mirror of
https://github.com/xcat2/confluent.git
synced 2024-11-23 01:53:28 +00:00
68ce3d039d
Some versions start manifesting nvme devnames with 'c', which are to be used to interact with multipath to have raw devices backing a traditional nvme device.
96 lines
3.2 KiB
Plaintext
96 lines
3.2 KiB
Plaintext
import subprocess
|
|
import os
|
|
|
|
class DiskInfo(object):
|
|
def __init__(self, devname):
|
|
if devname.startswith('nvme') and 'c' in devname:
|
|
raise Exception("Skipping multipath devname")
|
|
self.name = devname
|
|
self.wwn = None
|
|
self.path = None
|
|
self.model = ''
|
|
self.size = 0
|
|
self.driver = None
|
|
self.mdcontainer = ''
|
|
devnode = '/dev/{0}'.format(devname)
|
|
qprop = subprocess.check_output(
|
|
['udevadm', 'info', '--query=property', devnode])
|
|
if not isinstance(qprop, str):
|
|
qprop = qprop.decode('utf8')
|
|
for prop in qprop.split('\n'):
|
|
if '=' not in prop:
|
|
continue
|
|
k, v = prop.split('=', 1)
|
|
if k == 'DEVTYPE' and v != 'disk':
|
|
raise Exception('Not a disk')
|
|
elif k == 'DM_NAME':
|
|
raise Exception('Device Mapper')
|
|
elif k == 'ID_MODEL':
|
|
self.model = v
|
|
elif k == 'DEVPATH':
|
|
self.path = v
|
|
elif k == 'ID_WWN':
|
|
self.wwn = v
|
|
elif k == 'MD_CONTAINER':
|
|
self.mdcontainer = v
|
|
attrs = subprocess.check_output(['udevadm', 'info', '-a', devnode])
|
|
if not isinstance(attrs, str):
|
|
attrs = attrs.decode('utf8')
|
|
for attr in attrs.split('\n'):
|
|
if '==' not in attr:
|
|
continue
|
|
k, v = attr.split('==', 1)
|
|
k = k.strip()
|
|
if k == 'ATTRS{size}':
|
|
self.size = v.replace('"', '')
|
|
elif (k == 'DRIVERS' and not self.driver
|
|
and v not in ('"sd"', '""')):
|
|
self.driver = v.replace('"', '')
|
|
if not self.driver and 'imsm' not in self.mdcontainer:
|
|
raise Exception("No driver detected")
|
|
if os.path.exists('/sys/block/{0}/size'.format(self.name)):
|
|
with open('/sys/block/{0}/size'.format(self.name), 'r') as sizesrc:
|
|
self.size = int(sizesrc.read()) * 512
|
|
if int(self.size) < 536870912:
|
|
raise Exception("Device too small for install")
|
|
|
|
@property
|
|
def priority(self):
|
|
if self.model.lower() in ('m.2 nvme 2-bay raid kit', 'thinksystem_m.2_vd', 'thinksystem m.2', 'thinksystem_m.2'):
|
|
return 0
|
|
if 'imsm' in self.mdcontainer:
|
|
return 1
|
|
if self.driver == 'ahci':
|
|
return 2
|
|
if self.driver.startswith('megaraid'):
|
|
return 3
|
|
if self.driver.startswith('mpt'):
|
|
return 4
|
|
return 99
|
|
|
|
def __repr__(self):
|
|
return repr({
|
|
'name': self.name,
|
|
'path': self.path,
|
|
'wwn': self.wwn,
|
|
'driver': self.driver,
|
|
'size': self.size,
|
|
'model': self.model,
|
|
})
|
|
|
|
|
|
def main():
|
|
disks = []
|
|
for disk in sorted(os.listdir('/sys/class/block')):
|
|
try:
|
|
disk = DiskInfo(disk)
|
|
disks.append(disk)
|
|
except Exception as e:
|
|
print("Skipping {0}: {1}".format(disk, str(e)))
|
|
nd = [x.name for x in sorted(disks, key=lambda x: x.priority)]
|
|
if nd:
|
|
open('/tmp/installdisk', 'w').write(nd[0])
|
|
|
|
if __name__ == '__main__':
|
|
main()
|