117 lines
3.9 KiB
Python
117 lines
3.9 KiB
Python
"""
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SPDK NVMFDRIVER module implementation.
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"""
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from cyborg.accelerator.drivers.spdk.util.pyspdk.nvmf_client import NvmfTgt
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from oslo_log import log as logging
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from cyborg.accelerator.common import exception
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from cyborg.accelerator.drivers.spdk.util import common_fun
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from cyborg.accelerator.drivers.spdk.spdk import SPDKDRIVER
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from cyborg.accelerator.drivers.spdk.util.pyspdk.py_spdk import PySPDK
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LOG = logging.getLogger(__name__)
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class NVMFDRIVER(SPDKDRIVER):
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"""NVMFDRIVER class.
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nvmf_tgt server app should be able to implement this driver.
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"""
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SERVER = 'nvmf'
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def __init__(self, *args, **kwargs):
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super(NVMFDRIVER, self).__init__(*args, **kwargs)
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self.servers = common_fun.discover_servers()
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self.py = common_fun.get_py_client(self.SERVER)
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def discover_accelerator(self):
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if common_fun.check_for_setup_error(self.py, self.SERVER):
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return self.get_one_accelerator()
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def get_one_accelerator(self):
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acc_client = NvmfTgt(self.py)
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bdevs = acc_client.get_bdevs()
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# Display current blockdev list
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subsystems = acc_client.get_nvmf_subsystems()
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# Display nvmf subsystems
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accelerator_obj = {
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'server': self.SERVER,
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'bdevs': bdevs,
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'subsystems': subsystems
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}
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return accelerator_obj
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def install_accelerator(self, driver_id, driver_type):
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pass
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def uninstall_accelerator(self, driver_id, driver_type):
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pass
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def accelerator_list(self):
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return self.get_all_accelerators()
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def get_all_accelerators(self):
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accelerators = []
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for accelerator_i in range(len(self.servers)):
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accelerator = self.servers[accelerator_i]
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py_tmp = PySPDK(accelerator)
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if py_tmp.is_alive():
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accelerators.append(self.get_one_accelerator())
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return accelerators
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def update(self, driver_type, **kwargs):
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pass
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def attach_instance(self, instance_id):
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pass
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def detach_instance(self, instance_id):
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pass
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def delete_subsystem(self, nqn):
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"""Delete a nvmf subsystem
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:param nqn: Target nqn(ASCII).
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:raise exception: Invaid
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"""
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if nqn == "":
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acc_client = NvmfTgt(self.py)
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acc_client.delete_nvmf_subsystem(nqn)
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else:
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raise exception.Invalid('Delete nvmf subsystem failed.')
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def construct_subsystem(self,
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nqn,
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listen,
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hosts,
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serial_number,
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namespaces
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):
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"""Add a nvmf subsystem
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:param nqn: Target nqn(ASCII).
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:param listen: comma-separated list of Listen
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<trtype:transport_name traddr:address trsvcid:port_id>
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pairs enclosed in quotes. Format:'trtype:transport0
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traddr:traddr0 trsvcid:trsvcid0,trtype:transport1
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traddr:traddr1 trsvcid:trsvcid1' etc.
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Example: 'trtype:RDMA traddr:192.168.100.8 trsvcid:4420,
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trtype:RDMA traddr:192.168.100.9 trsvcid:4420.'
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:param hosts: Whitespace-separated list of host nqn list.
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:param serial_number: Example: 'SPDK00000000000001.
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:param namespaces: Whitespace-separated list of namespaces.
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:raise exception: Invaid
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"""
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if ((namespaces != '' and listen != '') and
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(hosts != '' and serial_number != '')) and nqn != '':
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acc_client = NvmfTgt(self.py)
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acc_client.construct_nvmf_subsystem(nqn,
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listen,
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hosts,
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serial_number,
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namespaces
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)
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else:
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raise exception.Invalid('Construct nvmf subsystem failed.')
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