*** This bug is a duplicate of bug 1346917 ***
https://bugs.launchpad.net/bugs/1346917
I'm using Ubuntu 14.04.1 and was using kernel 3.13 and after upgraded to
3.16, no more problems.
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I believe this is a duplicate of bug 1346917.
A test kernel has been built in comment #1 of that bug.
Please test with this, if it fixes your issue mark this bug as a duplicate of
1346917.
This fix will make it most likely into linux 3.13.0-33.
Thanks,
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*** This bug is a duplicate of bug 1346917 ***
https://bugs.launchpad.net/bugs/1346917
** This bug has been marked a duplicate of bug 1346917
Using KSM on NUMA capable machines can cause KVM guest performance and
stability issues
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Installing 3.14.1 as per comment #17 fixed these connectivity issues for
us as well, but it doesn't look like the 3.14.1 kernel made it anywhere
near the 14.04.1 release. There is also no mention of this or any
related bugs in
https://wiki.ubuntu.com/TrustyTahr/ReleaseNotes/ChangeSummary/14.04.1.
Hi Matt, should these packages be upgraded in host or in kvm vm?
Thanks
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https://bugs.launchpad.net/bugs/1325560
Title:
kvm virtio netdevs lose network connectivity
Sorry, see it. Should on host.
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https://bugs.launchpad.net/bugs/1325560
Title:
kvm virtio netdevs lose network connectivity under enough load
To manage
This kernel (3.14.1) solve trouble. Should expect fix in the official
repositories?
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https://bugs.launchpad.net/bugs/1325560
Title:
kvm virtio netdevs lose network
#17: This kernel is built in april. Fresh version is not available?
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https://bugs.launchpad.net/bugs/1325560
Title:
kvm virtio netdevs lose network connectivity
I've since upgraded to the 3.14.1 kernel that will be in ubuntu 14.04.01
which has fixed the problem for me.
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https://bugs.launchpad.net/bugs/1325560
Title:
kvm
#14: Upgraded host or virtual machine or both?
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Title:
kvm virtio netdevs lose network connectivity under enough load
To
#14: Vanilla kernel or from ubuntu git?
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Title:
kvm virtio netdevs lose network connectivity under enough load
To manage
Upgraded host kernel from mainline ppa.
https://wiki.ubuntu.com/Kernel/MainlineBuilds
[64-Bit hosts]
wget
http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.14.1-trusty/linux-headers-3.14.1-031401-generic_3.14.1-031401.201404141220_amd64.deb
Same trouble as in #10 comment. In addition periodically packet loss
1-5%. Used two virtual machines - if shutdown second maching - first
works more stable.
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Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: linux (Ubuntu)
Status: New = Confirmed
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I can also confirm this bug.
Periodical packets loss with virtio driver.
Ubuntu Server 14.04 LTS as guest and host.
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https://bugs.launchpad.net/bugs/1325560
Title:
I am seeing a similar issue but instead of the network breaking I get
very variable latency. It's like the VM is pausing.
This only happens with virtio networking. Switching to e1000 fixes the
issue.
Ubuntu 14.04 3.13.0-30-generic on both the host machines and VM's with
bridge networking.
64
** Summary changed:
- kvm vm loses network connectivity under enough load
+ kvm virtio netdevs lose network connectivity under enough load
** Changed in: linux (Ubuntu)
Importance: Undecided = High
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