On Wed, May 13, 2009 at 09:11:35AM +0200, Marcel Michelmann wrote: > Hi *, > > I wrote a program in Java communicating with libvirt/XEN over SSH, with > libvirt-java-0.2.1. > I poll the CPU and RAM usage quite often (about 5 times a second). > My program runs well about between 5-8 minutes, but then I get > LibvirtException: socket closed unexpectedly. > Although I try to catch the LibvirtExceptions with special > System.out.println messages I have no idea where this is coming from. > > Now my question: what leads to this exception? > > exception caught: org.libvirt.LibvirtException: socket closed > unexpectedly > level:VIR_ERR_ERROR > code:VIR_ERR_RPC > domain:VIR_FROM_REMOTE > hasConn:false > hasDom:false > hasNet:false > message:socket closed unexpectedly Either the remote libvirtd crashed, or it explicitly dropped this client for misbehaving. I'm betting this is a libvirtd bug in event handling. Daniel -- |: Red Hat, Engineering, London -o- http://people.redhat.com/berrange/ :| |: http://libvirt.org -o- http://virt-manager.org -o- http://ovirt.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: GnuPG: 7D3B9505 -o- F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :|

On Wed, May 13, 2009 at 01:26:06PM +0200, Marcel Michelmann wrote: > So you mean the libvirtd on the server side (where XEN runs) doesn't > like > to get polled so often from the same process in such a short time? No, just that you triggered a bug on the remote side. What version of libvirt do you have running there, make sure you have a recent one. Daniel -- Daniel Veillard | libxml Gnome XML XSLT toolkit http://xmlsoft.org/ daniel(a)veillard.com | Rpmfind RPM search engine http://rpmfind.net/ http://veillard.com/ | virtualization library http://libvirt.org/