issue-2831: dump iolog for fio_index mount_kikimr tests

build/ext_mapping.conf.json

@@ -5,7 +5,7 @@
         "5074323334": "https://storage.eu-north1.nebius.cloud/nbs-oss-resources/rootfs-compressed.img",
         "4399070549": "https://storage.eu-north1.nebius.cloud/nbs-oss-resources/blockstore-plugin-stable-23-1.tar.gz",
         "3240550068": "https://storage.eu-north1.nebius.cloud/nbs-oss-resources/blockstore-plugin-stable-22-2.tar.gz",
-        "2326530962": "https://storage.eu-north1.nebius.cloud/nbs-oss-resources/fio-static.tgz",
+        "2326530962": "https://storage.eu-north1.nebius.cloud/nbs-oss-resources/fio-3.38-static.tgz",
         "4449551218": "https://storage.eu-north1.nebius.cloud/nbs-oss-resources/qemu-static.tgz",
         "3307630510": "https://storage.eu-north1.nebius.cloud/nbs-oss-resources/rootfs.img",
         "4556399018": "https://storage.eu-north1.nebius.cloud/nbs-oss-resources/virtiofs-server",

cloud/filestore/tests/fio_index/mount-kikimr-test/test.py

@@ -13,4 +13,5 @@ def test_fio(name):
     mount_dir = get_filestore_mount_path()
     dir_name = fio.get_dir_name(mount_dir, name)
 
-    fio.run_index_test(dir_name, TESTS[name], fail_on_errors=True)
+    # TODO(#2831): remove this debug information
+    fio.run_index_test(dir_name, TESTS[name], fail_on_errors=True, verbose=True)

cloud/storage/core/tools/testing/fio/lib/__init__.py

@@ -175,12 +175,19 @@ def get_fio_cmd(self, fio_bin, file_name):
         cmd += ["--filename", file_name]
         return cmd
 
-    def get_index_fio_cmd(self, fio_bin, directory):
+    def get_index_fio_cmd(self, fio_bin, directory, verbose=False):
         cmd = self.get_common_fio_cmd(fio_bin)
         cmd += [
             "--directory", directory,
             "--numjobs", str(self.numjobs)
         ]
+        if verbose:
+            cmd += [
+                "--write_iolog",
+                os.path.join(common.output_path(), f"{self.name}.iolog"),
+                "--log_issue_time",
+                "1",
+            ]
         if self.fsync > 0:
             cmd += ["--fsync", str(self.fsync)]
         if self.fdatasync > 0:
@@ -311,14 +318,14 @@ def run_test(file_name, test, fail_on_errors=False):
     return _execute_command(cmd, fail_on_errors)
 
 
-def run_index_test(directory, test, fail_on_errors=False):
+def run_index_test(directory, test, fail_on_errors=False, verbose=False):
     # fio lays out the test file using the job blocksize, which may exhaust the
     # run time limit, so do it ourselves
     logger.info("laying out files in directory " + directory)
     _lay_out_files(directory, test.name, test.numjobs, test.size)
     logger.info("laid out")
 
     fio_bin = _get_fio_bin()
-    cmd = test.get_index_fio_cmd(fio_bin, directory)
+    cmd = test.get_index_fio_cmd(fio_bin, directory, verbose)
 
     return _execute_command(cmd, fail_on_errors)