opensuse 11.2 guest hangs after live migration with clocksource=kvm-clock
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
QEMU |
Expired
|
Undecided
|
Unassigned |
Bug Description
i would like to debug a problem that I encountered some time ago with opensuse 11.2 and also
with Ubuntu (karmic/lucid).
If I run an opensuse guest 64-bit and do not touch the clocksource settings the guest almost
everytime hangs after live migration at:
(gdb) thread apply all bt
Thread 2 (Thread 0x7f846782a950 (LWP 27356)):
#0 0x00007f8467d24cd7 in ioctl () from /lib/libc.so.6
#1 0x000000000042b945 in kvm_run (env=0x2468170)
at /usr/src/
#2 0x000000000042cea2 in kvm_cpu_exec (env=0x2468170)
at /usr/src/
#3 0x000000000042d62c in kvm_main_loop_cpu (env=0x2468170)
at /usr/src/
#4 0x000000000042d76d in ap_main_loop (_env=0x2468170)
at /usr/src/
#5 0x00007f8468caa3ba in start_thread () from /lib/libpthread
#6 0x00007f8467d2cfcd in clone () from /lib/libc.so.6
#7 0x0000000000000000 in ?? ()
Thread 1 (Thread 0x7f84692d96f0 (LWP 27353)):
#0 0x00007f8467d25742 in select () from /lib/libc.so.6
#1 0x000000000040c25a in main_loop_wait (timeout=1000)
at /usr/src/
#2 0x000000000042dcf1 in kvm_main_loop ()
at /usr/src/
#3 0x000000000040c98c in main_loop () at /usr/src/
#4 0x000000000041054b in main (argc=31, argv=0x7fffa913
envp=
If I run the same guest with kernel parameter clocksource=
The hosts runs:
/kernel: /2.6.33.3, /bin: /qemu-kvm-0.12.4, /mod: /2.6.33.3
I invoke qemu-kvm with:
/usr/bin/
The Guest is:
OpenSuse 11.2 64-bit with Kernel 2.6.31.
The clocksource automatically choosen is kvm-clock.
Feedback appreciated. I have observed the same problem with 0.12.2 and also with old binaries provided by Ubuntu Karmic (kvm-88).
Update:
Problem still exists with lastest GIT. Ubuntu 9.10 and 10.04 64-bit guests are also affected.