Re: [Qemu-devel] Monitor socket will close after parse command error. Qemu-2.6.2

[Sam]

address@hidden tests]$ telnet 127.0.0.1 55919
Trying 127.0.0.1...
Connected to 127.0.0.1.
Escape character is '^]'.
QEMU 2.6.2 monitor - type 'help' for more information
(qemu) chardev-add
socket,id=char-test_intf1,path=/usr/local/var/run/openvswitch/test_intf1,server=on
chardev-add
socket,id=char-test_intf1,path=/usr/local/var/run/openvswitch/test_intf1,server=on
(qemu)
(qemu) netdev_add
vhost-user,id=test_intf1,chardev=char-test_intf1,vhostforce=on
netdev_add vhost-user,id=test_intf1,chardev=char-test_intf1,vhostforce=on
(qemu)
(qemu) device_add
virtio-net-pci,netdev=test_intf1,mac=00:22:79:29:d2:6c,id=netdev-test_intf1
device_add
virtio-net-pci,netdev=test_intf1,mac=00:22:79:29:d2:6c,id=netdev-test_intf1
(qemu)
(qemu) device_del netdev-test_intf1
device_del netdev-test_intf1
(qemu)
(qemu) netdev_del test_intf1
netdev_del test_intf1
(qemu)
(qemu) chardev-remove char-test_intf1
chardev-remove char-test_intf1
Chardev 'char-test_intf1' is busy
(qemu)
(qemu) chardev-remove char-test_intf1
chardev-remove char-test_intf1
Chardev 'char-test_intf1' is busy
(qemu)
(qemu) chardev-remove char-test_intf1
chardev-remove char-test_intf1
Chardev 'char-test_intf1' is busy
(qemu)
(qemu) chardev-add
socket,id=char-test_intf1,path=/usr/local/var/run/openvswitch/test_intf1,server=on
chardev-add
socket,id=char-test_intf1,path=/usr/local/var/run/openvswitch/test_intf1,server=on
Duplicate ID 'char-test_intf1' for chardev
Parsing chardev args failed
(qemu)
(qemu) ^[[A^[[A
chardev-remove char-test_intf1
Chardev 'char-test_intf1' is busy
(qemu)
(qemu)

(qemu)
(qemu)

(qemu)
(qemu) netdev_add
vhost-user,id=test_intf1,chardev=char-test_intf1,vhostforce=on
netdev_add vhost-user,id=test_intf1,chardev=char-test_intf1,vhostforce=on
Connection closed by foreign host.

2017-09-08 11:32 GMT+08:00 Sam <address@hidden>:

> BTW, same result while using `telnet 127.0.0.1 55919`, which means also
> have the two problem in the email before.
>
> 2017-09-08 11:23 GMT+08:00 Sam <address@hidden>:
>
>> Hi all,
>>
>> I'm using HMP socket to send command to add netdev, my command like this:
>>
>> address@hidden tests]$ sudo  python monitor.py 55919
>>> (qemu):
>>>  Connected to qemu monitor ...
>>> on_monitor_open
>>> ds
>>> (qemu):
>>> {'return': ["unknown command: 'ds'"]}
>>> chardev-add socket,id=char-test_intf1,path=/usr/local/var/run/openvswitc
>>> h/test_intf1,server=on
>>> (qemu):
>>> \{'return': []}
>>> netdev_add vhost-user,id=test_intf1,chardev=char-test_intf1,vhostforce=
>>> on
>>> (qemu):
>>> {'return': ["unknown command: '\\netdev_add'"]}
>>> netdev_add vhost-user,id=test_intf1,chardev=char-test_intf1,vhostforce=
>>> on
>>> (qemu):
>>> {'return': []}
>>> device_add virtio-net-pci,netdev=test_intf1,mac=00:22:79:29:d2:6c,id=
>>> netdev-test_intf1
>>> (qemu):
>>> {'return': []}
>>> device_del netdev-test_intf1
>>> (qemu):
>>> {'return': []}
>>> netdev_del test_intf1
>>> (qemu):
>>> {'return': []}
>>> chardev-remove char-test_intf1
>>> (qemu):
>>> {'return': ["Chardev 'char-test_intf1' is busy"]}
>>> chardev-remove char-test_intf1
>>> (qemu):
>>> {'return': ["Chardev 'char-test_intf1' is busy"]}
>>> ds
>>> (qemu):
>>> {'return': ["unknown command: 'ds'"]}
>>> chardev-add socket,id=char-test_intf1,path=/usr/local/var/run/openvswitc
>>> h/test_intf1,server=on
>>> (qemu):
>>> {'return': ["Duplicate ID 'char-test_intf1' for chardev", 'Parsing
>>> chardev args failed']}
>>> netdev_add vhost-user,id=test_intf1,chardev=char-test_intf1,vhostforce=
>>> on
>>> (qemu):
>>> on_monitor_close
>>> Disconnect ...
>>> Bye...
>>> address@hidden tests]$ telnet 127.0.0.1 55919
>>> Trying 127.0.0.1...
>>> telnet: connect to address 127.0.0.1: Connection refused
>>
>>
>> the monitor.py is same like telnet, which send command to 127.0.0.1:55919
>> socket.
>> At the last 5th line, you could see "on_monitor_close", this is because
>> server side of 127.0.0.1:55919 socket is down.
>>
>> I have few questions:
>> 1. Why I got "{'return': ["Chardev 'char-test_intf1' is busy"]}" while
>> using "chardev-remove char-test_intf1"?
>> 2. Why the server side will close while get "{'return': ["Duplicate ID
>> 'char-test_intf1' for chardev", 'Parsing chardev args failed']}" and then
>> send same command?
>>
>> Thank you~
>>
>
>