Closing for QEMU since there hasn't been any response within a year.
** Changed in: qemu
Status: Incomplete => Won't Fix
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https://bugs.launchpad.net/bugs/1297487
Title:
MTU not
Did anybody ever tried to reproduce this bug with upstream QEMU?
** Changed in: qemu
Status: New => Incomplete
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Title:
MTU not honored
Seems to me that the issue is not that the MTU isn't being honoured, but
that the MTU should be checked *before* TSO assembly and not *after*.
Assembly should happen outside the VM if the VM has enabled it on the
interface internally, and clearly the incoming segments (not packets, at
this point)
Seems to me that the issue is not that the MTU isn't being honoured, but
that the MTU should be checked *before* TSO assembly and not *after*.
Assembly should happen outside the VM if the VM has enabled it on the
interface internally, and clearly the incoming segments (not packets, at
this point)
I believe this bug may be breaking Salt by breaking ZeroMQ in certain
virtualized environments. Additional information here:
https://github.com/saltstack/salt/issues/12248
** Also affects: salt
Importance: Undecided
Status: New
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I believe this bug may be breaking Salt by breaking ZeroMQ in certain
virtualized environments. Additional information here:
https://github.com/saltstack/salt/issues/12248
** Also affects: salt
Importance: Undecided
Status: New
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ii libselinux1 2.1.0-4.1ubuntu1
SELinux runtime shared libraries
ii linux-firmware 1.79.12
Firmware for Linux kernel drivers
ii linux-headers-3.2.0-60 3.2.0-60.91
ii libselinux1 2.1.0-4.1ubuntu1
SELinux runtime shared libraries
ii linux-firmware 1.79.12
Firmware for Linux kernel drivers
ii linux-headers-3.2.0-60 3.2.0-60.91
The bug description said this was a regression from 13.04 to 14.04, but
comment #9 says 12.04 is affected.
Pierre, could you show us your kernel and qemu versions?
dpkg -l | egrep (linux|qemu)
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The bug description said this was a regression from 13.04 to 14.04, but
comment #9 says 12.04 is affected.
Pierre, could you show us your kernel and qemu versions?
dpkg -l | egrep (linux|qemu)
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** Also affects: qemu
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1297487
Title:
MTU not honored in virtio vnet
To manage
** Also affects: qemu
Importance: Undecided
Status: New
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Title:
MTU not honored in virtio vnet
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Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: qemu-kvm (Ubuntu)
Status: New = Confirmed
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Also affected by this bug with Ubuntu 12.04LTS kvm.
A tracepath in a VM with virtio network card ends with: Resume: pmtu 65535.
While with pcnet or rtl8139 it properly ends with: Resume: pmtu 1500
This is pretty blocking given some servers are failing to communicate
because of the wrong MTU (I've
** Changed in: qemu-kvm (Ubuntu)
Importance: Medium = High
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Title:
MTU not honored in virtio vnet
To manage notifications
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: qemu-kvm (Ubuntu)
Status: New = Confirmed
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Title:
Also affected by this bug with Ubuntu 12.04LTS kvm.
A tracepath in a VM with virtio network card ends with: Resume: pmtu 65535.
While with pcnet or rtl8139 it properly ends with: Resume: pmtu 1500
This is pretty blocking given some servers are failing to communicate
because of the wrong MTU (I've
** Changed in: qemu-kvm (Ubuntu)
Importance: Medium = High
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Title:
MTU not honored in virtio vnet
To manage notifications about this bug go
Thanks for reporting this bug. I wonder if this may have been fixed
since 1.7 - Are you able to reproduce this with the qemu version in ppa
:ubuntu-virt/candidate? (That is the version which we hope will end up
in 14.04 before release)
** Changed in: qemu-kvm (Ubuntu)
Status: New =
I have updated to 1.7 but I still see the same issue.
kvm --version
QEMU emulator version 1.7.0 (Debian 1.7.0+dfsg-3ubuntu7), Copyright (c)
2003-2008 Fabrice Bellard
drivers appears to be the same though
ethtool -i eth1
driver: enic
version: 2.1.1.50
firmware-version: 2.1(3a)
bus-info:
** Changed in: qemu-kvm (Ubuntu)
Status: Incomplete = New
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Title:
MTU not honored in virtio vnet
To manage
Thanks, but that looks like the version currently in 14.04 archive.
Could you test with the 2.0~git-20140325.7b770c7-0ubuntu1 package which
is in ppa:ubuntu-virt/candidate?
** Changed in: qemu-kvm (Ubuntu)
Status: New = Incomplete
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I can see the following two installed, what am I missing?
sudo apt-cache policy qemu
qemu:
Installed: 2.0~git-20140325.7b770c7-0ubuntu1
Candidate: 2.0~git-20140325.7b770c7-0ubuntu1
Version table:
*** 2.0~git-20140325.7b770c7-0ubuntu1 0
500
Ok, sorry, in comment #4 you had said you were on 1.7. There are some
netdev commits between 1.7 and 2.0 so before marking this as affecting
upstream I wanted to make sure you'd tested git head (which you
effectively have).
** Changed in: qemu-kvm (Ubuntu)
Status: Incomplete = New
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Thanks for reporting this bug. I wonder if this may have been fixed
since 1.7 - Are you able to reproduce this with the qemu version in ppa
:ubuntu-virt/candidate? (That is the version which we hope will end up
in 14.04 before release)
** Changed in: qemu-kvm (Ubuntu)
Status: New =
I have updated to 1.7 but I still see the same issue.
kvm --version
QEMU emulator version 1.7.0 (Debian 1.7.0+dfsg-3ubuntu7), Copyright (c)
2003-2008 Fabrice Bellard
drivers appears to be the same though
ethtool -i eth1
driver: enic
version: 2.1.1.50
firmware-version: 2.1(3a)
bus-info:
** Changed in: qemu-kvm (Ubuntu)
Status: Incomplete = New
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Title:
MTU not honored in virtio vnet
To manage notifications about this bug
Thanks, but that looks like the version currently in 14.04 archive.
Could you test with the 2.0~git-20140325.7b770c7-0ubuntu1 package which
is in ppa:ubuntu-virt/candidate?
** Changed in: qemu-kvm (Ubuntu)
Status: New = Incomplete
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I can see the following two installed, what am I missing?
sudo apt-cache policy qemu
qemu:
Installed: 2.0~git-20140325.7b770c7-0ubuntu1
Candidate: 2.0~git-20140325.7b770c7-0ubuntu1
Version table:
*** 2.0~git-20140325.7b770c7-0ubuntu1 0
500
Ok, sorry, in comment #4 you had said you were on 1.7. There are some
netdev commits between 1.7 and 2.0 so before marking this as affecting
upstream I wanted to make sure you'd tested git head (which you
effectively have).
** Changed in: qemu-kvm (Ubuntu)
Status: Incomplete = New
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** Attachment added: PCAP TRACE when TSO is enabled
https://bugs.launchpad.net/ubuntu/+source/qemu-kvm/+bug/1297487/+attachment/4043447/+files/vnet1_tso_on.pcap
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** Attachment added: PCAP TRACE when TSO is NOT enabled
https://bugs.launchpad.net/ubuntu/+source/qemu-kvm/+bug/1297487/+attachment/4043448/+files/vnet1_tso_off.pcap
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** Attachment added: PCAP TRACE when TSO is enabled
https://bugs.launchpad.net/ubuntu/+source/qemu-kvm/+bug/1297487/+attachment/4043447/+files/vnet1_tso_on.pcap
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** Attachment added: PCAP TRACE when TSO is NOT enabled
https://bugs.launchpad.net/ubuntu/+source/qemu-kvm/+bug/1297487/+attachment/4043448/+files/vnet1_tso_off.pcap
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