98 lines
3.5 KiB
Python
98 lines
3.5 KiB
Python
# Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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import os
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import re
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from autotest_lib.client.bin import test, utils
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from autotest_lib.client.common_lib import error
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class hardware_SsdDetection(test.test):
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"""Verify that a flash device is present. """
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version = 1
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# Keep a list of boards that are expected to ship with hard drive.
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boards_with_hdd = ['butterfly', 'kiev', 'parrot', 'stout']
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def setup(self):
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"""
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create a empty srcdir to prevent the error that checks
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.version file
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"""
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if not os.path.exists(self.srcdir):
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utils.system('mkdir %s' % self.srcdir)
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def run_once(self, check_link_speed=()):
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"""
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Use rootdev to find the underlying block device even if the
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system booted to /dev/dm-0.
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"""
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device = utils.get_root_device()
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def is_fixed(dev):
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""" Check the device is fixed.
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@param dev: device to check, i.e. 'sda'.
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"""
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sysfs_path = '/sys/block/%s/removable' % dev
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return (os.path.exists(sysfs_path) and
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open(sysfs_path).read().strip() == '0')
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# Catch device name like sda, mmcblk0, nvme0n1.
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device_re = re.compile(r'^/dev/([a-zA-Z0-9]+)$')
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dev = device_re.findall(device)
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if len(dev) != 1 or not is_fixed(dev[0]):
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raise error.TestFail('The main disk %s is not fixed' % dev)
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# If it is an mmcblk or nvme device, then it is SSD.
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# Else run hdparm to check for SSD.
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if re.search("nvme", device):
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return
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if re.search("mmcblk", device):
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return
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type_path = '/sys/block/%s/device/type' % dev[0]
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type = os.path.realpath(type_path)
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if re.search("ufs", type):
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return
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hdparm = utils.run('/sbin/hdparm -I %s' % device)
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# Check if device is a SSD
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match = re.search(r'Nominal Media Rotation Rate: (.+)$',
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hdparm.stdout, re.MULTILINE)
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if match and match.group(1):
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if match.group(1) != 'Solid State Device':
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if utils.get_board() in self.boards_with_hdd:
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return
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raise error.TestFail('The main disk is not a SSD, '
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'Rotation Rate: %s' % match.group(1))
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else:
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raise error.TestFail(
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'Rotation Rate not reported from the device, '
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'unable to ensure it is a SSD')
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# Check if SSD is > 8GB in size
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match = re.search("device size with M = 1000\*1000: (.+) MBytes",
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hdparm.stdout, re.MULTILINE)
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if match and match.group(1):
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size = int(match.group(1))
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self.write_perf_keyval({"mb_ssd_device_size" : size})
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else:
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raise error.TestFail(
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'Device size info missing from the device')
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# Check supported link speed.
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#
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# check_link_speed is an empty tuple by default, which does not perform
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# link speed checking. You can run the test while specifying
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# check_link_speed=('1.5Gb/s', '3.0Gb/s') to check the 2 signaling
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# speeds are both supported.
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for link_speed in check_link_speed:
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if not re.search(r'Gen. signaling speed \(%s\)' % link_speed,
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hdparm.stdout, re.MULTILINE):
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raise error.TestFail('Link speed %s not supported' % link_speed)
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