Support for systemd-nspawn containers

[Yakulu]

It should be a good thing if needrestart can support systemd-nspawn containers. I use nspawn for thin / app containing and needrestart does not handle the fact that launched binary is under a specific tree and not under the root tree. So it always asks to restart services. For example :

[Core] Using UI 'NeedRestart::UI::stdio'...
[main] detected systemd
[Core] #881 is a NeedRestart::Interp::Perl
[Core] #1701 is a NeedRestart::Interp::Python
[Core] #1749 is a NeedRestart::Interp::Python
[Core] #1756 is a NeedRestart::Interp::Python
[Core] #2059 is a NeedRestart::Interp::Python
[Core] #2263 is a NeedRestart::Interp::Python
[main] #21148 uses non-existing /usr/lib/postgresql/9.5/bin/postgres
[main] #21148 is a child of #21147
[main] #21211 uses non-existing /usr/lib/postgresql/9.5/bin/postgres
[main] #21211 is a child of #21148
[main] #21212 uses non-existing /usr/lib/postgresql/9.5/bin/postgres
[main] #21212 is a child of #21148
[main] #21213 uses non-existing /usr/lib/postgresql/9.5/bin/postgres
[main] #21213 is a child of #21148
[main] #21214 uses non-existing /usr/lib/postgresql/9.5/bin/postgres
[main] #21214 is a child of #21148
[main] #21215 uses non-existing /usr/lib/postgresql/9.5/bin/postgres
[main] #21215 is a child of #21148
[main] #21147 exe => /usr/bin/systemd-nspawn
[main] #21147 is odoodev_pg95_nspawn.service
[main] #21148 exe => /usr/lib/postgresql/9.5/bin/postgres
[main] #21148 is odoodev_pg95_nspawn.service

Here postgres binary is located under /var/lib/container/name/usr/lib/postgresql/9.5/bin/postgres.

Thank you for the utility and thank you for reading ;)

[liske]

Hi,

I'm not familiar with systemd's nspawn feature. In general, needrestart should be able to handle process' filesystem namespace correctly. Which version of needrestart do you use? The namespace support was enhanced/fixed in 2.8.

HTH, Thomas

[Yakulu]

I used needrestart from debian jessie repository instead of backported one (so 1.2). I tried with 2.8 from bpo and it seems to handle nspawn gracefully. Sorry for the bad noise and thanks for your work !