linux-ext4 - flashing large eMMC partitions with ext4

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

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
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