reboot the system and attach volume to instance of os version redhat 6.7 will failed and report error like following:
>>> vop.attach(connection_info)
No handlers could be found for logger "ZVMSDK"
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "volumeop.py", line 463, in attach
multipath, os_version)
File "volumeop.py", line 440, in _attach
raise exception.SDKBaseException(msg=errmsg)
zvmsdk.exception.SDKBaseException: z/VM SDK error: rollback attach because error:SMUT request failed. RequestData: 'cmdVM sample01 CMD 'sudo echo 0x0026000000000000 > /sys/bus/ccw/drivers/zfcp/0.0.1fc5/0x5005076801402797/unit_add'', Results: '{'rs': 1, 'errno': 0, 'strError': '', 'overallRC': 2, 'rc': 8, 'response': ['(Error) ULTVMU0316E On SAMPLE01, command sent through IUCV failed. cmd: sudo echo 0x0026000000000000 > /sys/bus/ccw/drivers/zfcp/0.0.1fc5/0x5005076801402797/unit_add, rc: 8, rs: 1, out: ERROR: ', 'Return code 8, Reason code 1.']}'
But if I execute attach again, the action will succeed.
Reason still not found, open a bug to track this.
I found the solution but still do not know the reason of this problem.
solution is call config.load_config before init SDKAPI, like this:
from zvmsdk import config
config.
from zvmsdk import api
sdkapi = api.SDKAPI()
sdkapi.
by doing this, the problem will not happen again.
I think this problem will disappear after I add REST API for volume.
Because load_config is called in wsgi now.