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From: David Lambert <dave@lambsys.com>
To: linux-mtd <linux-mtd@lists.infradead.org>
Subject: Verify-after-write on sub-pages
Date: Thu, 27 Jan 2011 09:51:57 -0600	[thread overview]
Message-ID: <4D41949D.2030505@lambsys.com> (raw)

I am working on a project that requires high reliability of logged data 
which is written to a UBI file system on NAND. I have observed one 
hardware failure mode at elevated temperatures where some chips report 
that a write was successful even though a subsequent read indicates that 
this was not true. To mitigate this I enabled 
CONFIG_MTD_NAND_VERIFY_WRITE. Unfortunately I found this does not work 
on sub-pages which are used by UBI. As a workaround I have forced UBI 
not to use sub-pages, but I was curious if either there were plans to 
add this feature, or if anyone was working on implementing it?

Regards,

Dave.

             reply	other threads:[~2011-01-27 15:52 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-01-27 15:51 David Lambert [this message]
2011-01-29 16:16 ` Verify-after-write on sub-pages Artem Bityutskiy

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