From: Artem Bityutskiy <dedekind1@gmail.com>
To: Mark Jackson <mpfj-list@mimc.co.uk>
Cc: "linux-mtd@lists.infradead.org" <linux-mtd@lists.infradead.org>,
"linux-omap@vger.kernel.org" <linux-omap@vger.kernel.org>,
lkml <linux-kernel@vger.kernel.org>,
adrian.hunter@intel.com
Subject: Re: MTD : Kernel oops when remounting ubifs as read/write
Date: Fri, 15 Mar 2013 10:42:01 +0200 [thread overview]
Message-ID: <1363336921.11441.119.camel@sauron.fi.intel.com> (raw)
In-Reply-To: <1363252425.11441.94.camel@sauron.fi.intel.com>
On Thu, 2013-03-14 at 11:13 +0200, Artem Bityutskiy wrote:
> On Wed, 2013-03-13 at 11:12 +0000, Mark Jackson wrote:
> > Sorry ... this just locks up the unit.
>
> OK, I've reproduced the issue with 3.9-rc2 in nandsim, see the details
> below. The patch I proposed did not get the error path correctly, but it
> does fix the issue.
>
> I think what you treat as "lockup" is the fixup process. UBIFS basically
> reads the entire UBI volume and writes it back. And it uses the atomic
> change UBI service, which means it also calculates CRC of everything it
> writes. And this all just takes a lot of time. This has to be done only
> once on the first mount.
>
> I've attached the following:
>
> 1. The patch which fixes the issue when I use nandsim. It is also
> inlined in the end. Please, give it a try and be more patient -
> wait longer. Please, do report your results back.
>From your last e-mail I see that the patch solves the issue for you if
the CRC32 problem is worked-around. I am pushing this fix to the ubifs
git tree. Thanks for the report.
--
Best Regards,
Artem Bityutskiy
prev parent reply other threads:[~2013-03-15 8:42 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-04 16:42 MTD : Kernel oops when remounting ubifs as read/write Mark Jackson
2013-03-12 11:25 ` Artem Bityutskiy
2013-03-13 11:12 ` Mark Jackson
2013-03-13 11:20 ` Artem Bityutskiy
2013-03-13 11:21 ` Mark Jackson
2013-03-14 9:13 ` Artem Bityutskiy
2013-03-14 9:54 ` Mark Jackson
2013-03-14 10:30 ` Artem Bityutskiy
2013-03-14 11:15 ` Mark Jackson
2013-03-14 11:23 ` Artem Bityutskiy
2013-03-14 12:02 ` Mark Jackson
2013-03-14 12:18 ` Artem Bityutskiy
2013-03-14 12:23 ` Artem Bityutskiy
2013-03-14 13:40 ` Mark Jackson
2013-03-14 13:55 ` Mark Jackson
2013-03-15 8:40 ` Artem Bityutskiy
2013-03-15 11:03 ` AM335x crc32 oops ? Mark Jackson
2013-03-15 8:42 ` Artem Bityutskiy [this message]
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