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ó ±EYc @ sÚ d d l Z d d l m Z d d l m Z d d l m Z d d l m Z d d l m Z d d l m Z d d l m Z d d l m Z d d l m Z e j Z e j e Z d e f d YZ e d Z d S( iÿÿÿÿN( t cfg( t log( t jsonutils( t exception( t _LW( t objects( t fields( t stats( t whitelistt PciDevTrackerc B s¹ e Z d Z d d Z d Z d Z e d Z d Z e d Z d Z d Z d Z d Z d Z d Z d d Z d Z d Z d Z d Z RS( sj Manage pci devices in a compute node. This class fetches pci passthrough information from hypervisor and tracks the usage of these devices. It's called by compute node resource tracker to allocate and free devices to/from instances, and to update the available pci passthrough devices information from hypervisor periodically. `pci_devs` attribute of this class is the in-memory "master copy" of all devices on each compute host, and all data changes that happen when claiming/allocating/freeing devices HAVE TO be made against instances contained in `pci_devs` list, because they are periodically flushed to the DB when the save() method is called. It is unsafe to fetch PciDevice objects elsewhere in the code for update purposes as those changes will end up being overwritten when the `pci_devs` are saved. c C s¯ t t | j i | _ | | _ t j t j | _ t j d | j | _ | | _ | r| t j j | | | _ n t j d g | _ | j | j | j d S( s Create a pci device tracker. If a node_id is passed in, it will fetch pci devices information from database, otherwise, it will create an empty devices list and the resource tracker will update the node_id information later. t dev_filterR N( t superR t __init__t stalet node_idR t Whitelistt CONFt pci_passthrough_whitelistR R t PciDeviceStatst _contextR t PciDeviceListt get_by_compute_nodet pci_devst _build_device_treet _initial_instance_usage( t selft contextR ( ( sE /home/tvault/.virtenv/lib/python2.7/site-packages/nova/pci/manager.pyR 8 s c C sÅ t j t | _ t j t | _ x | j D] } | j } | j t j j k ri | j | j | q. | j t j j k r | j | j | q. | j t j j k r. | j j | q. q. Wd S( N( t collectionst defaultdictt listt allocationst claimsR t instance_uuidt statusR t PciDeviceStatust CLAIMEDt appendt ALLOCATEDt AVAILABLER t add_device( R t devt uuid( ( sE /home/tvault/.virtenv/lib/python2.7/site-packages/nova/pci/manager.pyR N s c C sr xk | j D]` } | j r | j | : | j | j t j j k ra | j j j | n Wd QXq q Wd S( N( R t obj_what_changedt obj_alternate_contextt saveR! R R" t DELETEDR t remove( R R R( ( ( sE /home/tvault/.virtenv/lib/python2.7/site-packages/nova/pci/manager.pyR, Z s c C s | j S( N( R ( R ( ( sE /home/tvault/.virtenv/lib/python2.7/site-packages/nova/pci/manager.pyt pci_statsb s c C sS g } x9 t j | D]( } | j j | r | j | q q W| j | d S( sû Sync the pci device tracker with hypervisor information. To support pci device hot plug, we sync with the hypervisor periodically, fetching all devices information from hypervisor, update the tracker and sync the DB information. Devices should not be hot-plugged when assigned to a guest, but possibly the hypervisor has no such guarantee. The best we can do is to give a warning if a device is changed or removed while assigned. :param devices_json: The JSON-ified string of device information that is returned from the virt driver's get_available_resource() call in the pci_passthrough_devices key. N( R t loadsR t device_assignableR$ t _set_hvdevs( R t devices_jsont devicesR( ( ( sE /home/tvault/.virtenv/lib/python2.7/site-packages/nova/pci/manager.pyt( update_devices_from_hypervisor_resourcesf s c C sÓ | j d d i } x³ | D]« } | j t j j t j j f k rM q n | j t j j k r{ g | _ | | | j <q | j t j j k r | j | j | _ | j rË | | j j j | qË q q Wd S( sþ Build a tree of devices that represents parent-child relationships. We need to have the relationships set up so that we can easily make all the necessary changes to parent/child devices without having to figure it out at each call site. This method just adds references to relevant instances already found in `pci_devs` to `child_devices` and `parent_device` fields of each one. Currently relationships are considered for SR-IOV PFs/VFs only. t keyc S s | j S( N( t address( t x( ( sE /home/tvault/.virtenv/lib/python2.7/site-packages/nova/pci/manager.pyt <lambda> s N( t sortR! R R" t REMOVEDR- t dev_typet PciDeviceTypet SRIOV_PFt child_devicesR7 t SRIOV_VFt gett parent_addrt parent_deviceR$ ( t all_devst parentsR( ( ( sE /home/tvault/.virtenv/lib/python2.7/site-packages/nova/pci/manager.pyR ~ s c sî t g | j D] } | j ^ q } t g | D] } | d ^ q/ } x| j D] j | | k rë y j Wn\ t j k r× } t j t d i j d 6 j d 6| j d 6 t j j _ qVX| j j qR t f d | D } | j | d < j t j j t j j f k rI| | j | d <qR j | qR Wx} g | D] } | d | | k rd| ^ qdD]N } | j | d <t j j | j | } | j j j | | j j | qW| j | j d S( NR7 s` Trying to remove device with %(status)s ownership %(instance_uuid)s because of %(pci_exception)sR! R t pci_exceptionc 3 s( | ] } | d j k r | Vq d S( R7 N( R7 ( t .0R( ( t existed( sE /home/tvault/.virtenv/lib/python2.7/site-packages/nova/pci/manager.pys <genexpr>¹ s t compute_node_id( t setR R7 R. R t PciDeviceInvalidStatust LOGt warningR R! R t format_messageR R" R; R t remove_devicet nextR R# R% R t update_deviceR t PciDevicet createR R$ R' R ( R R4 R( t exist_addrst new_addrst et new_valuet dev_obj( ( RH sE /home/tvault/.virtenv/lib/python2.7/site-packages/nova/pci/manager.pyR2 ¢ s4 %# $ c C s¡ d } | r | j } n | j j | j | } | s: d S| j } x | D] } | j | qJ W| r t d | D r t j t d i | d 6 n | S( Nc s s | ] } | j d k Vq d S( N( t numa_nodet None( RG R( ( ( sE /home/tvault/.virtenv/lib/python2.7/site-packages/nova/pci/manager.pys <genexpr>æ s s\ Assigning a pci device without numa affinity toinstance %(instance)s which has numa topologyt instance( RZ t cellsR t consume_requestst requestsR t claimt anyRL RM R ( R R t pci_requestst instance_numa_topologyt instance_cellst devsR R( ( ( sE /home/tvault/.virtenv/lib/python2.7/site-packages/nova/pci/manager.pyt _claim_instanceØ s c C s" x | D] } | j | q Wd S( N( t allocate( R R[ Rd R( ( ( sE /home/tvault/.virtenv/lib/python2.7/site-packages/nova/pci/manager.pyt _allocate_instanceì s c C sM | j j | d g } | j | | | rI | j | d c | 7<n d S( NR) ( R t popRg R ( R R[ Rd ( ( sE /home/tvault/.virtenv/lib/python2.7/site-packages/nova/pci/manager.pyt allocate_instanceð s c C sS g } | j rO | j rO | j } | j | | | } | rO | | j | <qO n | S( N( R R^ R Re R ( R R Ra Rb Rd R ( ( sE /home/tvault/.virtenv/lib/python2.7/site-packages/nova/pci/manager.pyt claim_instanceö s c C sG x@ | j D]5 } | | k r | j | d k r | j | q q Wd S( sÖ Free device from pci resource tracker :param dev: cloned pci device object that needs to be free :param instance: the instance that this pci device is allocated to R) N( R R t _free_device( R R( R[ t pci_dev( ( sE /home/tvault/.virtenv/lib/python2.7/site-packages/nova/pci/manager.pyt free_device s c C sb | j | } | j j | j d } | r= | j | n x | D] } | j j | qD Wd S( N( t freeR Rh R7 RZ RQ R R' ( R R( R[ t freed_devsR ( ( sE /home/tvault/.virtenv/lib/python2.7/site-packages/nova/pci/manager.pyRk s c C s_ xX | j D]M } | j t j j t j j f k r | j | d k rW | j | qW q q Wd S( NR) ( R R! R R" R# R% R Rk ( R R[ R( ( ( sE /home/tvault/.virtenv/lib/python2.7/site-packages/nova/pci/manager.pyt _free_instance s c C sV | j j | d d r) | j | n) | j j | d d rR | j | n d S( NR) ( R Rh RZ Rp R ( R R R[ ( ( sE /home/tvault/.virtenv/lib/python2.7/site-packages/nova/pci/manager.pyt free_instance! s c C sL | j s d S| d k r, | j | | n | d k rH | j | n d S( sB Update PCI usage information if devices are de/allocated. Niÿÿÿÿi ( R Rq Ri ( R R R[ t sign( ( sE /home/tvault/.virtenv/lib/python2.7/site-packages/nova/pci/manager.pyt update_pci_for_instance' s c C s t d | D } | t d | D O} | t d | D O} xY t | j D]H } | | k rZ | j j | g } x | D] } | j | q WqZ qZ WxY t | j D]H } | | k r¶ | j j | g } x | D] } | j | qä Wq¶ q¶ Wd S( s Remove all usages for instances not passed in the parameter. The caller should hold the COMPUTE_RESOURCE_SEMAPHORE lock c s s | ] } | d Vq d S( R) N( ( RG t inst( ( sE /home/tvault/.virtenv/lib/python2.7/site-packages/nova/pci/manager.pys <genexpr>7 s c s s | ] } | d Vq d S( R N( ( RG t mig( ( sE /home/tvault/.virtenv/lib/python2.7/site-packages/nova/pci/manager.pys <genexpr>8 s c s s | ] } | d Vq d S( R) N( ( RG Rt ( ( sE /home/tvault/.virtenv/lib/python2.7/site-packages/nova/pci/manager.pys <genexpr>9 s N( RJ R R Rh Rk R ( R t instancest migrationst orphansRH R) Rd R( ( ( sE /home/tvault/.virtenv/lib/python2.7/site-packages/nova/pci/manager.pyt clean_usage2 s N( t __name__t __module__t __doc__RZ R R R, t propertyR/ R5 t staticmethodR R2 Re Rg Ri Rj Rm Rk Rp Rq Rs Ry ( ( ( sE /home/tvault/.virtenv/lib/python2.7/site-packages/nova/pci/manager.pyR " s$ $ 6 c C sK | j } | d k r g Sg | D]' } | j | k sA | d k r | ^ q S( s Get the devices allocated to one or all requests for an instance. - For generic PCI request, the request id is None. - For sr-iov networking, the request id is a valid uuid - There are a couple of cases where all the PCI devices allocated to an instance need to be returned. Refer to libvirt driver that handles soft_reboot and hard_boot of 'xen' instances. t allN( t pci_devicesRZ t request_id( Rt R R t device( ( sE /home/tvault/.virtenv/lib/python2.7/site-packages/nova/pci/manager.pyt get_instance_pci_devsI s ( R t oslo_configR t oslo_logR t loggingt oslo_serializationR t novaR t nova.i18nR R t nova.objectsR t nova.pciR R R t getLoggerRz RL t objectR RZ R ( ( ( sE /home/tvault/.virtenv/lib/python2.7/site-packages/nova/pci/manager.pyt <module> s ÿ (