topic Re: mkfs command in i.MX Processors

mkfs command

niklasmolin — Fri, 13 Dec 2013 22:57:29 GMT

Hi.

I'm trying to use the mkfs.ext3 command on a sabre SD board (to format the 8GB flash).

My first question is how to get the mkfs.ext3 (or ext2 and ext4) into the image (using Yocto)

Right now I tried to include e2fsprogs in my local.conf (in CORE_IMAGE_EXTRA_INSTALL) plus the bb-file for the image (in this case core-image-base).

I could see that it included the mkfs.ext3 files in my build, but I found some in directory:

./build/tmp/work/cortexa9hf-vfp-neon-poky-linux-gnueabi/e2fsprogs/1.42.8-r0/packages-split/e2fsprogs-mke2fs/sbin

So I tried to use these ones.

The problem I see is that it takes forever to format the flash, after roughly 2 hours it has format half of the flash.

Anyone who has experience with this application?

Thanks,

Niklas

LeonardoSandova — Sun, 15 Dec 2013 03:45:38 GMT

I am not sure which feature has this command but an SDK image has it

EXTRA_IMAGE_FEATURES += "dbg-pkgs \

dev-pkgs \

tools-sdk \

tools-debug \

tools-profile \

debug-tweaks"

Leo

niklasmolin — Sun, 15 Dec 2013 04:00:24 GMT

Hi Leo.

I downloaded the source code and compiled it on the board (just to make sure it was compiled correctly).

But it still took roughly 3 house to format the 8GB flash on the Sabre SD board.

I'll try this on Monday to see if it fixes the problem.

Best regards,

Niklas

niklasmolin — Fri, 31 Jan 2014 17:21:46 GMT

I finally had time to time to look at this, using information from the patch in previous response (didn't use all patches, just the first one)

I changed following line in sdhci.c

mmc->max_discard_to = (1 << 27) / host->timeout_clk;

mmc->max_discard_to = (1 << 28) / host->timeout_clk;

After this fix, it took around 1 minute to format the flash.