Ubuntu
linux package

  1. Bug #579276
  2. Comment #27

Comment 27 for bug 579276

Revision history for this message
Sergey Svishchev (svs) wrote :

To summarize:

* This is a "RX lockup" condition -- VM still runs, can send traffic (ARP requests, mostly), but cannot receive replies.

* On Lucid, two backports to 2.6.32 are needed, "virtio_net: Make delayed refill more reliable" and "Add limit for socket backlog". I didn't research which mainline versions include them. Debian bugs #576838 and #592187 discuss each of these backports.

* On Karmic, another backport is needed [1]; not to kernel, but to QEMU: ("Fix a race condition where qemu finds that there are not enough virtio ring buffers available and the guest make more buffers available before qemu can enable notifications")

[1] http://forum.proxmox.com/threads/3117-virtio-net-crashing-(stop-sending-traffic)?p=20247#post20247