Hi list,

Ive found the reason for failing lvmdbusd: The install-script installs the python-module-dir "lvmdbusd" into /usr/lib/python3.6/site-packages. Unfortunatly this path is not in the standard-python(3)-modulepath included:

--------------- snip -------------------------

ver@w541:~/gits/lvm2$ python3 -m site
sys.path = [
    '/home/oliver/gits/lvm2',
    '/usr/lib/python36.zip',
    '/usr/lib/python3.6',
    '/usr/lib/python3.6/lib-dynload',
    '/usr/local/lib/python3.6/dist-packages',
    '/usr/lib/python3/dist-packages',
    '/usr/lib/python3.6/dist-packages',
]
USER_BASE: '/home/oliver/.local' (exists)
USER_SITE: '/home/oliver/.local/lib/python3.6/site-packages' (doesn't exist)
ENABLE_USER_SITE: True

--------------- snap -------------------------

It seems the "site-packages" dir is in Ubuntu a local one in the current home dir. Putting the moduledir "lvmdbusd" into /usr/lib/python3.6/dist-packages works fine. For me it is sufficient to change the installation-path to this dir.

I don't know, how the paths are organized in other distros like fedora or redhat, but maybe you find a way installing the lvm2-python3-parts for lvmdbusd in a way which works also out of the box for ubuntu, too.

Tfh!

Oliver

On 11.12.2017 02:53, Oliver Rath wrote:

Hi list,

Im playing around with the dbus-daemon, which shows me some strange behaviours:

lvmdbusd doesnt run with the message
# lvmdbusd
Traceback (most recent call last):
File "/sbin/lvmdbusd", line 13, in <module>
    from lvmdbusd import main
ModuleNotFoundError: No module named 'lvmdbusd'
*but* the module seems to be installed:
# find /usr/lib/ -iname "lvmdbusd"
/usr/lib/python3.6/site-packages/lvmdbusd
/usr/lib/python3.5/site-packages/lvmdbusd

Btw, lvmdbusd seems not to be installed for python2

lvmdbusd is a python-script, but the installer says "python is deprecated, use dbus instead". Can I use the dbus-interface (Im working on some examples in Rust for this) without the lvmdbusd?

Is lvm via dbus possibly out of date and not longer useable?

My system is ubuntu 17.10 with lvm2-git installed:

# lvdisplay --version
LVM version:     2.02.177(2)-git (2017-11-03)
Library version: 1.02.146-git (2017-11-03)
Driver version: 4.37.0
Configuration:   ./configure --enable-lvmetad --enable-lvmpolld --enable-dmfilemapd --enable-cmdlib --enable-applib --enable-dbus-service --enable-notify-dbus --enable-python2_bindings

TfH

Oliver
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