[Qemu-devel] [Bug 739092] [NEW] guest hangs when using network after live migration

[Yongjie Ren]

Public bug reported:

qemu-kvm commit: b73357ecd2b14c057134cb71d29447b5b988c516
( Author: Marcelo Tosatti <address@hidden> Date: Wed Mar 16 17:04:16 2011 -0300)
kvm commit: a72e315c509376bbd1e121219c3ad9f23973923f

Guest hangs when I run command "ssh"/"netstat" using network after live
migration. "ssh" or "netstat" hangs even if I press "Ctrl+C" to interrupt. And
I cannnot connect the guest using "ssh GustIP" from the host, though the sshd
is still running in the guest. 

Reproduce steps:
----------------
1.start a tcp daemon for migration:
  qemu-system-x86_64  -m 256 -smp 4  -incoming tcp:localhost:4444 -no-acpi -net
nic,macaddr=00:16:3e:63:d5:90,model=rtl8139 -net tap,script=/etc/kvm/qemu-ifup
-hda /root/lv.img
2.create a guest:
  qemu-system-x86_64  -m 256 -smp 4  -no-acpi -net
nic,macaddr=00:16:3e:63:d5:90,model=rtl8139 -net tap,script=/etc/kvm/qemu-ifup
-hda /root/lv.img
3.migration: 
  migrate tcp:localhost:4444
4.run command in guest:
  ssh address@hidden

** Affects: qemu
     Importance: Undecided
         Status: New

-- 
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/739092

Title:
  guest hangs when using network after live migration

Status in QEMU:
  New

Bug description:
  qemu-kvm commit: b73357ecd2b14c057134cb71d29447b5b988c516
  ( Author: Marcelo Tosatti <address@hidden> Date: Wed Mar 16 17:04:16 2011 
-0300)
  kvm commit: a72e315c509376bbd1e121219c3ad9f23973923f

  Guest hangs when I run command "ssh"/"netstat" using network after live
  migration. "ssh" or "netstat" hangs even if I press "Ctrl+C" to interrupt. And
  I cannnot connect the guest using "ssh GustIP" from the host, though the sshd
  is still running in the guest. 

  Reproduce steps:
  ----------------
  1.start a tcp daemon for migration:
    qemu-system-x86_64  -m 256 -smp 4  -incoming tcp:localhost:4444 -no-acpi 
-net
  nic,macaddr=00:16:3e:63:d5:90,model=rtl8139 -net tap,script=/etc/kvm/qemu-ifup
  -hda /root/lv.img
  2.create a guest:
    qemu-system-x86_64  -m 256 -smp 4  -no-acpi -net
  nic,macaddr=00:16:3e:63:d5:90,model=rtl8139 -net tap,script=/etc/kvm/qemu-ifup
  -hda /root/lv.img
  3.migration: 
    migrate tcp:localhost:4444
  4.run command in guest:
    ssh address@hidden