Hi:    I am new to openstack installing on one VM. The environment includes Win10,virtualbox,Ubuntu 18.04; The version of  devstack and openstack  is  Train;  the VM  includes 2vCPU,4G ram, 60G disk .    The process was interrupted by cinder error.[internal server error]        The stack.log shows as stack.log; the c-api log shows as c-api log.

stack.log +[38;5;242mlib/cinder:create_volume_types:531 (B[m openstack --os-region-name=RegionOne volume type create --property volume_backend_name=lvmdriver-1 lvmdriver-1 2020-10-29 07:57:11.863 | Internal Server Error (HTTP 500) 2020-10-29 07:57:12.182 | +[38;5;242mlib/cinder:create_volume_types:1 (B[m exit_trap 2020-10-29 07:57:12.232 | +[38;5;242m./stack.sh:exit_trap:536 (B[m local r=1 2020-10-29 07:57:12.259 | ++[38;5;242m./stack.sh:exit_trap:537 (B[m jobs -p 2020-10-29 07:57:12.316 | +[38;5;242m./stack.sh:exit_trap:537 (B[m jobs= 2020-10-29 07:57:12.353 | +[38;5;242m./stack.sh:exit_trap:540 (B[m [[ -n '' ]] 2020-10-29 07:57:12.385 | +[38;5;242m./stack.sh:exit_trap:546 (B[m '[' -f /tmp/tmp.8Y7a6hpwLX ']' 2020-10-29 07:57:12.408 | +[38;5;242m./stack.sh:exit_trap:547 (B[m rm /tmp/tmp.8Y7a6hpwLX 2020-10-29 07:57:12.468 | +[38;5;242m./stack.sh:exit_trap:551 (B[m kill_spinner 2020-10-29 07:57:12.499 | +[38;5;242m./stack.sh:kill_spinner:446 (B[m '[' '!' -z '' ']' 2020-10-29 07:57:12.536 | +[38;5;242m./stack.sh:exit_trap:553 (B[m [[ 1 -ne 0 ]] 2020-10-29 07:57:12.581 | +[38;5;242m./stack.sh:exit_trap:554 (B[m echo 'Error on exit' 2020-10-29 07:57:12.581 | Error on exit 2020-10-29 07:57:12.615 | +[38;5;242m./stack.sh:exit_trap:556 (B[m type -p generate-subunit 2020-10-29 07:57:12.635 | +[38;5;242m./stack.sh:exit_trap:557 (B[m generate-subunit 1603957090 1142 fail 2020-10-29 07:57:14.084 | +[38;5;242m./stack.sh:exit_trap:559 (B[m [[ -z /opt/stack/logs ]] 2020-10-29 07:57:14.110 | +[38;5;242m./stack.sh:exit_trap:562 (B[m /opt/stack/devstack/tools/worlddump.py -d /opt/stack/logs 2020-10-29 07:57:17.223 | nova-compute: no process found 2020-10-29 07:57:17.264 | neutron-dhcp-agent: no process found 2020-10-29 07:57:17.338 | neutron-l3-agent: no process found 2020-10-29 07:57:17.409 | neutron-linuxbridge-agent: no process found 2020-10-29 07:57:17.471 | neutron-metadata-agent: no process found 2020-10-29 07:57:17.603 | +[38;5;242m./stack.sh:exit_trap:571 C-api logSTRICT_TRANS_TABLES,STRICT_ALL_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,TRADITIONAL,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION {{(pid=12249) _check_effective_sql_mode /usr/local/lib/python2.7/dist-packages/oslo_db/sqlalchemy/engines.py:307}} 10月 29 10:56:07 controller devstack@c-api.service[12246]: ERROR cinder.api.middleware.fault [req-7d67a008-3478-4da0-8b29-259571c1fb94 req-d823c701-e76a-489b-8ec9-fad9f9504c7b admin admin] Caught error: <class 'oslo_db.exception.DBConnectionError'&gt; (pymysql.err.OperationalError) (2013, 'Lost connection to MySQL server during query') 10月 29 10:56:07 controller devstack@c-api.service[12246]: (Background on this error at: http://sqlalche.me/e/e3q8): DBConnectionError: (pymysql.err.OperationalError) (2013, 'Lost connection to MySQL server during query') 10月 29 10:56:07 controller devstack@c-api.service[12246]: (Background on this error at: http://sqlalche.me/e/e3q8) 10月 29 10:56:07 controller devstack@c-api.service[12246]: ERROR cinder.api.middleware.fault Traceback (most recent call last): 10月 29 10:56:07 controller devstack@c-api.service[12246]: ERROR cinder.api.middleware.fault File "/opt/stack/cinder/cinder/api/middleware/fault.py", line 85, in __call__ 10月 29 10:56:07 controller devstack@c-api.service[12246]: ERROR cinder.api.middleware.fault return req.get_response(self.application)Thanks for your help,firtly.

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