nbdkit-smb-plugin
CIFS/SAMBA Plugin for nbdkit (Network Block Device Kit)
This nbdkit plugin facilitates using a CIFS/SAMBA share as a network block device (NBD). The block level device is represented as a collection of 1MiB super-block files that are placed into folders corresponding to the block addresses.
Note: nbdkit-smb-plugin assumes that there is no concurrent read/write access to the share. In other words, nbdkit-smb-plugin must have exclusive access to the SMB share.
Usage
# Install prerequisites
sudo dnf install nbdkit-devel libsmbclient-devel nbd
# Clone the repository
git clone https://github.com/astoeckel/nbdkit-smb-plugin
cd nbdkit-smb-plugin
# Build the code
mkdir build; cd build
meson ..
ninja
# Run the nbdkit server with the plugin
nbdkit --foreground ./libnbdkit_smb_plugin.so url=smb://user:password@host/Share/path/to/folder_representing_the_disk/
# Now, in a separate terminal...
# Connect /dev/nbd0 to the server
sudo modprobe nbd
sudo nbd-client 127.0.0.1 /dev/nbd0 -b 4096
# Create a partition
sudo fdisk /dev/nbd0
# Type g, n, w (confirm everything by pressing enter multiple times)
# Optional: setup encryption using cryptsetup/LUKS
# Create a filesystem
sudo mkfs.ext4 /dev/nbd0p1
# Mount the filesystme
mkdir test
sudo mount /dev/nbd0p1 test
# Use the disk on the SMB share as if it was a normal Linux filesystem
# Unmount the filesystem
sudo umount test
# Disconnect the nbd0 device
sudo nbd-client -d /dev/nbd0
# Stop the server by pressing CTRL+C