From: Artem Bityutskiy <dedekind1@gmail.com>
To: rednoah <rednoax@gmail.com>
Cc: linux-mtd@lists.infradead.org
Subject: Re: why the emulated block driver by gluebi.c can't be used by FAT32
Date: Mon, 26 Jul 2010 07:11:26 +0300 [thread overview]
Message-ID: <1280117486.14917.3.camel@localhost> (raw)
In-Reply-To: <AANLkTinKvnAaLY8gGELXnQoDkUqmp2M30yNOqyNxK3pq@mail.gmail.com>
On Mon, 2010-07-26 at 12:02 +0800, rednoah wrote:
> Hi all:
> According to the documentations of mtd,the gluebi of ubi is used to
> emulate block driver on the top of ubi
gluebi emulates an MTD device on top of an UBI volume. It does not
emulate a block device.
> ,for jffs2 or other mtd-oriented
> software using.Since the ubi is capable of wear leveling and bad
> block,why we can't build FAT32 filesystem on the emulated block
> device?
> I tried building a FAT32 on a ubi volume using the emulated block
> node generated by gluebi.c.It seem ok when I transfer files between
> this
> partition and SD card.
I think you used UBI->gluebi->mtdblock->FAT. And this is bad because
mtdblock is bad - it loses data in case of power cuts. If you will never
have any power cuts, this setup may be ok, although very suboptimal in
terms of write speed.
--
Best Regards,
Artem Bityutskiy (Артём Битюцкий)
prev parent reply other threads:[~2010-07-26 4:12 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-07-26 4:02 why the emulated block driver by gluebi.c can't be used by FAT32 rednoah
2010-07-26 4:11 ` Artem Bityutskiy [this message]
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