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|
import contextlib
import logging
import json
from io import StringIO
from teuthology import misc as teuthology
from teuthology import contextutil
from teuthology.orchestra import run
log = logging.getLogger(__name__)
@contextlib.contextmanager
def task(ctx, config):
log.info('Setting up nvme_loop on scratch devices...')
host = 'hostnqn'
port = '1'
devs_by_remote = {}
old_scratch_by_remote = {}
for remote, roles in ctx.cluster.remotes.items():
if remote.is_container:
continue
devs = teuthology.get_scratch_devices(remote)
devs_by_remote[remote] = devs
base = '/sys/kernel/config/nvmet'
remote.run(
args=[
'grep', '^nvme_loop', '/proc/modules', run.Raw('||'),
'sudo', 'modprobe', 'nvme_loop',
run.Raw('&&'),
'sudo', 'mkdir', '-p', f'{base}/hosts/{host}',
run.Raw('&&'),
'sudo', 'mkdir', '-p', f'{base}/ports/{port}',
run.Raw('&&'),
'echo', 'loop', run.Raw('|'),
'sudo', 'tee', f'{base}/ports/{port}/addr_trtype',
]
)
for dev in devs:
short = dev.split('/')[-1]
log.info(f'Connecting nvme_loop {remote.shortname}:{dev}...')
remote.run(
args=[
'sudo', 'mkdir', '-p', f'{base}/subsystems/{short}',
run.Raw('&&'),
'echo', '1', run.Raw('|'),
'sudo', 'tee', f'{base}/subsystems/{short}/attr_allow_any_host',
run.Raw('&&'),
'sudo', 'mkdir', '-p', f'{base}/subsystems/{short}/namespaces/1',
run.Raw('&&'),
'echo', '-n', dev, run.Raw('|'),
'sudo', 'tee', f'{base}/subsystems/{short}/namespaces/1/device_path',
run.Raw('&&'),
'echo', '1', run.Raw('|'),
'sudo', 'tee', f'{base}/subsystems/{short}/namespaces/1/enable',
run.Raw('&&'),
'sudo', 'ln', '-s', f'{base}/subsystems/{short}',
f'{base}/ports/{port}/subsystems/{short}',
run.Raw('&&'),
'sudo', 'nvme', 'connect', '-t', 'loop', '-n', short, '-q', host,
]
)
# identify nvme_loops devices
old_scratch_by_remote[remote] = remote.read_file('/scratch_devs')
with contextutil.safe_while(sleep=1, tries=15) as proceed:
while proceed():
p = remote.run(args=['sudo', 'nvme', 'list', '-o', 'json'], stdout=StringIO())
new_devs = []
# `nvme list -o json` will return one of the following output:
'''{
"Devices" : [
{
"DevicePath" : "/dev/nvme0n1",
"Firmware" : "8DV101H0",
"Index" : 0,
"ModelNumber" : "INTEL SSDPEDMD400G4",
"ProductName" : "Unknown Device",
"SerialNumber" : "PHFT620400WB400BGN"
},
{
"DevicePath" : "/dev/nvme1n1",
"Firmware" : "5.15.0-1",
"Index" : 1,
"ModelNumber" : "Linux",
"ProductName" : "Unknown Device",
"SerialNumber" : "7672ce414766ba44a8e5"
}
]
}'''
'''{
"Devices":[
{
"HostNQN":"nqn.2014-08.org.nvmexpress:uuid:00000000-0000-0000-0000-0cc47ada6ba4",
"HostID":"898a0e10-da2d-4a42-8017-d9c445089d0c",
"Subsystems":[
{
"Subsystem":"nvme-subsys0",
"SubsystemNQN":"nqn.2014.08.org.nvmexpress:80868086CVFT623300LN400BGN INTEL SSDPEDMD400G4",
"Controllers":[
{
"Controller":"nvme0",
"Cntlid":"0",
"SerialNumber":"CVFT623300LN400BGN",
"ModelNumber":"INTEL SSDPEDMD400G4",
"Firmware":"8DV101H0",
"Transport":"pcie",
"Address":"0000:02:00.0",
"Slot":"2",
"Namespaces":[
{
"NameSpace":"nvme0n1",
"Generic":"ng0n1",
"NSID":1,
"UsedBytes":400088457216,
"MaximumLBA":781422768,
"PhysicalSize":400088457216,
"SectorSize":512
}
],
"Paths":[
]
}
],
"Namespaces":[
]
}
]
}
]
}
'''
'''{
"Devices":[
{
"HostNQN":"nqn.2014-08.org.nvmexpress:uuid:00000000-0000-0000-0000-0cc47ada6ba4",
"HostID":"898a0e10-da2d-4a42-8017-d9c445089d0c",
"Subsystems":[
{
"Subsystem":"nvme-subsys0",
"SubsystemNQN":"nqn.2014.08.org.nvmexpress:80868086CVFT534400C2400BGN INTEL SSDPEDMD400G4",
"Controllers":[
{
"Controller":"nvme0",
"Cntlid":"0",
"SerialNumber":"CVFT534400C2400BGN",
"ModelNumber":"INTEL SSDPEDMD400G4",
"Firmware":"8DV101H0",
"Transport":"pcie",
"Address":"0000:02:00.0",
"Slot":"2",
"Namespaces":[
{
"NameSpace":"nvme0n1",
"Generic":"ng0n1",
"NSID":1,
"UsedBytes":400088457216,
"MaximumLBA":781422768,
"PhysicalSize":400088457216,
"SectorSize":512
}
],
"Paths":[
]
}
],
"Namespaces":[
]
}
]
}
]
}
'''
nvme_list = json.loads(p.stdout.getvalue())
for device in nvme_list['Devices']:
try:
# first try format 1 / older format
dev = device['DevicePath']
vendor = device['ModelNumber']
if dev.startswith('/dev/') and vendor == 'Linux':
new_devs.append(dev)
except KeyError:
for subsystem in device['Subsystems']:
# format 2
if 'Namespaces' in subsystem and subsystem['Namespaces']:
dev = '/dev/' + subsystem['Namespaces'][0]['NameSpace']
# try format 3 last
else:
dev = '/dev/' + subsystem['Controllers'][0]['Namespaces'][0]['NameSpace']
# vendor is the same for format 2 and 3
vendor = subsystem['Controllers'][0]['ModelNumber']
if vendor == 'Linux':
new_devs.append(dev)
log.info(f'new_devs {new_devs}')
assert len(new_devs) <= len(devs)
if len(new_devs) == len(devs):
break
remote.write_file(
path='/scratch_devs',
data='\n'.join(new_devs) + '\n',
sudo=True
)
try:
yield
finally:
for remote, devs in devs_by_remote.items():
if remote.is_container:
continue
for dev in devs:
short = dev.split('/')[-1]
log.info(f'Disconnecting nvme_loop {remote.shortname}:{dev}...')
remote.run(
args=[
'sudo', 'nvme', 'disconnect', '-n', short
],
check_status=False,
)
remote.write_file(
path='/scratch_devs',
data=old_scratch_by_remote[remote],
sudo=True
)
|
