Re: [ptxdist] Ext2 root file system above 4GB

[Michael Olbrich <m.olbrich@pengutronix.de>]

Hi,

On Tue, Dec 02, 2014 at 12:38:37PM +0000, Danny wrote:
> Our system platform is recently upgraded. Before the upgrade we were using 
> a 1GB flash disk with 2 partitions of 400MB each (double partition for 
> software upgrades). The new platform has a 16GB disk and it would be nice 
> if we could increase the 400MB partitions to 6GB.
> 
> This is easy to configure in PTXdist using the configuration (image 
> creation -- generate images/root.ext2 and generate images/hd.img). The 
> root.ext2 size is increased to 6GB (6.291.456 bytes). The hd image 
> partitions are changed to fit the double partitions.
> 
> Creating the 6GB image is causing some problems. The first issue is the 
> inodes from ext2. The first error is "Creating root.ext2 ....... sysroot-
> host/bin/genext2fs: couldn't allocate an inode (no free inode)". After 
> forcing more inodes the following error is seen: "Running e2fsck on 
> root.ext2...make: *** [images/root.ext2] Error 1". The image seems 
> corrupted.
> 
> The creation of the partition seems to work fine up to 4GB. A few MB after 
> this the image creation fails. Searching the internet got me to the 
> following patch for genext2fs: 
> http://sourceforge.net/p/genext2fs/mailman/message/29050966/
> 
> Does someone have the same issues?? Is patching the genext2fs the correct 
> solution?

I don't know these patches, so I cannot comment on any possible issues.

I don't think there is another solution right now. Future versions of
mke2fs will support creating filesystems with content. I don't know when
this will be available though.

Michael

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