Il 27/06/2013 11:03, chandrashekar shastri ha scritto: > Hi Bonzini, > > Thanks, cpu hot-plug is working. > Could you please help me with cpu hot-unplug It is working.
It is not implemented yet. Paolo -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1195170 Title: cpu hot-add doesn't work with upstream qemu 1.5.50 Status in QEMU: Invalid Bug description: cpu hot-add doesn't work with upstream qemu 1.5.50. When we add the cpu [through QMP] it throws error as " {"error": {"class": "GenericError", "desc": "Unable to add CPU: 2, max allowed: 1"}} ", when we have booted the guest with two cpus. Host Kernel Version: 3.10.0-rc5+ Libvirt Version: 1.0.6 Qemu Version: 1.5.50 Guest Kernel : 2.6.32-358.6.1.el6.x86_64 Steps to Reproduce : Boot the guest with : qemu-system-x86_64 -drive file='/home/images/vm1.qcow2',format=qcow2,cache=none,boot=on -m 2048 -smp 2,cores=2,threads=1,sockets=1 -qmp tcp:localhost:4444,server -monitor stdio -enable-kvm Start the telnet localhost 4444 on another shell verify that there are two cpus : I verified through HMP (qemu) info cpus * CPU #0: pc=0x000000000000f081 thread_id=2034 CPU #1: pc=0x00000000000f6497 (halted) thread_id=2031 Hot add the CPU using the below command in QMP: { "execute": "cpu-add", "arguments": { "id": 2 } } {"error": {"class": "GenericError", "desc": "Unable to add CPU: 2, max allowed: 1"}} Notes: -------- 1. By default [without specifying the no of cpu], the guest boots up with 1 cpu, when we try to add one more cpu, below is the error: { "execute": "cpu-add", "arguments": { "id": 1 } } {"error": {"class": "GenericError", "desc": "Unable to add CPU: 1, max allowed: 0"}} 2. This issue is seen with or without enabling the KVM [i.e booting the guest without -enable-kvm option] To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1195170/+subscriptions
