Hi Thomas, nbd modules are shipped on all Ubuntu kernels, in the standard linux- modules package.
I started a fresh Impish VM and it was there, and loadable: $ find /usr/lib/modules -name nbd.ko /usr/lib/modules/5.13.0-35-generic/kernel/drivers/block/nbd.ko $ grep -Rin "nbd" /boot/config-5.13.0-35-generic 2563:CONFIG_BLK_DEV_NBD=m 2577:CONFIG_BLK_DEV_RNBD=y 2578:CONFIG_BLK_DEV_RNBD_CLIENT=m 2579:CONFIG_BLK_DEV_RNBD_SERVER=m $ sudo apt-file search nbd.ko | grep generic linux-modules-5.13.0-19-generic: /lib/modules/5.13.0-19-generic/kernel/drivers/block/nbd.ko linux-modules-5.13.0-20-generic: /lib/modules/5.13.0-20-generic/kernel/drivers/block/nbd.ko linux-modules-5.13.0-21-generic: /lib/modules/5.13.0-21-generic/kernel/drivers/block/nbd.ko linux-modules-5.13.0-22-generic: /lib/modules/5.13.0-22-generic/kernel/drivers/block/nbd.ko linux-modules-5.13.0-23-generic: /lib/modules/5.13.0-23-generic/kernel/drivers/block/nbd.ko linux-modules-5.13.0-25-generic: /lib/modules/5.13.0-25-generic/kernel/drivers/block/nbd.ko linux-modules-5.13.0-27-generic: /lib/modules/5.13.0-27-generic/kernel/drivers/block/nbd.ko linux-modules-5.13.0-28-generic: /lib/modules/5.13.0-28-generic/kernel/drivers/block/nbd.ko linux-modules-5.13.0-30-generic: /lib/modules/5.13.0-30-generic/kernel/drivers/block/nbd.ko linux-modules-5.13.0-35-generic: /lib/modules/5.13.0-35-generic/kernel/drivers/block/nbd.ko linux-modules-5.13.0-37-generic: /lib/modules/5.13.0-37-generic/kernel/drivers/block/nbd.ko linux-modules-5.13.0-39-generic: /lib/modules/5.13.0-39-generic/kernel/drivers/block/nbd.ko linux-modules-5.13.0-40-generic: /lib/modules/5.13.0-40-generic/kernel/drivers/block/nbd.ko $ sudo modprobe nbd $ lsmod | grep nbd nbd 53248 0 I then went on and mounted a qcow2 image to be sure, and it works fine. Could you please elaborate on what you are trying to do, and maybe I can help debug what isn't working? Thanks, Matthew ** Changed in: linux (Ubuntu) Status: Confirmed => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1970202 Title: linux-generic kernels are missing nbd modules To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1970202/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs