Hello, I face a problem on the nbdkit server:

Version-Release number of selected component (if applicable):

# qemu-img create disk 1G -f qcow2

# nbdkit file file=disk -e raw -v 

nbdkit: debug: TLS disabled: could not load TLS certificates
nbdkit: debug: registering plugin /usr/local/lib/nbdkit/plugins/nbdkit-file-plugin.so
nbdkit: debug: registered plugin /usr/local/lib/nbdkit/plugins/nbdkit-file-plugin.so (name file)
nbdkit: debug: file: load                         
nbdkit: debug: file: config key=file, value=/tmp/disk
nbdkit: debug: file: config_complete              
nbdkit: debug: bound to IP address <any>:10809 (2 socket(s))
nbdkit: debug: forked into background (new pid = 32524)

3. Try to read the file via nbd:

# qemu-img info nbd://localhost/raw                                                                                                                                    
qemu-img: Could not open 'nbd://localhost/raw': Could not read L1 table: Invalid argument

Logs from nbdkit:

nbdkit: debug: file: open readonly=0
nbdkit: file[1]: debug: newstyle negotiation: flags: global 0x3
nbdkit: file[1]: debug: newstyle negotiation: client flags: 0x3
nbdkit: file[1]: debug: newstyle negotiation: NBD_OPT_GO: client requested export 'raw' (ignored)
nbdkit: file[1]: debug: get_size
nbdkit: file[1]: debug: can_write
nbdkit: file[1]: debug: can_zero
nbdkit: file[1]: debug: can_write
nbdkit: file[1]: debug: can_trim
nbdkit: file[1]: debug: can_fua
nbdkit: file[1]: debug: can_flush
nbdkit: file[1]: debug: is_rotational
nbdkit: file[1]: debug: newstyle negotiation: flags: export 0x6d
nbdkit: file[1]: debug: newstyle negotiation: NBD_OPT_GO: ignoring NBD_INFO_* request 3
nbdkit: file[1]: debug: handshake complete, processing requests with 16 threads
nbdkit: debug: starting worker thread file.0
nbdkit: debug: starting worker thread file.1
nbdkit: debug: starting worker thread file.3
nbdkit: debug: starting worker thread file.2
nbdkit: debug: starting worker thread file.4
nbdkit: debug: starting worker thread file.5
nbdkit: debug: starting worker thread file.7
nbdkit: debug: starting worker thread file.6
nbdkit: debug: starting worker thread file.8
nbdkit: debug: starting worker thread file.9
nbdkit: debug: starting worker thread file.10
nbdkit: debug: starting worker thread file.11
nbdkit: debug: starting worker thread file.12
nbdkit: debug: starting worker thread file.13
nbdkit: debug: starting worker thread file.14
nbdkit: debug: starting worker thread file.15
nbdkit: file.1: debug: pread count=512 offset=0
nbdkit: file.0: debug: pread count=512 offset=0
nbdkit: file.3: debug: sending error reply: Invalid argument
nbdkit: file.4: debug: client sent disconnect command, closing connection
nbdkit: file.4: debug: exiting worker thread file.4
nbdkit: file.2: debug: exiting worker thread file.2
nbdkit: file.7: debug: exiting worker thread file.7
nbdkit: file.5: debug: exiting worker thread file.5
nbdkit: file.6: debug: exiting worker thread file.6
nbdkit: file.8: debug: exiting worker thread file.8
nbdkit: file.9: debug: exiting worker thread file.9
nbdkit: file.10: debug: exiting worker thread file.10
nbdkit: file.11: debug: exiting worker thread file.11
nbdkit: file.12: debug: exiting worker thread file.12
nbdkit: file.0: debug: exiting worker thread file.0
nbdkit: file.14: debug: exiting worker thread file.14
nbdkit: file.15: debug: exiting worker thread file.15
nbdkit: file.1: debug: exiting worker thread file.1
nbdkit: file.13: debug: exiting worker thread file.13
nbdkit: file.3: debug: exiting worker thread file.3
nbdkit: file[1]: debug: close

Could you please check if it is a bug from nbdkit? Thanks