No one else is running into this problem? The issue seems to happen most when the systems are idle - out of a couple of hundred SL 6.4 libvirt/qemu guests we are seeing about one or two system crashes per 24 hours. It is fortunate that the problem seems to mostly affect servers when they are idle, I really do not relish the concept of this happening to a busy db server.
Over the last two months, since our last round of patching, we have > experienced several libvirt guests crashing with this in the qemu log: > > qemu-kvm: /builddir/build/BUILD/qemu-kvm-0.12.1.2/qemu-char.c:630: > io_watch_poll_finalize: Assertion `iwp->src == ((void *)0)' failed. > > This appears to be the same problem being experienced by a user who has > filed bugs against QEMU and CentOS: > > http://bugs.centos.org/view.php?id=6928 > https://bugs.launchpad.net/qemu/+bug/1268671 > > Our software versions are: > > libvirt-0.10.2-18.el6_4.14.x86_64 > qemu-kvm-0.12.1.2-2.415.el6.x86_64 > > We have not successfully determined what seems to prompt the crash. The > guests are running in different hardware and dedicated to different tasks > (DNS server, MySQL server, hosting a jboss application, etc). Out of a > population of a few hundred servers we seem to get about one crash a week, > apparently randomly. > > I can't find any evidence that the problem is being worked on - is anyone > else experiencing this issue since the last round of updates to 6.4, and if > so, have you discovered a workaround or solution? > > I appreciate any insight anyone can provide. > > Adrian >
