We will be happy enable nbd in the linux-kvm kernels. We'll post to this bug to indicate the kernel versions which will include the change.
Regarding your note that "there are many more modules in the generic kernel" -- indeed, the reduced size is one of the design features of the linux-kvm kernel. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-kvm in Ubuntu. https://bugs.launchpad.net/bugs/1793976 Title: kvm kernel missing nbd module Status in linux-kvm package in Ubuntu: In Progress Status in linux-kvm source package in Xenial: In Progress Status in linux-kvm source package in Bionic: In Progress Bug description: The "nbd" module is missing from linux-modules-XXX-kvm in bionic root@ubuntu:~# /sbin/modprobe nbd max_part=16 modprobe: FATAL: Module nbd not found in directory /lib/modules/4.15.0-1021-kvm root@ubuntu:~# uname -a Linux ubuntu 4.15.0-1021-kvm #21-Ubuntu SMP Tue Aug 28 09:57:01 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux root@ubuntu:~# dpkg-query -l | grep linux-modules ii linux-modules-4.15.0-1019-kvm 4.15.0-1019.19 amd64 Linux kernel extra modules for version 4.15.0 on 64 bit x86 SMP ii linux-modules-4.15.0-1021-kvm 4.15.0-1021.21 amd64 Linux kernel extra modules for version 4.15.0 on 64 bit x86 SMP ii linux-modules-4.15.0-34-generic 4.15.0-34.37 amd64 Linux kernel extra modules for version 4.15.0 on 64 bit x86 SMP ii linux-modules-extra-4.15.0-34-generic 4.15.0-34.37 amd64 Linux kernel extra modules for version 4.15.0 on 64 bit x86 SMP nbd exists for the generic kernel, but not kvm. root@ubuntu:~# find /lib/modules -name '*nbd*' /lib/modules/4.15.0-34-generic/kernel/drivers/block/nbd.ko root@ubuntu:~# dpkg-query -S /lib/modules/4.15.0-34-generic/kernel/drivers/block/nbd.ko linux-modules-4.15.0-34-generic: /lib/modules/4.15.0-34-generic/kernel/drivers/block/nbd.ko In fact, there are many more modules in the generic kernel: root@ubuntu:~# dpkg-query -L linux-modules-4.15.0-1021-kvm | wc -l 514 root@ubuntu:~# dpkg-query -L linux-modules-4.15.0-34-generic | wc -l 1285 I checked if there is a linux-modules-extra for kvm and this kernel version, but there is not - only for azure. root@ubuntu:~# apt-cache search linux-modules-extra-4.15.0-1021 linux-modules-extra-4.15.0-1021-azure - Linux kernel extra modules for version 4.15.0 on 64 bit x86 SMP root@ubuntu:~# There is a "linux-image-extra-virtual" package, but it's empty: root@ubuntu:~# dpkg-query -L linux-image-extra-virtual /. /usr /usr/share /usr/share/doc /usr/share/doc/linux-image-extra-virtual /usr/share/doc/linux-image-extra-virtual/copyright /usr/share/doc/linux-image-extra-virtual/changelog.gz As a workaround, I expect I can use the generic kernel - but this won't be optimised for kvm. ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: linux-modules-4.15.0-1021-kvm 4.15.0-1021.21 ProcVersionSignature: Ubuntu 4.15.0-1021.21-kvm 4.15.18 Uname: Linux 4.15.0-1021-kvm x86_64 ApportVersion: 2.20.9-0ubuntu7.3 Architecture: amd64 Date: Sun Sep 23 19:43:56 2018 Dependencies: InstallationDate: Installed on 2018-06-15 (100 days ago) InstallationMedia: Ubuntu-Server 18.04 LTS "Bionic Beaver" - Release amd64 (20180426) ProcEnviron: LANG=en_GB.UTF-8 TERM=xterm-256color SHELL=/bin/bash XDG_RUNTIME_DIR=<set> PATH=(custom, no user) SourcePackage: linux-kvm UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-kvm/+bug/1793976/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
