Re: [Qemu-devel] VM Hung issue

2017-01-23 Thread Stefan Hajnoczi
On Thu, Jan 19, 2017 at 10:22:57PM +0500, Umar Draz wrote: > Yes the display is blank, and network also not responding, it means vm > somewhere hung. Try "gstack $PID_OF_QEMU" when the VM is hung. This will output a backtrace for all threads in QEMU. You might need to install the gdb package to

Re: [Qemu-devel] VM Hung issue

2017-01-19 Thread Umar Draz
Yes the display is blank, and network also not responding, it means vm somewhere hung. On Thu, Jan 19, 2017 at 9:26 PM, Stefan Hajnoczi wrote: > On Wed, Jan 18, 2017 at 10:46 AM, Umar Draz wrote: > > Well yes, whenever vm hung, then there is nothing on

Re: [Qemu-devel] VM Hung issue

2017-01-19 Thread Stefan Hajnoczi
On Wed, Jan 18, 2017 at 10:46 AM, Umar Draz wrote: > Well yes, whenever vm hung, then there is nothing on vnc display, and > network of that vm is also down. I can not ping the vm that time. Are you saying the VNC client connects successfully to a hung VM but the display is

Re: [Qemu-devel] VM Hung issue

2017-01-18 Thread Umar Draz
Hello Stefan, Well yes, whenever vm hung, then there is nothing on vnc display, and network of that vm is also down. I can not ping the vm that time. Mostly my Windows VMs are affected due to this and sometime same thing happen with Linux vm. On Wed, Jan 18, 2017 at 3:29 PM, Stefan Hajnoczi

Re: [Qemu-devel] VM Hung issue

2017-01-18 Thread Stefan Hajnoczi
On Wed, Jan 18, 2017 at 01:51:26PM +0500, Umar Draz wrote: > I am running qemu-kvm on CentOS 7.3, I have few vms of CentOS and Windows > 2012 servers. > > Randomly they are hung, but the status of virtual machine keep running, vnc > and network not responding. It's not clear whether the guest is

[Qemu-devel] VM Hung issue

2017-01-18 Thread Umar Draz
Hello, I am running qemu-kvm on CentOS 7.3, I have few vms of CentOS and Windows 2012 servers. Randomly they are hung, but the status of virtual machine keep running, vnc and network not responding. I have checked all /var/log/messages and /var/log/libvirt/qemu/vm.log but nothing found anything