[Bug 42829] KVM Guest with virtio network driver loses network connectivity

[bugzilla-daemon@bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=42829


Steve <stefan.bosak@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|REOPENED                    |RESOLVED
         Resolution|                            |CODE_FIX




--- Comment #16 from Steve <stefan.bosak@gmail.com>  2012-03-07 12:40:15 ---
Thank you for information.

Today I test v3.3-rc6+ from today morning: the same version on host and guest
also latest seabios, qemu-kvm, net-tools, util-linux, kmod, udev.
Now it works correctly after few hours under huge network traffic load
both directions in paralell without any network issue.

Bellow are my arguments for tested guest running on testing host:
-----------------------------------------------------------------
${VPS}
-nodefaults
-name ${VPS_NAME}
-chroot ${VPS_CHROOT}
-runas ${VPS_USER}
-pidfile ${VPS_PIDFILE}
-vnc ${VPS_WAN}:0
-vga std --full-screen
-smp ${VPS_CPU} -m ${VPS_MEM} -cpu host
-mem-path /hugepages -mem-prealloc
-enable-kvm -daemonize -rtc base=localtime,clock=host,driftfix=none
-balloon ${VPS_BALLOON}
-netdev tap,id=nic01,ifname=${VPS_NET_IF_NAME},
  script=/etc/kvm/kvm-ifup,downscript=/etc/kvm/kvm/ifdown,
  vnet_hdr=on,vhost=on,vhostforce=off
-device virtio-net-pci,netdev=nic01,mac=${VPS_MAC}
-drive aio=native,index=0,media=disk,cache=none,
  if=${VPS_DRIVE_IF_TYPE},file=${VPS_IMG}
-boot order=c,menu=off &

lsmod on guest (lsmod | grep virtio):
virtio_net             12477  0
virtio_balloon          4216  0
virtio_blk              6313  3
virtio_pci              6983  0
virtio                  3282  4 virtio_pci,virtio_blk,virtio_balloon,virtio_net
virtio_ring             4154  4 virtio_pci,virtio_blk,virtio_balloon,virtio_net

lspci on guest (lspci):
00:00.0 Host bridge: Intel Corporation 440FX - 82441FX PMC [Natoma] (rev 02)
00:01.0 ISA bridge: Intel Corporation 82371SB PIIX3 ISA [Natoma/Triton II]
00:01.1 IDE interface: Intel Corporation 82371SB PIIX3 IDE [Natoma/Triton II]
00:01.3 Bridge: Intel Corporation 82371AB/EB/MB PIIX4 ACPI (rev 03)
00:02.0 VGA compatible controller: Device 1234:1111
00:03.0 RAM memory: Red Hat, Inc Virtio memory balloon
00:04.0 Ethernet controller: Red Hat, Inc Virtio network device
00:05.0 SCSI storage controller: Red Hat, Inc Virtio block device

I try to test older guest kernels with above setup.

Thank you for your time & cooperation.

Have a nice day.

-- 
Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are watching the assignee of the bug.