On Wed, Sep 17, 2014 at 11:56:57PM +0400, Andrey Korolyov wrote: > I`ve faced an issue with qemu VMs with very large uptime spans - half > of year or so. They are hanging in running state forever and are not > killable in any imaginable fashion. Tried to freeze it via freezer cg > without any luck. VM itself went unresponsive with zero cpu > consumption after reaching 'forever running' point. > > I am going to reset the host in a couple of hours, so any timed ideas > for debugging this state will be very appreciated.
A couple of shots at figuring out what the process is doing: cat /proc/$PID/stack cat /proc/$PID/syscall gdb $PID (gdb) thread apply all bt
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