| 2019-11-05 17:23:41 |
Dr. Uwe Meyer-Gruhl |
description |
There are two essential kernel modules that are missing from some linux kernel packages under Ubuntu Server 18.04 LTS:
nfsv4.ko and aes-x86_64.ko (matter-of-fact any crypto module)
I found them both missing in linux-kvm and nfsv4.ko missing in linux-generic - both are present in linux-generic-hwe-18.04.
The use cases for these are not far-fetched:
In an Ubuntu KVM guest, I often need virtual disks that I can encrypt via LUKS in order to protect them (somewhat). Obviously, this is not possible without the crypto modules, which are not present in the KVM-specialised kernel package 'linux-kvm'.
On the other hand, when I want to mount NFS storage, I cannot use NFSv4, which is the preferred way of doing it when you need firewalling. Why this fails is not at all obvious, since the use-level "mount.nfs4" is present, but only gives cryptic messages, not showing that a kernel module is missing.
And even with the default kernel (linux-generic), which has some more modules, NFSv4 client support is missing.
Do I really have to use linux-generic-hwe-18.04 for that? It seems a bit much. |
There are two essential kernel modules that are missing from some linux kernel packages under Ubuntu Server 18.04 LTS:
nfsv4.ko and aes-x86_64.ko (matter-of-fact any crypto module)
I found them both missing in linux-kvm and nfsv4.ko missing in linux-generic - both are present in linux-generic-hwe-18.04.
The use cases for these are not far-fetched:
In an Ubuntu KVM guest, I often need virtual disks that I can encrypt via LUKS in order to protect them (somewhat). Obviously, this is not possible without the crypto modules, which are not present in the KVM-specialised kernel package 'linux-kvm'.
On the other hand, when I want to mount NFS storage, I cannot use NFSv4, which is the preferred way of doing it when you need firewalling. Why this fails is not at all obvious, since the use-level "mount.nfs4" is present, but only gives cryptic messages, not showing that a kernel module is missing.
And even with the default kernel (linux-generic), which has some more modules, NFSv4 client support is missing.
Do I really have to use linux-generic-hwe-18.04 for that? It seems a bit much.
---
ProblemType: Bug
AlsaDevices: Error: command ['ls', '-l', '/dev/snd/'] failed with exit code 2: ls: cannot access '/dev/snd/': No such file or directory
AplayDevices: Error: [Errno 2] No such file or directory: 'aplay': 'aplay'
ApportVersion: 2.20.9-0ubuntu7.9
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord': 'arecord'
CRDA: N/A
DistroRelease: Ubuntu 18.04
HibernationDevice: RESUME=/dev/mapper/unifi--vg-swap_1
InstallationDate: Installed on 2017-02-11 (996 days ago)
InstallationMedia: Ubuntu-Server 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig': 'iwconfig'
Lsusb: Error: command ['lsusb'] failed with exit code 1:
MachineType: QEMU Standard PC (i440FX + PIIX, 1996)
Package: linux (not installed)
ProcFB: Error: [Errno 2] No such file or directory: '/proc/fb'
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.15.0-1048-kvm root=/dev/mapper/hostname--vg-root ro net.ifnames=0 biosdevname=0
ProcVersionSignature: Ubuntu 4.15.0-1048.48-kvm 4.15.18
RelatedPackageVersions:
linux-restricted-modules-4.15.0-1048-kvm N/A
linux-backports-modules-4.15.0-1048-kvm N/A
linux-firmware 1.173.9
RfKill: Error: [Errno 2] No such file or directory: 'rfkill': 'rfkill'
Tags: bionic
Uname: Linux 4.15.0-1048-kvm x86_64
UnreportableReason: This report is about a package that is not installed.
UpgradeStatus: Upgraded to bionic on 2019-06-22 (136 days ago)
UserGroups:
_MarkForUpload: False
dmi.bios.date: 04/01/2014
dmi.bios.vendor: SeaBIOS
dmi.bios.version: 1.10.2-1ubuntu1
dmi.chassis.type: 1
dmi.chassis.vendor: QEMU
dmi.chassis.version: pc-i440fx-xenial
dmi.modalias: dmi:bvnSeaBIOS:bvr1.10.2-1ubuntu1:bd04/01/2014:svnQEMU:pnStandardPC(i440FX+PIIX,1996):pvrpc-i440fx-xenial:cvnQEMU:ct1:cvrpc-i440fx-xenial:
dmi.product.name: Standard PC (i440FX + PIIX, 1996)
dmi.product.version: pc-i440fx-xenial
dmi.sys.vendor: QEMU |
|
