 //
 // Initialize storage for tests:
 //
-// dd if=/dev/zero of=test_data.bin bs=1024 count=1048576
+// dd if=/dev/zero of=test_data.bin bs=1M count=1024
-// dd if=/dev/zero of=test_meta.bin bs=1024 count=256
-// dd if=/dev/zero of=test_journal.bin bs=1024 count=4096
 //
 // Random write:
 //
-// fio -thread -ioengine=./libfio_blockstore.so -name=test -bs=4k -direct=1 -fsync=16 -iodepth=16 -rw=randwrite \
+// [LD_PRELOAD=libasan.so.8] \
-//     -bs_config='{"data_device":"./test_data.bin"}' -size=1000M
+// fio -name=test -thread -ioengine=../build/src/blockstore/libfio_vitastor_blk.so \
+//     -bs=4k -direct=1 -rw=randwrite -iodepth=16 -size=900M -loops=10 \
+//     -bs_config='{"data_device":"./test_data.bin","meta_offset":0,"journal_offset":16777216,"data_offset":33554432,"disable_data_fsync":true,"immediate_commit":"all","journal_no_same_sector_overwrites":true}'
 //
 // Linear write:
 //
@@ -189,7 +189,7 @@ static enum fio_q_status bs_queue(struct thread_data *td, struct io_u *io)
         };
         break;
     case DDIR_WRITE:
-        op->opcode = BS_OP_WRITE;
+        op->opcode = BS_OP_WRITE_STABLE;
         op->buf = io->xfer_buf;
         op->oid = {
             .inode = 1,