Raspberry Pi Forums

MattF

2 things to check: 1: make sure the forwarding chain in iptables has a default permit policy. 2: how do the packets get _back_? If the host you are tryouts no to reach doesn't know to send the return traffic back via the Pi, it will use its default route and either black hole the traffic or drop it ...

MattF

That's a slightly strange choice of subnet for the 2nd NIC. Where are you trying to SSH in from, and what does its routing table look like?

The pi configuration itself seems OK.

You must might want to check RFC1918, and perhaps use something like 10.10.20.0/24 for the 2nd NIC as a subnet.

MattF

Chances are there just isn't enough power on the USB port directly on the Pi to reliably drive a 3G dongle.
I've always used powered hubs.

Not sure if there is a current difference between the A and B, but my guess is you are on the cusp of it working at all when directly connected.

MattF

I've been stressing this for a day now with airodump-ng in a pretty busy wifi environment and very few complaints in dmesg.

Looking very solid.

MattF

I've hand applied this to my 3.13 aufs tree and it looks very promising after short testing.
May have cured the hci0 TX timeouts that I occasionally see at USB2 speeds.

MattF

A couple of things to think about) 1: /proc is a special file system, but under certain circumstances it can be uncounted. Or mounted somewhere else and a hand crafted /proc/cpuinfo created. 2: you might be in a chroot jail, in which case all bets are off. In the absence of a hardware capability lik...

MattF

I've disabled dphys-swapfile for a long time now. As the aim of the game (well this particular game) is to minimise SD card writes it made no sense to have this enabled. I've updated my kernel to 3.13.1 you can get it from: https://dl.dropboxusercontent.com/u/151327099/3.13.1.tar.bz2 Download it to ...

MattF

Hi, I'm assuming you've downloaded the image I linked from Dropbox and dd'd it to an SD card (with a block size of 1M). That at least should boot. You need to use something like your Ubuntu system to do that (not on the Pi) If you then subsequently update the card, care needs to be taken as /boot is...

MattF

http://www.digifail.com/software/bluelog.shtml

Compiles easily.

It could be wrapped in a simple looping script to parse it's output.

MattF

You can get my home rolled 3.12 based F2FS approach (not heavily tested but seems fairly robust). See: http://www.raspberrypi.org/phpBB3/viewt ... 29&t=63553

MattF

So far F2FS has been stable for me

See http://www.raspberrypi.org/phpBB3/viewt ... 29&t=63553

MattF

su pi -c startx
Rather than
startx

Should get you the desired behaviour

You might also want to take a look at rungetty

MattF

I suppose I should have mentioned that you can use a tmpfs RWFS overlay which gives you an RO SDcard which resets to the default on every boot, but also gives you what appears to be a fully RW file system with minimal risk of SD corruption. If you do go this route use ext4 for tmpfs, not f2fs.

MattF

OK, I have taken vanilla Raspian and apt-get safe-upgraded'd it. (Java is removed due to some space constraints) Firmware is at the latest version, and the kernel is my build of 3.12.4 with AUFS support. F2FS root filesystem. As it comes it will mount the rootfs directly with no AUFS overlay. You ca...

MattF

You are welcome

Updated initramfs with the current version of F2FS tools can be found at:
https://dl.dropboxusercontent.com/u/151 ... Dec17.cpio

No other changes from the previous version other than if you use f2fs you may find that fsck actually does something ....

MattF

Hi,

I think you need the usb gadget API. Quite possibly the serial version.

It is covered in gagdet_serial.txt in the kernel documentation.

How well it is implemented on dwc_otg I do not know.

MF

MattF

I've been playing a bit more with F2FS with an F2FS overlay. It's seeming fairly resilient and performant. Using 1.2 of f2fs tools fsck seems to at least pretend to repair problems on sudden loss of power. My own image is fairly heavily customised to do a very specific headless loginless task so is ...

MattF

Well NILFS has been mainstream for some time. That would be my starting point. Given the nature of SD cards I'd be cautious about introducing the amount of additional writes such a thing would (in my simple brain) entail. Perhaps an aufs/unionfs/... approach would be better? Depends on requirement o...

MattF

Make sure that the leases database directory specified in the configuration file actually exists.

MattF

Long shot, but just in case you are sending AT+V1E1 as part of the init string? Also check if there is a ttyUSB1 sometimes one gets rather more serial ports than anticipated and different results on different ports (data/control on 0, control only on 1) Check usb_modeswitch is fully up to date as we...

MattF

OpenVPN works well as a VPN client on the Pi (assuming you have an OpenVPN server for the other end). Just use the default route option to send all traffic from the Pi (and thus all masquerading Wi-Fi clients) down the VPN

MattF

OK, I've uploaded https://dl.dropboxusercontent.com/u/151327099/3.11.9.tar.bz2 This is a tar-ball with everything you need, but it will quite invasively trample all over /boot. So download this file to /tmp cd / mount -o remount,rw /boot tar jxvf /tmp/3.11.9.tar.bz2 It assumes that you have /boot on...

MattF

A rough answer from my history: rm -rf ~/311MOD && mkdir ~/311MOD && make -j2 ARCH=arm CROSS_COMPILE=${CCPREFIX} && make ARCH=arm CROSS_COMPILE=${CCPREFIX} INSTALL_MOD_PATH=/home/apf/311MOD modules_install && cp arch/arm/boot/zImage /home/apf/Jul4 && cd ~/311MOD && tar jcvf ../Jul4/Sep25.tar.bz2 . e...

MattF

Been away for a while on other things. I've recently updated to 3.11.9 with aufs and the current firmware with the SD corruption fixes in the firmware. I'll post an updated tar-ball tomorrow as it's a little late now, complete with an updated /boot The initramfs is of course embedded in the kernel. ...

MattF

Hmm,

This does indeed suggest there is a problem with tun.ko - a mismatch of some sort between the running kernel and the module.

I haven't been on the 3.6 branch for ages. Are you fully up to date with rpi-update?

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