>> How can I reliable see what file systems are supposed to be mounted at boot?
I still use fstab for this.
>> Sure, it wasn't super consistent but you used the same tools as you always used to.
You can still use most of the same tools. I use tail,grep,awk like I used to, but I like the fact that with systemd I get a system configuration layer (which includes the init system) rather than having different tools in each distro.
Do you prefer the old init system because it is something you are used to (and do not want to change) or do you have specific instances where systemd is broken for you ?
>> it was great having a perfect call connection anywhere there is decent internet.
Thats the catch. The internet service has to be good enough for VoIP. Many times, having the right router is key.
>> I'd pick up the handset and the dial-tone was immediately there;
As long as the handset thinks its registered, dial tone will be immediate.
As far as the Ooma experience goes, if you can change the codecs for your device to use something like G722 rather than the normal PCMU/PCMA or GSM, call quality should be good. What handset did you get for your Ooma service ?
https://news.ycombinator.com/item?id=36799776 https://github.com/bartobri/no-more-secrets