kernel-packages team mailing list archive
Mailing list archive
[Bug 1584597] Re: Hyper-V Memory Ballooning re-broken in 16.04
I have verified that 4.4.0-22 does not balloon memory back to Hyper-V
and 4.4.0-21 does. We are investigating, but there doesn't seem to be a
lot of Hyper-V changes that relate to memory between these two kernels.
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
Hyper-V Memory Ballooning re-broken in 16.04
Status in linux package in Ubuntu:
Status in linux source package in Xenial:
Regression: #1294283 fixed memory ballooning in Hyper-V in 14.04, but
the bug has returned in 16.04.
Steps to reproduce:
1. Create Gen2 Hyper-V VM
2. Install Ubuntu 16.04
3. modprobe hv_balloon
Memory usage according to Hyper-V Manager will not change
This has been reproduced on 2 fresh Ubuntu Server 16.04 instances.
I installed linux-generic-xenial on a 14.04 instance, rebooted,
modprobe'd hv_balloon and memory usage in Hyper-V Manager reduced to
the correct level.
Host: Windows NanoServer 2016
Ubuntu Server 16.04 version_signature: `Ubuntu 4.4.0-21.37-generic 4.4.6`
Ubuntu Server 14.04 version_signature: `Ubuntu 4.4.0-22.40~14.04.1-generic 4.4.8`
To manage notifications about this bug go to: