[libvirt] Issue with libvirtd

[Boris Fiuczynski]

On 01/10/2017 10:19 AM, Michal Privoznik wrote:
> On 01/10/2017 07:48 AM, Faysal Ali wrote:
>> Hi Michal,
>
> [It is usually good idea to keep the list CCed - it may help others
> finding a solution to their problems]
>
>>
>> Well I have created my little python/libivrt app to manage my virtual
>> machines. I am using python socket to check libivrt port availability, and
>> the error End of file while reading data: Input/output error* only happens
>> whenever that python socket script is trigger.
>>
>> Here is the script of python socket
>>
>> import libvirt, socket, sys
>>
>> hostname='kvm09'
>> port = 16509
>>
>> try:
>>       socket_host = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
>>       socket_host.settimeout(1)
>>       socket_host.connect((hostname, port))
>>       socket_host.close()
>>       print 'true'
>> except Exception as err:
>>       print err
>
> Ah, I haven't expected this. Of course your are seeing the error
> message. Libvirt has its own protocol on the top of TCP and since you
> are connecting and dying immediately - without sending any valid libvirt
> packet, the daemon logs an error. This is perfectly expected.
>
> Also, this is *not* how you connect to libvirt. You want to open a
> libvirt connection:
>
> conn = libvirt.open(uri)
> dom = conn.lookupByName(name)
> ...
>
> Michal

Michal,
my expectation is that virsh is using a libvirt connection.
Anyway I am getting the error whenever I use virsh start, virsh destroy 
or virsh shutdown on a domain, e.g.

Feb 06 14:01:30 s38lp24 virtlogd[42845]: 2017-02-06 13:01:30.675+0000: 
42845: error : virNetSocketReadWire:1800 : End of file while reading 
data: Input/output error
Feb 06 14:04:32 s38lp24 virtlogd[42845]: 2017-02-06 13:04:32.991+0000: 
42845: error : virNetSocketReadWire:1800 : End of file while reading 
data: Input/output error

Would that also be covered under "This is perfectly expected."?


-- 
Mit freundlichen Grüßen/Kind regards
    Boris Fiuczynski

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