Hi, The hypervisor is RHEL6, and the guest OS is SUSE Enterprise Linux 11 SP1. One disk is passed to the guest OS via virtio interface as the system drive, and its name is /dev/vda. Today I found the guest OS hung. I couldn't do operation in VNC desktop. However, I could access the virtual serial console of the guest. In the console, most of commands couldn't be issued, and in the "mount" command I couldn't find the disk /dev/vda. But I found these messages: After the udevadm settle timeout, the events queue contains: 527: /devices/virtio-pci/virtio2 528: /devices/virtio-pci/virtio3 Trying manual resume from /dev/vda1 After the udevadm settle timeout, the events queue contains: 527: /devices/virtio-pci/virtio2 528: /devices/virtio-pci/virtio3 resume device /dev/vda1 not found (ignoring) Trying manual resume from /dev/vda1 After the udevadm settle timeout, the events queue contains: 527: /devices/virtio-pci/virtio2 528: /devices/virtio-pci/virtio3 resume device /dev/vda1 not found (ignoring) Waiting for device /dev/vda2 to appear: ..............................Could not find /dev/vda2. Want me to fall back to /dev/vda2? (Y/n) Waiting for device /dev/vda2 to appear: ..............................not found It seemed that the guest OS couldn't access /dev/vda, then the problem occurred. But in the hypervisor, I couldn't find anything abnormal for the disk. I could use this disk normally. After restarting the guest OS, everything is OK. Is this problem related to the guest OS itself, or is there a bug in QEMU? Have you ever met this problem that some drives in the guest OS were lost unexpectedly? Thanks, Paul -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
