Re: [libvirt-users] e1000 network interface takes a long time to set the link ready
On Thu, May 10, 2018 at 11:53:23AM -0700, Ihar Hrachyshka wrote:
Hi,
In kubevirt, we discovered [1] that whenever e1000 is used for vNIC,
link on the interface becomes ready several seconds after 'ifup' is
executed, which for some buggy images like cirros may slow down boot
process for up to 1 minute [2]. If we switch from e1000 to virtio, the
link is brought up and ready almost immediately.
For the record, I am using the following versions:
- L0 kernel: 4.16.5-200.fc27.x86_64 #1 SMP
- libvirt: 3.7.0-4.fc27
- guest kernel: 4.4.0-28-generic #47-Ubuntu
Is there something specific about e1000 that makes it initialize the
link too slowly on libvirt or guest side?
Try the e1000e device instead perhaps.
If all other NIC models work, then this is likely to be a QEMU problem
and should be reported as a bug to them. I notice you're running Fedora 27
though, so before reporting bugs please try with latest upstream QEMU
releases (2.12) to see if that's better
[1] https://github.com/kubevirt/kubevirt/issues/936
[2] https://bugs.launchpad.net/cirros/+bug/1768955
Regards,
Daniel
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