From: Artem Bityutskiy <dedekind1@gmail.com>
To: "Gupta, Pekon" <pekon@ti.com>
Cc: MTD Maling List <linux-mtd@lists.infradead.org>,
Ricard Wanderlof <ricard.wanderlof@axis.com>
Subject: Re: Grow UBI device?
Date: Thu, 10 Oct 2013 10:42:42 +0300 [thread overview]
Message-ID: <1381390962.7875.57.camel@sauron.fi.intel.com> (raw)
In-Reply-To: <20980858CB6D3A4BAE95CA194937D5E73EA20350@DBDE04.ent.ti.com>
On Wed, 2013-10-09 at 11:28 +0000, Gupta, Pekon wrote:
> Yes, during mounting of UBIFS volumes, UBI checks for erase-header
> on first-page of every block.
> - If it's able to find a valid erase-header, with correct image_seq field,
> then it attaches it to its pool.
> - Otherwise, if the valid erase-header was not found, then it assumes
> then it ubi will try re-erasing it. And add it to its pool of free-blocks.
I think there is a separate list for blocks with garbage, and if UBI
finds too much of them, it attaches R/O. So if it would find too many
JFFS2 eraseblocks, it would not erase them. But erasing the JFFS2 blocks
from outside of UBI driver would help.
--
Best Regards,
Artem Bityutskiy
next prev parent reply other threads:[~2013-10-10 7:43 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-08 19:28 Grow UBI device? Wolfgang Denk
2013-10-09 7:28 ` Matthieu CASTET
2013-10-09 8:46 ` Ricard Wanderlof
2013-10-09 11:28 ` Gupta, Pekon
2013-10-09 15:05 ` Wolfgang Denk
2013-10-09 15:45 ` Ricard Wanderlof
2013-10-09 18:47 ` Richard Weinberger
2013-10-09 20:01 ` Wolfgang Denk
2013-10-10 7:42 ` Artem Bityutskiy [this message]
2013-10-09 14:33 ` Wolfgang Denk
2013-10-10 8:17 ` Artem Bityutskiy
2013-10-10 8:34 ` Richard Weinberger
2013-10-15 17:40 ` Wolfgang Denk
2013-10-15 18:38 ` Richard Weinberger
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