Bug seems to have been addressed by kernel update per #17. Closing
** Changed in: linux (Ubuntu)
Status: Confirmed => Won't Fix
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k
Hi, problem seems to be solved (for me ). Problem was host could not
ping guest. At the same time guest were able to ping host and the world.
Downgraded qemu-kvm to previous version. That didn't help. Same problem
as before. Updated to the latest release. Still same problem. Removed
and recreated b
Hi, I have similar network connection issues (x)ubuntu xenial. Not sure
when this started but coming back from holiday I noticed that
connections to VM's lost from time to time. I do not have much load or
anything. I have 3 VM's ( two Ubuntu 14.04 and Ubuntu 16.04). Ping will
lose anywhere from 30%
Getting the same here on 17.04 host with 17.04 guest.
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Title:
kvm virtio netdevs lose network connectivity under "enough" load
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Thanks. I'll try to debug and log as much as possible, and open a new
bug report if needed.
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Title:
kvm virtio netdevs lose network connectivity
Hi Daniel,
given that the old issues were either fixed (in the linked kernel bug) and the
remaining ones unclear (incomplete here) it is hard to say. Given the reports
I've seen over the last years I'd say this particular issue is no more present.
Actually quite the opposite, if anything I've se
Hi, I'm experiencing similar issues in (x)ubuntu xenial. Is this bug
still present in 16.04?
Thanks
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Title:
kvm virtio netdevs lose network conn
bug #1346917 only mentions the same issue after updating to the kernel
of that specific bug; this issue (network problem) is completely
different from that one (same page sharing on NUMA).
** This bug is no longer a duplicate of bug 1346917
Using KSM on NUMA capable machines can cause KVM guest
*** 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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*** 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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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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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.
Sorry, see it. Should on host.
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Title:
kvm virtio netdevs lose network connectivity under "enough" load
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Hi Matt, should these packages be upgraded in host or in kvm vm?
Thanks
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Title:
kvm virtio netdevs lose network connectivity under "enough" load
This kernel (3.14.1) solve trouble. Should expect fix in the official
repositories?
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Title:
kvm virtio netdevs lose network connectivity under "e
#17: This kernel is built in april. Fresh version is not available?
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Title:
kvm virtio netdevs lose network connectivity under "enough" load
To
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
http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.14.1-
#14: Upgraded host or virtual machine or both?
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Title:
kvm virtio netdevs lose network connectivity under "enough" load
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#14: Vanilla kernel or from ubuntu git?
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Title:
kvm virtio netdevs lose network connectivity under "enough" load
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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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Title:
kvm virtio netdevs lose netw
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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Title:
kvm virtio netdevs l
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: linux (Ubuntu)
Status: New => Confirmed
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Title:
kvm
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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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 by
** 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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