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Diffstat (limited to 'tests/nvme_test.py')
| -rw-r--r-- | tests/nvme_test.py | 479 |
1 files changed, 479 insertions, 0 deletions
diff --git a/tests/nvme_test.py b/tests/nvme_test.py new file mode 100644 index 0000000..b49c12f --- /dev/null +++ b/tests/nvme_test.py @@ -0,0 +1,479 @@ +# Copyright (c) 2015-2016 Western Digital Corporation or its affiliates. +# +# This program is free software; you can redistribute it and/or +# modify it under the terms of the GNU General Public License +# as published by the Free Software Foundation; either version 2 +# of the License, or (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, +# MA 02110-1301, USA. +# +# Author: Chaitanya Kulkarni <chaitanya.kulkarni@hgst.com> +# +""" Base class for all the testcases +""" + +import re +import os +import sys +import json +import mmap +import stat +import time +import shutil +import subprocess +from nose import tools +from nose.tools import assert_equal +from nvme_test_logger import TestNVMeLogger + + +class TestNVMe(object): + + """ + Represents a testcase, each testcase shuold inherit this + class or appropriate subclass which is a child of this class. + + Common utility functions used in various testcases. + + - Attributes: + - ctrl : NVMe Controller. + - ns1 : default namespace. + - default_nsid : default namespace id. + - config_file : configuration file. + - clear_log_dir : default log directory. + """ + + def __init__(self): + """ Pre Section for TestNVMe. """ + # common code used in various testcases. + self.ctrl = "XXX" + self.ns1 = "XXX" + self.test_log_dir = "XXX" + self.default_nsid = 0x1 + self.config_file = 'config.json' + + self.load_config() + self.validate_pci_device() + + def __del__(self): + """ Post Section for TestNVMe. """ + if self.clear_log_dir is True: + shutil.rmtree(self.log_dir, ignore_errors=True) + + @tools.nottest + def validate_pci_device(self): + """ Validate underlaying device belogs to pci subsystem. + - Args: + - None + - Returns: + - None + """ + x1, x2, dev = self.ctrl.split('/') + cmd = cmd = "find /sys/devices -name \\*" + dev + " | grep -i pci" + err = subprocess.call(cmd, shell=True) + assert_equal(err, 0, "ERROR : Only NVMe PCI subsystem is supported") + + @tools.nottest + def load_config(self): + """ Load Basic test configuration. + - Args: + - None + - Returns: + - None + """ + with open(self.config_file) as data_file: + config = json.load(data_file) + self.ctrl = config['controller'] + self.ns1 = config['ns1'] + self.log_dir = config['log_dir'] + self.clear_log_dir = False + + if self.clear_log_dir is True: + shutil.rmtree(self.log_dir, ignore_errors=True) + + if not os.path.exists(self.log_dir): + os.makedirs(self.log_dir) + + @tools.nottest + def setup_log_dir(self, test_name): + """ Set up the log directory for a testcase + Args: + - test_name : name of the testcase. + Returns: + - None + """ + self.test_log_dir = self.log_dir + "/" + test_name + if not os.path.exists(self.test_log_dir): + os.makedirs(self.test_log_dir) + sys.stdout = TestNVMeLogger(self.test_log_dir + "/" + "stdout.log") + sys.stderr = TestNVMeLogger(self.test_log_dir + "/" + "stderr.log") + + @tools.nottest + def exec_cmd(self, cmd): + """ Wrapper for executing a shell command and return the result. """ + proc = subprocess.Popen(cmd, shell=True, stdout=subprocess.PIPE, + encoding='utf-8') + return proc.wait() + + @tools.nottest + def nvme_reset_ctrl(self): + """ Wrapper for nvme reset command. + - Args: + - None: + - Returns: + - None + """ + nvme_reset_cmd = "nvme reset " + self.ctrl + err = subprocess.call(nvme_reset_cmd, + shell=True, + stdout=subprocess.PIPE, + encoding='utf-8') + assert_equal(err, 0, "ERROR : nvme reset failed") + time.sleep(5) + rescan_cmd = "echo 1 > /sys/bus/pci/rescan" + proc = subprocess.Popen(rescan_cmd, + shell=True, + stdout=subprocess.PIPE, + stderr=subprocess.PIPE, + encoding='utf-8') + time.sleep(5) + assert_equal(proc.wait(), 0, "ERROR : pci rescan failed") + + @tools.nottest + def get_ctrl_id(self): + """ Wrapper for extracting the controller id. + - Args: + - None + - Returns: + - controller id. + """ + get_ctrl_id = "nvme list-ctrl " + self.ctrl + proc = subprocess.Popen(get_ctrl_id, + shell=True, + stdout=subprocess.PIPE, + encoding='utf-8') + err = proc.wait() + assert_equal(err, 0, "ERROR : nvme list-ctrl failed") + line = proc.stdout.readline() + ctrl_id = line.split(":")[1].strip() + return ctrl_id + + @tools.nottest + def get_ns_list(self): + """ Wrapper for extrating the namespace list. + - Args: + - None + - Returns: + - List of the namespaces. + """ + ns_list = [] + ns_list_cmd = "nvme list-ns " + self.ctrl + proc = subprocess.Popen(ns_list_cmd, + shell=True, + stdout=subprocess.PIPE, + encoding='utf-8') + assert_equal(proc.wait(), 0, "ERROR : nvme list namespace failed") + for line in proc.stdout: + ns_list.append(line.split('x')[-1]) + + return ns_list + + @tools.nottest + def get_max_ns(self): + """ Wrapper for extracting maximum number of namspaces supported. + - Args: + - None + - Returns: + - maximum number of namespaces supported. + """ + pattern = re.compile("^nn[ ]+: [0-9]", re.IGNORECASE) + max_ns = -1 + max_ns_cmd = "nvme id-ctrl " + self.ctrl + proc = subprocess.Popen(max_ns_cmd, + shell=True, + stdout=subprocess.PIPE, + encoding='utf-8') + err = proc.wait() + assert_equal(err, 0, "ERROR : reading maximum namespace count failed") + + for line in proc.stdout: + if pattern.match(line): + max_ns = line.split(":")[1].strip() + break + print(max_ns) + return int(max_ns) + + @tools.nottest + def get_ncap(self): + """ Wrapper for extracting capacity. + - Args: + - None + - Returns: + - maximum number of namespaces supported. + """ + pattern = re.compile("^tnvmcap[ ]+: [0-9]", re.IGNORECASE) + ncap = -1 + ncap_cmd = "nvme id-ctrl " + self.ctrl + proc = subprocess.Popen(ncap_cmd, + shell=True, + stdout=subprocess.PIPE, + encoding='utf-8') + err = proc.wait() + assert_equal(err, 0, "ERROR : reading nvm capacity failed") + + for line in proc.stdout: + if pattern.match(line): + ncap = line.split(":")[1].strip() + break + print(ncap) + return int(ncap) + + @tools.nottest + def get_format(self): + """ Wrapper for extracting format. + - Args: + - None + - Returns: + - maximum format of namespace. + """ + # defaulting to 4K + nvm_format = 4096 + nvm_format_cmd = "nvme id-ns " + self.ctrl + " -n1" + proc = subprocess.Popen(nvm_format_cmd, + shell=True, + stdout=subprocess.PIPE, + encoding='utf-8') + err = proc.wait() + assert_equal(err, 0, "ERROR : reading nvm capacity failed") + + for line in proc.stdout: + if "in use" in line: + nvm_format = 2 ** int(line.split(":")[3].split()[0]) + print(nvm_format) + return int(nvm_format) + + @tools.nottest + def delete_all_ns(self): + """ Wrapper for deleting all the namespaces. + - Args: + - None + - Returns: + - None + """ + delete_ns_cmd = "nvme delete-ns " + self.ctrl + " -n 0xFFFFFFFF" + assert_equal(self.exec_cmd(delete_ns_cmd), 0) + list_ns_cmd = "nvme list-ns " + self.ctrl + " --all | wc -l" + proc = subprocess.Popen(list_ns_cmd, + shell=True, + stdout=subprocess.PIPE, + encoding='utf-8') + output = proc.stdout.read().strip() + assert_equal(output, '0', "ERROR : deleting all namespace failed") + + @tools.nottest + def create_ns(self, nsze, ncap, flbas, dps): + """ Wrapper for creating a namespace. + - Args: + - nsze : new namespace size. + - ncap : new namespace capacity. + - flbas : new namespace format. + - dps : new namespace data protection information. + - Returns: + - return code of the nvme create namespace command. + """ + create_ns_cmd = "nvme create-ns " + self.ctrl + " --nsze=" + \ + str(nsze) + " --ncap=" + str(ncap) + \ + " --flbas=" + str(flbas) + " --dps=" + str(dps) + return self.exec_cmd(create_ns_cmd) + + @tools.nottest + def create_and_validate_ns(self, nsid, nsze, ncap, flbas, dps): + """ Wrapper for creating and validating a namespace. + - Args: + - nsid : new namespace id. + - nsze : new namespace size. + - ncap : new namespace capacity. + - flbas : new namespace format. + - dps : new namespace data protection information. + - Returns: + - return 0 on success, error code on failure. + """ + err = self.create_ns(nsze, ncap, flbas, dps) + if err == 0: + time.sleep(2) + id_ns_cmd = "nvme id-ns " + self.ctrl + " -n " + str(nsid) + err = subprocess.call(id_ns_cmd, + shell=True, + stdout=subprocess.PIPE, + encoding='utf-8') + return err + + @tools.nottest + def attach_ns(self, ctrl_id, ns_id): + """ Wrapper for attaching the namespace. + - Args: + - ctrl_id : controller id to which namespace to be attached. + - nsid : new namespace id. + - Returns: + - 0 on success, error code on failure. + """ + attach_ns_cmd = "nvme attach-ns " + self.ctrl + \ + " --namespace-id=" + str(ns_id) + \ + " --controllers=" + ctrl_id + err = subprocess.call(attach_ns_cmd, + shell=True, + stdout=subprocess.PIPE, + encoding='utf-8') + time.sleep(5) + if err == 0: + # enumerate new namespace block device + self.nvme_reset_ctrl() + time.sleep(5) + # check if new namespace block device exists + err = 0 if stat.S_ISBLK(os.stat(self.ns1).st_mode) else 1 + return err + + @tools.nottest + def detach_ns(self, ctrl_id, nsid): + """ Wrapper for detaching the namespace. + - Args: + - ctrl_id : controller id to which namespace to be attached. + - nsid : new namespace id. + - Returns: + - 0 on success, error code on failure. + """ + detach_ns_cmd = "nvme detach-ns " + self.ctrl + \ + " --namespace-id=" + str(nsid) + \ + " --controllers=" + ctrl_id + return subprocess.call(detach_ns_cmd, + shell=True, + stdout=subprocess.PIPE, + encoding='utf-8') + + @tools.nottest + def delete_and_validate_ns(self, nsid): + """ Wrapper for deleting and validating that namespace is deleted. + - Args: + - nsid : new namespace id. + - Returns: + - 0 on success, 1 on failure. + """ + # delete the namespace + delete_ns_cmd = "nvme delete-ns " + self.ctrl + " -n " + str(nsid) + err = subprocess.call(delete_ns_cmd, + shell=True, + stdout=subprocess.PIPE, + encoding='utf-8') + assert_equal(err, 0, "ERROR : delete namespace failed") + return err + + def get_smart_log(self, nsid): + """ Wrapper for nvme smart-log command. + - Args: + - nsid : namespace id to get smart log from. + - Returns: + - 0 on success, error code on failure. + """ + smart_log_cmd = "nvme smart-log " + self.ctrl + " -n " + str(nsid) + print(smart_log_cmd) + proc = subprocess.Popen(smart_log_cmd, + shell=True, + stdout=subprocess.PIPE, + encoding='utf-8') + err = proc.wait() + assert_equal(err, 0, "ERROR : nvme smart log failed") + + for line in proc.stdout: + if "data_units_read" in line: + data_units_read = \ + line.replace(",", "", 1) + if "data_units_written" in line: + data_units_written = \ + line.replace(",", "", 1) + if "host_read_commands" in line: + host_read_commands = \ + line.replace(",", "", 1) + if "host_write_commands" in line: + host_write_commands = \ + line.replace(",", "", 1) + + print("data_units_read " + data_units_read) + print("data_units_written " + data_units_written) + print("host_read_commands " + host_read_commands) + print("host_write_commands " + host_write_commands) + return err + + def get_id_ctrl(self, vendor=False): + """ Wrapper for nvme id-ctrl command. + - Args: + - None + - Returns: + - 0 on success, error code on failure. + """ + if not vendor: + id_ctrl_cmd = "nvme id-ctrl " + self.ctrl + else: + id_ctrl_cmd = "nvme id-ctrl -v " + self.ctrl + print(id_ctrl_cmd) + proc = subprocess.Popen(id_ctrl_cmd, + shell=True, + stdout=subprocess.PIPE, + encoding='utf-8') + err = proc.wait() + assert_equal(err, 0, "ERROR : nvme id controller failed") + return err + + def get_error_log(self): + """ Wrapper for nvme error-log command. + - Args: + - None + - Returns: + - 0 on success, error code on failure. + """ + pattern = re.compile("^ Entry\[[ ]*[0-9]+\]") + error_log_cmd = "nvme error-log " + self.ctrl + proc = subprocess.Popen(error_log_cmd, + shell=True, + stdout=subprocess.PIPE, + encoding='utf-8') + err = proc.wait() + assert_equal(err, 0, "ERROR : nvme error log failed") + line = proc.stdout.readline() + err_log_entry_count = int(line.split(" ")[5].strip().split(":")[1]) + entry_count = 0 + for line in proc.stdout: + if pattern.match(line): + entry_count += 1 + + return 0 if err_log_entry_count == entry_count else 1 + + def run_ns_io(self, nsid, lbads): + """ Wrapper to run ios on namespace under test. + - Args: + - lbads : LBA Data size supported in power of 2 format. + - Returns: + - None + """ + block_size = mmap.PAGESIZE if int(lbads) < 9 else 2 ** int(lbads) + ns_path = self.ctrl + "n" + str(nsid) + io_cmd = "dd if=" + ns_path + " of=/dev/null" + " bs=" + \ + str(block_size) + " count=10 > /dev/null 2>&1" + print(io_cmd) + run_io = subprocess.Popen(io_cmd, shell=True, stdout=subprocess.PIPE, + encoding='utf-8') + run_io_result = run_io.communicate()[1] + assert_equal(run_io_result, None) + io_cmd = "dd if=/dev/zero of=" + ns_path + " bs=" + \ + str(block_size) + " count=10 > /dev/null 2>&1" + print(io_cmd) + run_io = subprocess.Popen(io_cmd, shell=True, stdout=subprocess.PIPE, + encoding='utf-8') + run_io_result = run_io.communicate()[1] + assert_equal(run_io_result, None) |