diff --git a/wally/suits/io/fio.py b/wally/suits/io/fio.py
index 1b5f38e..e055d98 100644
--- a/wally/suits/io/fio.py
+++ b/wally/suits/io/fio.py
@@ -1,14 +1,14 @@
 import os.path
 import logging
-from typing import Dict, List, Union, cast
+from typing import cast
 
 import wally
 
-from ...utils import ssize2b, StopTestError, get_os
+from ...utils import StopTestError, get_os, ssize2b
 from ...node_interfaces import IRPCNode
 from ..itest import ThreadedTest, IterationConfig, RunTestRes
-from .fio_task_parser import execution_time, fio_cfg_compile, FioJobSection, FioParams
-
+from .fio_task_parser import execution_time, fio_cfg_compile, FioJobSection, FioParams, get_log_files
+from . import rpc_plugin
 
 logger = logging.getLogger("wally")
 
@@ -23,82 +23,97 @@
 
         get = self.config.params.get
 
+        self.remote_task_file = self.join_remote("task.fio")
+        self.remote_output_file = self.join_remote("fio_result.json")
+        self.use_system_fio = get('use_system_fio', False)  # type: bool
+        self.use_sudo = get("use_sudo", True)  # type: bool
+        self.force_prefill = get('force_prefill', False)  # type: bool
+
         self.load_profile_name = self.config.params['load']  # type: str
         self.name = "io." + self.load_profile_name
 
         if os.path.isfile(self.load_profile_name):
-            self.load_profile_path = os.path.join(self.configs_dir, self.load_profile_name+ '.cfg')  # type: str
+            self.load_profile_path = self.load_profile_name   # type: str
         else:
-            self.load_profile_path = self.load_profile_name
+            self.load_profile_path = os.path.join(self.configs_dir, self.load_profile_name+ '.cfg')
 
         self.load_profile = open(self.load_profile_path, 'rt').read()  # type: str
 
-        self.use_system_fio = get('use_system_fio', False)  # type: bool
-
         if self.use_system_fio:
             self.fio_path = "fio"    # type: str
         else:
             self.fio_path = os.path.join(self.config.remote_dir, "fio")
 
-        self.force_prefill = get('force_prefill', False)  # type: bool
+        self.load_params = self.config.params['params']
+        self.file_name = self.load_params['FILENAME']
 
-        if 'FILESIZE' not in self.config.params:
-            raise NotImplementedError("File size detection is not implemented")
+        if 'FILESIZE' not in self.load_params:
+            logger.debug("Getting test file sizes on all nodes")
+            try:
+                sizes = {node.conn.fs.file_stat(self.file_name)['size']
+                         for node in self.config.nodes}
+            except Exception:
+                logger.exception("FILESIZE is not set in config file and fail to detect it." +
+                                 "Set FILESIZE or fix error and rerun test")
+                raise StopTestError()
 
-        # self.max_latency = get("max_lat")  # type: Optional[int]
-        # self.min_bw_per_thread = get("min_bw")   # type: Optional[int]
+            if len(sizes) != 1:
+                logger.error("IO target file %r has different sizes on test nodes - %r",
+                             self.file_name, sizes)
+                raise StopTestError()
 
-        self.use_sudo = get("use_sudo", True)  # type: bool
+            self.file_size = list(sizes)[0]
+            logger.info("Detected test file size is %s", self.file_size)
+            self.load_params['FILESIZE'] = self.file_size
+        else:
+            self.file_size = ssize2b(self.load_params['FILESIZE'])
 
-        self.fio_configs = list(fio_cfg_compile(self.load_profile,
-                                                self.load_profile_path,
-                                                cast(FioParams, self.config.params)))
+        self.fio_configs = list(fio_cfg_compile(self.load_profile, self.load_profile_path,
+                                                cast(FioParams, self.load_params)))
 
         if len(self.fio_configs) == 0:
-            logger.exception("Empty fio config provided")
-            raise StopTestError("Empty fio config provided")
+            logger.error("Empty fio config provided")
+            raise StopTestError()
 
         self.iterations_configs = self.fio_configs  # type: ignore
-        self.files_sizes = self.get_file_sizes()
-
         self.exec_folder = self.config.remote_dir
-        self.fio_path = "" if self.use_system_fio else self.exec_folder
-
-    def get_file_sizes(self) -> Dict[str, int]:
-        files_sizes = {}  # type: Dict[str, int]
-
-        for section in self.fio_configs:
-            sz = ssize2b(section.vals['size'])
-            msz = sz // (1024 ** 2) + (1 if sz % (1024 ** 2) != 0 else 0)
-            fname = section.vals['filename']  # type: str
-
-            # if already has other test with the same file name
-            # take largest size
-            files_sizes[fname] = max(files_sizes.get(fname, 0), msz)
-
-        return files_sizes
 
     def config_node(self, node: IRPCNode) -> None:
+        plugin_code = open(rpc_plugin.__file__.rsplit(".", 1)[0] + ".py", "rb").read()
+        node.upload_plugin(code=plugin_code, name="fio")
+
         try:
-            node.conn.rmdir(self.config.remote_dir, recursive=True, ignore_missing=True)
-            node.conn.mkdir(self.config.remote_dir)
-        except Exception as exc:
-            msg = "Failed to create folder {} on remote {}.".format(self.config.remote_dir, node)
+            node.conn.fs.rmtree(self.config.remote_dir)
+        except Exception:
+            pass
+
+        try:
+            node.conn.fs.makedirs(self.config.remote_dir)
+        except Exception:
+            msg = "Failed to recreate folder {} on remote {}.".format(self.config.remote_dir, node)
             logger.exception(msg)
-            raise StopTestError(msg) from exc
+            raise StopTestError()
 
         self.install_utils(node)
-        logger.info("Prefilling test files with random data")
-        fill_bw = node.conn.prefill_test_files(self.files_sizes, force=self.force_prefill, fio_path=self.fio_path)
+
+        mb = int(self.file_size / 1024 ** 2)
+        logger.info("Filling test file %s with %sMiB of random data", self.file_name, mb)
+        fill_bw = node.conn.fio.fill_file(self.file_name, mb, force=self.force_prefill, fio_path=self.fio_path)
         if fill_bw is not None:
-            logger.info("Initial fio fill bw is {} MiBps for {}".format(fill_bw, node.info.node_id()))
+            logger.info("Initial fio fill bw is {} MiBps for {}".format(fill_bw, node))
+
+        fio_config = "\n".join(map(str, self.iterations_configs))
+        node.put_to_file(self.remote_task_file, fio_config.encode("utf8"))
 
     def install_utils(self, node: IRPCNode) -> None:
+        os_info = get_os(node)
         if self.use_system_fio:
-            node.conn.install('fio', binary='fio')
-
-        if not self.use_system_fio:
-            os_info = get_os(node)
+            if os_info.distro != 'ubuntu':
+                logger.error("Only ubuntu supported on test VM")
+                raise StopTestError()
+            node.conn.fio.install('fio', binary='fio')
+        else:
+            node.conn.fio.install('bzip2', binary='bzip2')
             fio_dir = os.path.dirname(os.path.dirname(wally.__file__))  # type: str
             fio_dir = os.path.join(os.getcwd(), fio_dir)
             fio_dir = os.path.join(fio_dir, 'fio_binaries')
@@ -106,23 +121,32 @@
             fio_path = os.path.join(fio_dir, fname)  # type: str
 
             if not os.path.exists(fio_path):
-                raise RuntimeError("No prebuild fio binary available for {0}".format(os_info))
+                logger.error("No prebuild fio binary available for {0}".format(os_info))
+                raise StopTestError()
 
             bz_dest = self.join_remote('fio.bz2')  # type: str
             node.copy_file(fio_path, bz_dest)
-            node.run("bzip2 --decompress {}" + bz_dest)
-            node.run("chmod a+x " + self.join_remote("fio"))
+            node.run("bzip2 --decompress {} ; chmod a+x {}".format(bz_dest, self.join_remote("fio")))
 
     def get_expected_runtime(self, iteration_info: IterationConfig) -> int:
         return execution_time(cast(FioJobSection, iteration_info))
 
     def do_test(self, node: IRPCNode, iter_config: IterationConfig) -> RunTestRes:
         exec_time = execution_time(cast(FioJobSection, iter_config))
-        raw_res = node.conn.fio.run_fio(self.fio_path,
-                                        self.exec_folder,
-                                        str(cast(FioJobSection, iter_config)),
-                                        exec_time + max(300, exec_time))
+        fio_cmd_templ = "cd {exec_folder}; " + \
+                        "{fio_path} --output-format=json --output={out_file} --alloc-size=262144 {job_file}"
+
+        bw_log, iops_log, lat_hist_log = get_log_files(iter_config)
+
+        cmd = fio_cmd_templ.format(exec_folder=self.exec_folder,
+                                   fio_path=self.fio_path,
+                                   out_file=self.remote_output_file,
+                                   job_file=self.remote_task_file)
+        raw_res = node.run(cmd, timeout=exec_time + max(300, exec_time))
+        
+        return
+
         # TODO(koder): fix next error
-        raise NotImplementedError("Need to extract time from test result")
-        return raw_res, (0, 0)
+        # raise NotImplementedError("Need to extract time from test result")
+        # return raw_res, (0, 0)