danba's questions

I have a manjaro linux server with at least two network interface controllers (NICs) and would like to route all traffic going to certain IP address ranges or subnets over one, and everything else over one of the others.

So far I've configured the networks via nmcli, but I only have a tenuous grasp of the subject.

Ideally the solution would work via the command line, be persistent and not depend strongly on the distribution used.

Edit: As per Route IP Traffic using nmcli / Centos 7 something along the lines of

nmcli connection modify "Wired connection 1" +ipv4.routes "10.0.0.0/16"

should work, however the packages don't seem to be routed across the correct network.

My State:

$: lvs
LV        VG    Attr       LSize   Pool Origin Data%  Meta%  Move Log Cpy%Sync Convert
home      myvg -wi-ao---- 100.00g 

$: btrfs filesystem resize -20g /home
$: lvreduce -L-20G /dev/myvg/home
WARNING: Reducing active and open logical volume to 80.00 GiB.
THIS MAY DESTROY YOUR DATA (filesystem etc.)
Do you really want to reduce m2ssd/home? [y/n]:

Questions:

• Will this break my filesystem
• If it wouldn't break my filesystem, howcome not?
• Does lvreduce / lvresize know to move the filesystem or the filesystem know in which direction to shrink?
• Where could I find relevant documentation?
• Would other filesystems work better with lvm for live resizing

What form would the configuration of <the database with non-UNIX accounts> take?

# in /etc/postfix/main.cf
local_recipient_maps = proxy:unix:passwd.byname, $alias_maps,
    <the database with non-UNIX accounts>

The documentation page http://www.postfix.org/LOCAL_RECIPIENT_README.html seems incomplete in that sense.

An example would be awesome.