[OpenWrt-Devel] [PATCH] Ubnt EdgeRouter: Use mmcblk0p3 as ext4 rootfs for default ?

[daniel]

On 01/21/2016 08:57 AM, John Crispin wrote:
> 
> 
> On 20/01/2016 17:15, daniel wrote:
>> The UBNT EdgeRouter has an internal mmc flash card.
>> (unlike the EdgeRouter Lite)
>>
>> The factory mmc flash card layout is:
>>
>> Device         Boot  Start     End Sectors  Size Id Type
>> /dev/mmcblk0p1 *        63   17135   17073  8.3M 83 Linux
>> /dev/mmcblk0p2       17199  149183  131985 64.5M 83 Linux
>> /dev/mmcblk0p3      149247 2246831 2097585    1G 83 Linux
>>
>> This patch edits the kernel command line to use the the 3rd partition
>> as rootfs (ext4).
>> I think this makes sense for a default configuration when installing
>> openwrt on the mmc flash card of the EdgeRouter.
>>
>> What do you think ?
>>
>> Signed-off-by: Daniel Danzberger <daniel at dd-wrt.com>
>>
>>
>>
> 
> we use block2mtd so that sysupgrade works. your patch technically is
> fine but will break at least sysupgrade on this target.
> 

I changed the patch to use block2mtd.

While testing sysupgrade, I noticed that it's currently borken on this
device, because the /tmp/sysinfo/board_name file contains "ubnt,er200".
For sysupgrade to work, the file should contain "er".
However, deleting the file before running sysupgrade fixes the problem.

With this patch, I am now able to use the EdgeRouter properly with an
1 GB ext4 rootfs. But squashfs images won't work anymore due the change
of the rootfstype= in the kernel cmdline.

Maybe the squashfs image should be removed for the Edgerouter builds ?
Or is there a way to use different cmdlines for each image ?

> 
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-- 
Regards

Daniel Danzberger
embeDD GmbH, Breitenweg 10, CH-6370 Stans
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