David Pfeffer's questions

I'm putting the following lines at the top (also tried the bottom) of my dhclient.conf file:

send host-name "hostname";
supersede domain-name "my-domain-name"
supersede domain-search "my-domain-name"
supersede search "my-domain-name"

Nevertheless, my /etc/resolv.conf file is as follows:

# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
#     DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
nameserver 123.123.123.123
nameserver 123.123.123.123
search dhcp-supplied-domain-name

I've changed the domain names and IP addresses to protect my systems.

How can I get this change to be reflected in my resolv.conf?

I'm trying to use ZFS (zfsforlinux stable) on Ubuntu 12.04 x86_64 Server. I enabled the PPA, and apt-get install ubuntu-zfs works successfully. However, no zfs module is created and the zpool and related commands all complain that they can't install the module.

Help!

For various reasons, I have two partitions that both have a label of root on an embedded system I'm developing.

The findfs command only finds the first device with the label. Is there a way I can find all devices with the label?

I'm setting up Ubuntu on an embedded machine that runs over a cellular connection, where we pay per byte. The machine also has no RTC battery, so it starts from a random time every boot.

I'd like to ensure that the time gets synced up when the cellular connection comes available so that log messages, etc have real times, but I also don't want to pay an arm and a leg for NTP traffic.

Can I customize the rate at which NTP updates the time? I'm using openntpd currently, but I'm not wedded to it.

The internet is not necessarily up at boot, so ntupdate and related at startup won't work. And scheduling via cron means waiting for the scheduled task to kick in, whereas I want a time daemon to get a time sync ASAP.

I'm going to be embedding Ubuntu on an embedded device. I'm using a combination of aufs and a read only root to ensure that my root fs doesn't get corrupt. However, I want to be able to store logs, so I'm making a special rw partition for /var/log. The device is going to undergo hundreds of power failure events.

In the event that the partition gets corrupted due to power failure, I want the system to work properly anyway. I'd like the partition to automatically get reformatted in case of corruption. Is there an easy way to configure this?