qtmoko v35

[Ivan Matveev]

On Mon, 11 Apr 2011 10:13:34 +0200
Radek Polak <psonek2 at seznam.cz> wrote:
[...] 
> We had problems with ubifs too. Gennady talked to ubifs devs and they
> would like to see the kernel message and nandump so they could try
> too look into it. 
> 
> It seems that ubifs is not as stable as jffs2 which was 100% perfect.
> Only problem is that jffs2 cant do mmap and apt-get does not work
> without mmap. 
> 
> Jffs2 will never do mmap (according to the main devel it's a lot of
> complex work because of compression) so we have these options now:
> 
> * live with bugged ubifs
> * patch apt-get so that it works without mmap
> * use the old trick with /var/cache/apt on tmpfs, but this has
> problems with limited memory and bigger upates/upgrades might not work
> * use some other flash filesystem - yaffs seems but does not support
> compression, i havent looked at logfs yet
> 
> So any suggestions?

We could use jffs2 if we link /var/cache/apt to a tiny partition on SD.
Then while SD is in huge updates will work, if SD is removed -> no apt,
but still a runing system.