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usr
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lib
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python3.9
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site-packages
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tuned
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plugins
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__pycache__
📍 /usr/lib/python3.9/site-packages/tuned/plugins/__pycache__
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Editing: plugin_mounts.cpython-39.pyc
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a �]�i� � @ sr d dl mZ ddlmZ ddlT d dlmZmZ d dlZ d dl m Z d dl Z e j �� Ze � ZG dd� dej�ZdS ) � N� )�base)�*)�Popen�PIPE)�commandsc @ st e Zd ZdZedd� �Zdd� Zedd� �Zdd � Zd d � Z d d � Z dd� Z dd� Z dd� Z eddd�dd� �ZdS )� MountsPlugina= Enables or disables barriers for mounts according to the value of the boolean option [option]`disable_barriers`. The option additionally allows the special value `force`, which disables barriers even on mountpoints with write back caches. NOTE: Only extended file systems (ext) are supported by this plug-in. c C s� i }d}t g d�ttddd��� \}}dd� |�� D �D ]�}t|�dk rJq8|dd� \}}}t|�dkrp|d nd} t|�dkr�|d nd} |d kr�|}q8|d ks8|d vr�q8| du s8| d kr�q8|�| t� || d �� || d �|� q8|| _dS )z� Gets the information about disks, partitions and mountpoints. Stores information about used filesystem and creates a list of all underlying devices (in case of LVM) for each mountpoint. N)Zlsblkz-rnoz TYPE,RM,KNAME,FSTYPE,MOUNTPOINTT)�stdout�stderrZ close_fdsZuniversal_newlinesc S s g | ] }|� � �qS � )�split)�.0�liner r �?/usr/lib/python3.9/site-packages/tuned/plugins/plugin_mounts.py� <listcomp># � z>MountsPlugin._generate_mountpoint_topology.<locals>.<listcomp>� � Zdisk�1)�partZlvmz[SWAP])�disks� device_name� filesystemr ) r r Z communicate� splitlines�len� setdefault�set�add�_mountpoint_topology) �clsZmountpoint_topologyZ current_diskr r �columnsZ device_typeZdevice_removabler r � mountpointr r r � _generate_mountpoint_topology s, � z*MountsPlugin._generate_mountpoint_topologyc C s* | � � d| _t| j�� �| _t� | _d S )NT)r" Z_devices_supportedr r �keysZ _free_devicesZ_assigned_devices��selfr r r � _init_devices: s zMountsPlugin._init_devicesc C s dd iS )N�disable_barriersr r$ r r r �_get_config_options@ s �z MountsPlugin._get_config_optionsc C s d|_ d|_d S )NFT)Z_has_dynamic_tuningZ_has_static_tuning�r% �instancer r r �_instance_initF s zMountsPlugin._instance_initc C s d S )Nr r) r r r �_instance_cleanupJ s z MountsPlugin._instance_cleanupc C s, t � d| �}|D ]}t�|��� S dS )zV Get device cache type. This will work only for devices on SCSI kernel subsystem. z+/sys/block/%s/device/scsi_disk/*/cache_typeN)�glob�cmdZ read_file�strip)r% �deviceZsource_filenamesZsource_filenamer r r �_get_device_cache_typeM s z#MountsPlugin._get_device_cache_typec C s, | j | d D ]}| �|�dkr dS qdS )zr Checks if the device has 'write back' cache. If the cache type cannot be determined, asume some other cache. r z write backTF)r r1 )r% r! r0 r r r � _mountpoint_has_writeback_cacheV s z,MountsPlugin._mountpoint_has_writeback_cachec C s� t d��\}|D ]6}|�� }|d d dkr,q|d |kr|d } qVqW d � dS W d � n1 sj0 Y |�d�}|D ]@}|�d�\}} } |d ks�|d kr�| d kr� d S |d kr� d S q�d S )zP Checks if a given mountpoint is mounted with barriers enabled or disabled. z /proc/mountsr �/r r N�,�=Z nobarrierZbarrier�0FT)�openr � partition) r% r! Z mounts_filer r Z option_list�options�option�name�sep�valuer r r �_mountpoint_has_barriers_ s" . z%MountsPlugin._mountpoint_has_barriersc C s d|dd| g}t �|� dS )z Remounts partition. z/usr/bin/mountz-oz remount,%sN)r. Zexecute)r% r8 r9 Zremount_commandr r r �_remount_partition| s z MountsPlugin._remount_partitionr' T)Z per_devicec C sX | j d|d�}t|��� dk}|p*| �|�}|�r |s:d S d } | j| d �d�sXd} nj|sl| �|�rld} nV| �|�} | d u r�d} n>| d kr�|r�t� t j | � d S d } n|r�t� t j | � d S | d ur�t� d || f � d S | j�|| � t� d | � | �|d� nJ|�rd S | j�|�} | d u �r.d S t� d| � | �|d� | j�|� d S )Nr' )Z command_namer �forcer �extzfilesystem not supportedz device uses write back cachezunknown current settingFTzbarriers already disabledz#not disabling barriers on '%s' (%s)zdisabling barriers on '%s'z barrier=0zenabling barriers on '%s'z barrier=1)Z _storage_key�str�lowerZ _option_boolr � startswithr2 r> �log�info�constsZSTR_VERIFY_PROFILE_OK�errorZSTR_VERIFY_PROFILE_FAILZ_storager r? �getZunset) r% �startr= r! ZverifyZignore_missingr* Z storage_keyr@ Z reject_reason�original_valuer r r �_disable_barriers� sP � z MountsPlugin._disable_barriersN)�__name__� __module__� __qualname__�__doc__� classmethodr" r& r( r+ r, r1 r2 r> r? Zcommand_customrL r r r r r s # r )Z tuned.constsrG � r Z decorators� subprocessr r Z tuned.logsZtunedZtuned.utils.commandsr r- ZlogsrI rE r. ZPluginr r r r r �<module> s
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