From: Artem Bityutskiy <dedekind1@gmail.com>
To: hejianet <hejianet@linux.vnet.ibm.com>
Cc: linux-mtd@lists.infradead.org
Subject: Re: [question]MTD:unstable bit issues?
Date: Mon, 12 Nov 2012 17:39:59 +0200 [thread overview]
Message-ID: <1352734799.2262.11.camel@sauron.fi.intel.com> (raw)
In-Reply-To: <5087B304.8010903@linux.vnet.ibm.com>
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On Wed, 2012-10-24 at 17:21 +0800, hejianet wrote:
> Hi Thomas
> till now, we have no evidence that it is a jffs2.
> we only observed a ubi error msg(not 100% sure it caused this hole):
>
> Oct 15 20:09:10 (none) kernel: UBI error: ubi_io_write error -5 while writing 2048 bytes to PEB 1663:20480, written 0 bytes
>
> Besides, it only appeared in power-cut stress cut, so I suspect it is relevant
> to "unstable bits issue". from google information, this issue appears in both
> nand and nor flash, but more frequently in nand.
Unstable bits issue does not give you tons of zeroes. I really think
that this is either a JFFS2 bug - fsync does not work, or your test
scripts have a bug - you power-cut before fsync or you do fsync, then
write more to this file, then power-cut.
--
Best Regards,
Artem Bityutskiy
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next prev parent reply other threads:[~2012-11-12 15:39 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-24 5:14 [question]MTD:unstable bit issues? hejianet
2012-10-24 8:13 ` Thomas.Betker
2012-10-24 8:52 ` hejianet
2012-10-24 9:01 ` Thomas.Betker
2012-10-24 9:21 ` hejianet
2012-11-12 15:39 ` Artem Bityutskiy [this message]
2012-10-24 9:53 ` Jamie Lokier
2012-11-12 15:37 ` Artem Bityutskiy
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