this works for me

auto wlan0
allow-hotplug wlan0
iface wlan0 inet dhcp
wpa-ssid blah
wpa-psk blah
pre-up iptables -I INPUT -j ACCEPT

I'm running debian not raspbian, but there's not much different.

I don't know then. this isn't the problem, but will make it more bullet proof if your dhcp ip changes change iptables -t nat -A POSTROUTING -s 10.8.0.0/24 -o eth0 -j SNAT --to-source 10.254.22.184 to iptables -t nat -A POSTROUTING -s 10.8.0.0/24 -o eth0 -j MASQUERADE paste your full interfaces file ...

I think manual means the ifup command doesn't handle the interface,
so pre-up doesn't get run.

I don't know what brings the interface up though, you have a choice of finding out how the interface is brought up, and see if that has any hooks, or change the interface to dhcp and auto

I have a JMicron sata to usb converter connected to an odroid, and heavy writing kills mine.
I put it down to a firmware bug in the converter, in my case it doesn't reset itself automatically, I have
to pull the power out of the hard drive.

I'll try it on my pi and let you know how it goes.

I've uploaded my go at overlay root to github https://github.com/chesty/overlayroot It's handy for playing around with your pi, the real root on the sd card is read only, so any changes you make aren't permanent and will be lost the next time you reboot, crashes won't hurt the filesystem, or hard po...

weird, I started copying data to the stick and was getting errors, so swapped it out and now I see the new one inside initramfs.

I think I can close this question and open an X file

Hey, I'm playing around with overlay root filesystem mount, and got it working using tmpfs as the overlay, but I want to use a usb stick, and I can't work out how to make a usb stick available inside a initramfs during boot. During boot, inside the initramfs, there's no /dev/sda lsusb sees the stick...

very strange. I set hdmi_safe=1 still nothing on the display then I set config_hdmi_boost=4 and i didn't get a display every time, but I did get a display once, and it was a noisy screen with an picture of a raspberry and what looked like a kernel prompt, i think it had trouble finding or mounting /...

I dist-upgraded raspian a few days ago, it updated the kernel I think, lots of messages about files in /boot being diverted. After rebooting it didn't come back online. I've tried plugging a monitor in, but the monitor doesn't detect the pi is plugged into the hdmi port. This was untested before, it...