def prepare_config_file(self):
'''
Prepare DRDB resource config file
'''
context = [
rf'resource {self.res_name} {{', rf'\ \ \ \ on maxluntarget {{',
rf'\ \ \ \ \ \ \ \ device /dev/{self.drbd_device_name}\;',
rf'\ \ \ \ \ \ \ \ disk {self.blk_dev_name}\;',
rf'\ \ \ \ \ \ \ \ address 10.203.1.199:7789\;',
rf'\ \ \ \ \ \ \ \ node-id 0\;',
rf'\ \ \ \ \ \ \ \ meta-disk internal\;', r'\ \ \ \}', r'}'
]
# for echo_command in context:
# echo_result = self.ssh.excute_command(
# f'echo {echo_command} >> /etc/drbd.d/{self.res_name}.res')
# if echo_result is True:
# continue
# else:
# s.pe('fail to prepare drbd config file..')
for i in range(len(context)):
if i == 0:
echo_result = self.ssh.excute_command(
f'echo {context[i]} > /etc/drbd.d/{self.res_name}.res')
else:
echo_result = self.ssh.excute_command(
f'echo {context[i]} >> /etc/drbd.d/{self.res_name}.res')
if echo_result is True:
continue
else:
s.pe('fail to prepare drbd config file..')
print(f'Create DRBD config file "{self.res_name}.res" done')
def start_test(self):
if not self.find_session:
self.iscsi_login()
dev_name = self.explore_disk()
mount_status = self.format_mount(dev_name)
if mount_status:
self.get_test_perf()
else:
s.pe(f'Device {dev_name} mount failed')
def _setting_order(self):
'''
Setting up iSCSILogicalUnit resources of order
'''
order_cmd = f'crm conf order {self.order_name} {self.target_name} {self.lu_name}'
set_order = self.ssh.excute_command(order_cmd)
if set_order is True:
print('setting order succeed')
return True
else:
s.pe('setting order failed')
def _setting_col(self):
'''
Setting up iSCSILogicalUnit resources of colocation
'''
col_cmd = f'crm conf colocation {self.colocation_name} inf: {self.lu_name} {self.target_name}'
set_col = self.ssh.excute_command(col_cmd)
if set_col is True:
print('setting colocation successful')
return True
else:
s.pe('setting colocation failed')
def _drbd_primary(self):
'''
Complete initial synchronization of resources
'''
primary_cmd = f'drbdadm primary --force {self.res_name}'
drbd_primary = self.ssh.excute_command(primary_cmd)
if drbd_primary is True:
print(f'{self.res_name} primary success')
return True
else:
s.pe(f'drbd resource {self.res_name} primary failed')
def _drbd_up(self):
'''
Start DRBD resource
'''
up_cmd = f'drbdadm up {self.res_name}'
drbd_up = self.ssh.excute_command(up_cmd)
if drbd_up is True:
print(f'{self.res_name} up success')
return True
else:
s.pe(f'drbd resource {self.res_name} up failed')
def _connect(self):
try:
self.telnet.open(self._host, self._port)
self.telnet.read_until(b'Username:'******'\n')
self.telnet.read_until(b'Password:'******'\n')
except Exception as e:
s.pe(f'Connect to {self._host} failed with error: {e}')
def _crm_start(self):
'''
start the iSCSILogicalUnit resource
'''
crm_start_cmd = f'crm res start {self.lu_name}'
crm_start = self.ssh.excute_command(crm_start_cmd)
if crm_start is True:
print('iscsi lun start successful')
return True
else:
s.pe('iscsi lun start failed')
def _connect(self):
try:
objSSHClient = paramiko.SSHClient()
objSSHClient.set_missing_host_key_policy(paramiko.AutoAddPolicy())
objSSHClient.connect(self._host,
port=self._port,
username=self._username,
password=self._password,
timeout=self._timeout)
self.SSHConnection = objSSHClient
except Exception as e:
s.pe(f'Connect to {self._host} failed with error: {e}')
def _get_dd_perf(self, arg_str):
'''
Use re to get the speed of test
'''
re_performance = re.compile(r'.*s, ([0-9.]* [A-Z]B/s)')
string = arg_str.decode('utf-8')
re_result = re_performance.findall(string)
perf = re_result
if perf:
return perf[0]
else:
s.pe('Can not get test result')
def explore_disk(self):
'''
Scan and get the device path from VersaPLX
'''
if self.ssh.excute_command('/usr/bin/rescan-scsi-bus.sh'):
time.sleep(0.5)
lsscsi_result = self.ssh.excute_command('lsscsi')
else:
s.pe(f'Scan new LUN failed on VersaPLX')
re_find_id_dev = r'\:(\d*)\].*LIO-ORG[ 0-9a-zA-Z._]*(/dev/sd[a-z]{1,3})'
return s.GetDiskPath(self.id, re_find_id_dev, lsscsi_result,
'VersaPLX').explore_disk()
def discover_new_lun(self):
'''
Scan and find the disk from NetApp
'''
if self.ssh.excute_command('/usr/bin/rescan-scsi-bus.sh'):
lsscsi_result = self.ssh.excute_command('lsscsi')
else:
s.pe(f'Scan new LUN failed on NetApp')
re_find_id_dev = r'\:(\d*)\].*NETAPP[ 0-9a-zA-Z._]*(/dev/sd[a-z]{1,3})'
self.blk_dev_name = s.GetDiskPath(self.id, re_find_id_dev,
lsscsi_result,
'NetApp').explore_disk()
print(f'Find device {self.blk_dev_name} for LUN id {self.id}')
def iscsi_login(self):
'''
Discover iSCSI and login to session
'''
login_cmd = f'iscsiadm -m discovery -t st -p {vplx_ip} -l'
login_result = self.ssh.excute_command(login_cmd)
if login_result:
login_result = login_result.decode('utf-8')
re_login = re.compile(f'Login to.*portal: ({vplx_ip}).*successful')
re_result = re_login.findall(login_result)
if re_result:
return True
else:
s.pe(f'iscsi login to {vplx_ip} failed')
def _crm_create(self):
'''
Create iSCSILogicalUnit resource
'''
crm_create_cmd = f'crm conf primitive {self.lu_name} \
iSCSILogicalUnit params target_iqn="{self.target_iqn}" \
implementation=lio-t lun={self.id} path="/dev/{self.drbd_device_name}"\
allowed_initiators="{self.initiator_iqn}" op start timeout=40 interval=0 op stop timeout=40 interval=0 op monitor timeout=40 interval=50 meta target-role=Stopped'
if self.ssh.excute_command(crm_create_cmd) is True:
print('iscisi lun_create success')
return True
else:
s.pe('iscisi lun_create failed')
def format_mount(self, dev_name):
'''
Format disk and mount disk
'''
format_cmd = f'mkfs.ext4 {dev_name} -F'
cmd_result = self.ssh.excute_command(format_cmd)
if self._judge_format(cmd_result):
mount_cmd = f'mount {dev_name} {mount_point}'
if self.ssh.excute_command(mount_cmd) == True:
return True
else:
s.pe(f"mount {dev_name} to {mount_point} failed")
else:
s.pe("format disk %s failed" % dev_name)
def drbd_status_verify(self):
'''
Check DRBD resource status and confirm the status is UpToDate
'''
verify_cmd = f'drbdadm status {self.res_name}'
result = self.ssh.excute_command(verify_cmd)
if result:
result = result.decode('utf-8')
re_display = re.compile(r'''disk:(\w*)''')
re_result = re_display.findall(result)
if re_result:
status = re_result[0]
if status == 'UpToDate':
print(f'{self.res_name} DRBD check successful')
return True
else:
s.pe(f'{self.res_name} DRBD verification failed')
else:
s.pe(f'{self.res_name} DRBD does not exist')
def _drbd_init(self):
'''
Initiakize DRBD resource
'''
init_cmd = f'drbdadm create-md {self.res_name}'
drbd_init = self.ssh.excute_command(init_cmd)
if drbd_init:
drbd_init = drbd_init.decode('utf-8')
re_drbd = re.compile(
'New drbd meta data block successfully created')
re_init = re_drbd.findall(drbd_init)
if re_init:
print(f'{self.res_name} initialize success')
return True
else:
s.pe(f'drbd resource {self.res_name} initialize failed')
else:
s.pe(f'drbd resource {self.res_name} initialize failed')