Package: nbd-server
Version: 1:3.16.2-1
Severity: normal
Dear Maintainer,
I configured nbd-server in /etc/nbd-server/conf like so:
[generic]
# If you want to run everything as root rather than the nbd user, you
# may either say "root" in the two following lines, or remove them
# altogether. Do not remove the [generic] section, however.
user = nbd
group = nbd
includedir = /etc/nbd-server/conf.d
allowlist = true
# What follows are export definitions. You may create as much of them as
# you want, but the section header has to be unique.
[crypt-server-backup]
exportname = /dev/sda6
# authfile = /etc/nbd-server/allow-crypt-server-backup
flush = true
fua = true
I then connected with nbd-client from another machine (debian jessie)
like so:
$ sudo nbd-client -name crypt-server-backup shi /dev/nbd0
Negotiation: ..Error: Read failed: End of file
Exiting.
nbd-client could not connect, since (on server:)
$ sudo systemctl status nbd-server.service
● nbd-server.service - LSB: Network Block Device server
Loaded: loaded (/etc/init.d/nbd-server; generated; vendor preset: enabled)
Active: active (running) since Thu 2017-12-28 22:35:12 CET; 40s
ago
Docs: man:systemd-sysv-generator(8)
Process: 3515 ExecStart=/etc/init.d/nbd-server start
(code=exited, status=0/SUCCESS)
Tasks: 1 (limit: 4915)
CGroup: /system.slice/nbd-server.service
└─3525 /bin/nbd-server
Dez 28 22:35:12 shi nbd-server[3515]: nbd-server.
Dez 28 22:35:12 shi systemd[1]: Started LSB: Network Block
Device server.
Dez 28 22:35:49 shi nbd_server[3525]: Spawned a child process
Dez 28 22:35:49 shi nbd_server[4530]: virtstyle ipliteral
Dez 28 22:35:49 shi nbd_server[4530]: connect from
192.168.1.22, assigned file is /dev/sda6
Dez 28 22:35:49 shi nbd_server[4530]: No authorization file,
granting access.
Dez 28 22:35:49 shi nbd_server[4530]: Could not open exported
file /dev/sda6: Permission denied
Dez 28 22:35:49 shi nbd_server[4530]: Exiting.
Dez 28 22:35:49 shi nbd_server[4530]: Modern initial
negotiation failed
Dez 28 22:35:49 shi nbd_server[3525]: Child exited with 1)
While investigating this, I even did a
sudo addgroup nbd Diskussion
on the server and rebooted, but this did not help.
I expected the nbd-server to actually serve the device /dev/sda6
as network block device to the client. Actually it does if I do
not configure the nbd-server to run as user=nbd, group=nbd.
Thanks for developing and maintaining nbd.
Regards, Gregor
-- System Information:
Debian Release: buster/sid
APT prefers testing
APT policy: (500, 'testing')
Architecture: i386 (i686)
Kernel: Linux 4.14.0-2-686-pae (SMP w/2 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=de_DE.utf8 (charmap=UTF-8),
LANGUAGE=en_US:en (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
Versions of packages nbd-server depends on:
ii adduser 3.116
ii debconf [debconf-2.0] 1.5.65
ii libc6 2.25-5
ii libglib2.0-0 2.54.2-4
ii libgnutls30 3.5.16-1
ii ucf 3.0036
nbd-server recommends no packages.
nbd-server suggests no packages.
-- debconf information:
* nbd-server/number: 1
* nbd-server/port: 2000
nbd-server/convert: true
nbd-server/autogen:
* nbd-server/name: crypt-server-backup
* nbd-server/useports: true
* nbd-server/filename: /dev/sda6
