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."?