** Also affects: linux-kvm (Ubuntu Bionic)
Importance: Undecided
Status: New
** Also affects: linux-kvm (Ubuntu Xenial)
Importance: Undecided
Status: New
** Changed in: linux-kvm (Ubuntu Xenial)
Status: New => Fix Committed
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https://bugs.launchpad.net/bugs/1766823
Title:
zram module not found in 4.4/4.15 KVM kernel
Status in ubuntu-kernel-tests:
In Progress
Status in linux-kvm package in Ubuntu:
In Progress
Status in linux-kvm source package in Xenial:
Fix Committed
Status in linux-kvm source package in Bionic:
New
Bug description:
== Justification ==
In the Xenial / Bionic KVM kernel, the CONFIG_ZRAM was not set, it's
impossible for users to use zram module on it. And the ubuntu_zram_smoke_test
regression test is failing due to the missing module.
== Test ==
Before enabling CONFIG_ZRAM and the related configs, the zram module cannot
be found.
After that, the zram module can be inserted and pass the
ubuntu_zram_smoke_test.
Test kernels could be found here:
http://people.canonical.com/~phlin/kernel/lp-1766823-zram/
== Fix ==
[bionic/linux-kvm][xenial/linux-kvm][SRU][PATCH] UBUNTU: [Config]: enable
CONFIG_ZRAM
== Regression Potential ==
Minimal.
No code changes, just a config changes without disabling any other configs.
------
The ubuntu_zram_smoke_test will fail due to the lack of the zram
module.
07:32:19 DEBUG| Running
'/home/ubuntu/autotest/client/tests/ubuntu_zram_smoke_test/ubuntu_zram_smoke_test.sh'
07:32:19 ERROR| [stderr] modprobe: FATAL: Module zram not found in directory
/lib/modules/4.15.0-1008-kvm
07:32:19 DEBUG| [stdout] FAILED: cannot load zram module
07:32:19 ERROR| Exception escaping from test:
There is no zram config in the Bionic KVM kernel config file.
$ grep -i zram debian.kvm/config/config.common.ubuntu
$
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: linux-image-4.15.0-1008-kvm 4.15.0-1008.8
ProcVersionSignature: User Name 4.15.0-1008.8-kvm 4.15.17
Uname: Linux 4.15.0-1008-kvm x86_64
NonfreeKernelModules: signpost
ApportVersion: 2.20.9-0ubuntu7
Architecture: amd64
Date: Wed Apr 25 07:32:47 2018
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=C.UTF-8
SHELL=/bin/bash
SourcePackage: linux-kvm
UpgradeStatus: No upgrade log present (probably fresh install)
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