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How to use xfs_tunables method in autotest

Best Python code snippet using autotest_python

fsinfo.py

Source:fsinfo.py

...150        if key in conversions:151            mkfs_option[value] = conversions[key](tune2fs_dict, key)152        else:153            mkfs_option[value] = tune2fs_dict[key]154def xfs_tunables(dev):155    """Call xfs_grow -n to get filesystem tunables."""156    # Have to mount the filesystem to call xfs_grow.157    tmp_mount_dir = tempfile.mkdtemp()158    cmd = 'mount %s %s' % (dev, tmp_mount_dir)159    utils.system_output(cmd)160    xfs_growfs = os.path.join(os.environ['AUTODIR'], 'tools', 'xfs_growfs')161    cmd = '%s -n %s' % (xfs_growfs, dev)162    try:163        out = utils.system_output(cmd)164    finally:165        # Clean.166        cmd = 'umount %s' % dev167        utils.system_output(cmd, ignore_status=True)168        os.rmdir(tmp_mount_dir)...

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