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Filename :
plugin_scsi_host.cpython-39.pyc
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a �]�i� � @ sl d dl Z ddlmZ ddlT d dlZd dlmZ d dlm Z d dl Z d dl Z ej � � ZG dd� dej�ZdS )� N� )�hotplug)�*)�commandsc s� e Zd ZdZ� fdd�Z� fdd�Zdd� Zedd � �Zd d � Z d d � Z � fdd�Z � fdd�Z � fdd�Z edd� �Zdd� Zdd� Zdd� Zd d � Zd d � Zed d!d"�d#d$� �Zed �d(d&d'��Z� ZS ))�SCSIHostPlugina� Tunes options for SCSI hosts. The plug-in sets Aggressive Link Power Management (ALPM) to the value specified by the [option]`alpm` option. The option takes one of four values: `min_power`, `med_power_with_dipm`, `medium_power` and `max_performance`. NOTE: ALPM is only available on SATA controllers that use the Advanced Host Controller Interface (AHCI). .ALPM setting when extended periods of idle time are expected ==== ---- [scsi_host] alpm=med_power_with_dipm ---- ==== c s" t t| �j|i |�� t� | _d S �N)�superr �__init__r �_cmd)�self�args�kwargs�� __class__� �B/usr/lib/python3.9/site-packages/tuned/plugins/plugin_scsi_host.pyr s zSCSIHostPlugin.__init__c sR t t| ��� d| _t� | _| j�d�D ] }| �|�r(| j� |j � q(t� | _ d S )NT�scsi) r r � _init_devicesZ_devices_supported�setZ _free_devices�_hardware_inventoryZ get_devices�_device_is_supported�addZsys_nameZ_assigned_devices�r �devicer r r r % s z SCSIHostPlugin._init_devicesc s � fdd�|D �S )Nc s g | ]}� j �d |��qS )r )r Z get_device)�.0�x�r r r � <listcomp>0 � z6SCSIHostPlugin._get_device_objects.<locals>.<listcomp>r )r Zdevicesr r r �_get_device_objects/ s z"SCSIHostPlugin._get_device_objectsc C s |j dkS )NZ scsi_host)Z device_type)�clsr r r r r 2 s z#SCSIHostPlugin._device_is_supportedc C s | j �| d| j� d S )Nr )r Z subscribe�_hardware_events_callbackr r r r �_hardware_events_init6 s z$SCSIHostPlugin._hardware_events_initc C s | j �| � d S r )r Z unsubscriber r r r �_hardware_events_cleanup9 s z'SCSIHostPlugin._hardware_events_cleanupc s | � |�r tt| ��||� d S r )r r r r! )r Zeventr r r r r! < s z(SCSIHostPlugin._hardware_events_callbackc s t t| ��||� d S r )r r �_added_device_apply_tuning�r �instanceZ device_namer r r r$ @ s z)SCSIHostPlugin._added_device_apply_tuningc s t t| ��||� d S r )r r � _removed_device_unapply_tuningr% r r r r' C s z-SCSIHostPlugin._removed_device_unapply_tuningc C s dd iS )N�alpmr )r r r r �_get_config_optionsF s �z"SCSIHostPlugin._get_config_optionsc C s d|_ d|_d S )NTF)Z_has_static_tuningZ_has_dynamic_tuning�r r& r r r �_instance_initL s z SCSIHostPlugin._instance_initc C s d S r r r* r r r �_instance_cleanupP s z SCSIHostPlugin._instance_cleanupc C s t j�dt|�d�S )N�/sys/class/scsi_host/Z link_power_management_policy��os�path�join�strr r r r �_get_alpm_policy_fileS s z$SCSIHostPlugin._get_alpm_policy_filec C s t j�dt|�d�S )Nr- Z ahci_port_cmdr. r r r r �_get_ahci_port_cmd_fileV s z&SCSIHostPlugin._get_ahci_port_cmd_filec C s8 | � |�}tj�|�sdS t| j�|�d�}|d@ dkS )NF� i $ r )r4 r/ r0 �isfile�intr � read_file)r r Z port_cmd_fileZport_cmdr r r �_is_external_sata_portY s z%SCSIHostPlugin._is_external_sata_portr( T)Z per_devicec C s� |d u r d S | � |�r,t�dt|� � d S | �|�}|s�tj�|�rf| jj |||r\t j gndd� nt�d|t|�f � d S |S )NzUDevice '%s' is an external SATA controller, skipping ALPM setting to support hot plugF�Zno_errorzBALPM control file ('%s') not found, skipping ALPM setting for '%s') r9 �log�infor2 r3 r/ r0 �existsr Z write_to_file�errno�ENOENT)r �policyr r& Zsim�remove� policy_filer r r � _set_alpmb s �zSCSIHostPlugin._set_alpmFc C s. | � |�}| jj|dd��� }|dkr*|S d S )NTr: � )r3 r r8 �strip)r r r& Zignore_missingrB r@ r r r � _get_alpmu s zSCSIHostPlugin._get_alpm)F)�__name__� __module__� __qualname__�__doc__r r r � classmethodr r" r# r! r$ r' r) r+ r, r3 r4 r9 Z command_setrC Z command_getrF � __classcell__r r r r r s, r )r> rD r Z decoratorsZ tuned.logsZtunedZ tuned.constsZconstsZtuned.utils.commandsr r/ �reZlogs�getr; ZPluginr r r r r �<module> s