From: Jaap-Jan Boor <jjboor@aimsys.nl>
To: Mathieu Deschamps <mathieu.deschamps@com2gether.net>
Cc: David Jander <david.jander@protonic.nl>, linuxppc-embedded@ozlabs.org
Subject: Re: How to quickly write cleanmarkers to jffs2 partitions?
Date: Mon, 06 Mar 2006 13:21:24 +0100 [thread overview]
Message-ID: <1141647684.23522.7.camel@linpc041.aimsys.nl> (raw)
In-Reply-To: <200603031008.20075.mathieu.deschamps@com2gether.net>
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On Fri, 2006-03-03 at 10:08 +0100, Mathieu Deschamps wrote:
> Hi,
>
> "When preparing a flash partition for JFFS2, it is recommended to put
> cleanmarkers to the erased blocks.
> This might be done my means of "-j" option of the "flash_eraseall" MTD
> utility. Otherwise, JFFS2 will re-erase the blocks
> which contain all 0xFF and have no cleanmarker. This is an unneeded wasting of
> time."
>
> Source : http://www.linux-mtd.infradead.org/faq/jffs2.html
>
> does this may be relevant ?
This is correct, however flash_eraseall does also (as it's
name suggests, erase all flash blocks, which takes
some time on NOR flash. If you 'know' the flash is erased,
it's not needed.
I used flash_eraseall to write the cleanmarkers, but without
erasing blocks (and called that utility cleanmark)
Jaap-Jan
>
>
>
> Best Regards,
>
>
> Mathieu Deschamps.
>
> _______________________________________________
> Linuxppc-embedded mailing list
> Linuxppc-embedded@ozlabs.org
> https://ozlabs.org/mailman/listinfo/linuxppc-embedded
>
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next prev parent reply other threads:[~2006-03-06 12:36 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-03-02 16:06 How to quickly write cleanmarkers to jffs2 partitions? David Jander
2006-03-02 17:07 ` Jaap-Jan Boor
2006-03-03 9:08 ` Mathieu Deschamps
2006-03-06 12:21 ` Jaap-Jan Boor [this message]
2006-03-08 8:38 ` David Jander
2006-03-10 17:10 ` Jaap-Jan Boor
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