From: Round Robinjp <roundrobinjp@yahoo.co.jp>
Subject: flashing large eMMC partitions with ext4
Date: Sat, 23 Jul 2011 00:49:28 +0900 (JST)
Message-ID: <20110722154936.30251.qmail@web4208.mail.ogk.yahoo.co.jp>
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To: linux-ext4@vger.kernel.org
Sender: linux-ext4-owner@vger.kernel.org

Hi

I have a question regarding making ext4 image for
large eMMC partition.
 
We have a 4G partition in our embedded device
in which we want to use ext4 filesystem.
But for that we have to create a 4G image.
flashing this 4G image to the eMMC takes a long
time. Is there any way to reduce this time?

For vfat, you can truncate the image leaving only
non zero-filled blocks which makes the image very
short and the time for flashing is reduced.
Is something similar to that possible for ext4?

Thanks
Robin