@Eduardo, the Zesty kernel is now EOL, so this bug has been marked as
invalid.
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Title:
[Hyper-V] kvp daemon start failure on Zesty
This patch fixes the problem.
commit 7fa32e5ec28b1609abc0b797b58267f725fc3964
Author: K. Y. Srinivasan
Date: Tue Nov 14 06:53:33 2017 -0700
Drivers: hv: vmbus: Fix a rescind issue
The current rescind processing code will not correctly handle
the case where the host immediately
** Changed in: linux (Ubuntu)
Status: In Progress => Invalid
** Changed in: linux (Ubuntu Zesty)
Status: In Progress => Invalid
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We do not have a clear repro on this issue, but recently there have been
several fixes for rescind, so those might help.
Let's close this for the time being.
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It's been a while since this bug was updated. Does this bug still
exist, Chris?
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Title:
[Hyper-V] kvp daemon start failure on Zesty
The new test kernel based on 4.10.0-26 also has this behavior.
We also checked the latest upstream and we're not seeing the failure, so let me
discuss this internally to see why this fails on 4.10 but not on upstream.
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I built a test kernel with the patch on top of current 4.10.0-26. It can be
downloaded from:
http://kernel.ubuntu.com/~jsalisbury/lp1664663/
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Joe, I take that back - comment #16 is incorrect.
I'm seeing a call trace kvp related when using a high numbers of cores on the
VM on the test kernel provided.
We cannot repro that on 4.10.0-19 and nor in the latest one 4.10.0-26.
Can you please apply that patch on top of current 4.10.0-26 so we
Please merge the changes.
Sorry for the delay on this, we did some testing and we're not seeing any
issues in the test kernel.
We don't have a clear repro to exercise the bug behavior, but the changes do
not break the functionality.
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I built a Zesty test kernel with commit a3ade8cc4. It required commits
5c1bec61fdfcd, 37cdd991fac81 and 631e63a9f346c as prereqs.
The test kernel can be downloaded from:
http://kernel.ubuntu.com/~jsalisbury/lp1664663/
Can you test this kernel and see if it resolves this bug?
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** Changed in: linux (Ubuntu)
Status: Confirmed => In Progress
** Changed in: linux (Ubuntu Zesty)
Status: Confirmed => In Progress
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This fix is in linux-next now:
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/drivers/hv/hv_kvp.c?h=next-20170605&id=a3ade8cc474d848676278660e65f5af1e9e094d9
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
** Changed in: linux (Ubuntu Zesty)
** Changed in: linux (Ubuntu)
Status: In Progress => Incomplete
** Changed in: linux (Ubuntu Zesty)
Status: In Progress => Incomplete
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Long is working on a patch for submission upstream that should help with
this, and I will add it here when he does.
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Title:
[Hyper-V
I built a test kernel after changing KVP_SCRIPTS_PATH to /usr/sbin/hypervkvpd.
The test kernel can be downloaded from:
http://kernel.ubuntu.com/~jsalisbury/lp1664663
Can you give that kernel a try? If it resolves the issue, is that the
change you want to make instead of moving the scripts to
/u
Hi Chris,
Thanks for investigating. I've tried again to confirm the problem still
occurs -- and it does, although sometimes it takes multiple restarts of
the hv-kvp-daemon.service for it to start successfully.
Some diagnostic information is below.
Welcome to Ubuntu 16.04.2 LTS (GNU/Linux 4.4.0-6
Hi Stuart,
>From your comment #8, I took the 16.04.2 server ISO and did an install.
This uses kernel 4.4.0-62 and after installing the linux-tools/cloud-tools,
then I haven't ran into the initial issue.
Where you seeing the exact message from kvp that it didn't start?
Note that if the kernel is
** Changed in: linux (Ubuntu Zesty)
Assignee: (unassigned) => Joseph Salisbury (jsalisbury)
** Changed in: linux (Ubuntu Zesty)
Status: Triaged => In Progress
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ht
Hi Joe,
Using today's ISO - zesty-server-amd64.iso from March 8th, and doing a fresh
install, then installing linux-tools-generic and linux-cloud-tools-generic, I
see that the KVP daemon starts at the reboot without the previous issue.
The tools are running on top of kernel 4.10.0-9.
However, n
I have also seen this in 16.04.2, with the same symptoms as the OP.
Restarting the service (sudo systemctl restart hv-kvp-daemon.service)
seems to have fixed this problem across reboots.
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I built another 4.8.0-22 test kernel, but using a Yakkety tree. That
kernel can be downloaded from:
http://kernel.ubuntu.com/~jsalisbury/lp1664663/yakkety
Can you also give that kernel a try?
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The same error appears from KVP also on the test kernel
4.8.0-22_4.8.0-22.24~lp1664663.
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Title:
[Hyper-V] kvp daemon start failure o
** Changed in: linux (Ubuntu Zesty)
Status: Confirmed => Triaged
** Tags added: kernel-hyper-v
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Title:
[Hyper-V] kvp daemon
I built an early Zesty kernel and tools packages. The packages can be
downloaded from:
http://kernel.ubuntu.com/~jsalisbury/lp1664663/
Can you test out these packages? That will tell us if this is a
regression. If the bug still exists, we can try some earlier versions.
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It sounds like this is only happening on Zesty, so let me build an early
Zesty kernel version with it's associated linux-tools and cloud-tools
packages.
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Hi Joe,
The error comes from the kvp daemon, which is not part of the kernel itself.
Or along with the kernel-ppa are you also building linux-tools/cloud-tools?
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Can you see if this also happens with the latest mainline kernel:
http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.10-rc8
** Tags added: zesty
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** Changed in: linux (Ubuntu)
Importance: Undecided => High
** Tags added: kernel-da-key
** Also affects: linux (Ubuntu Zesty)
Importance: High
Status: Confirmed
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** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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Title:
[Hyper-V] kvp daemon start failure on Zesty
Status in
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