From: Scott Branden <sbranden@broadcom.com>
To: Richard Weinberger <richard@nod.at>
Cc: "linux-mtd@lists.infradead.org" <linux-mtd@lists.infradead.org>
Subject: Re: suspect UBIFS async operations causing issues during reboot
Date: Fri, 7 Nov 2014 09:31:32 -0800 [thread overview]
Message-ID: <545D01F4.9050005@broadcom.com> (raw)
In-Reply-To: <545C8697.3080403@nod.at>
On 14-11-07 12:45 AM, Richard Weinberger wrote:
> Am 06.11.2014 um 22:56 schrieb Scott Branden:
>> It looks like the erase happening in the middle of reboot was uncovered in 2009 and never addressed properly?
>>
>> https://lkml.org/lkml/2009/6/9/16
>> https://lkml.org/lkml/2010/2/12/144
>>
>> Was there a proper resolution to this issue?
>
> Did you read the threads you've posted?
>
> There two answers:
> https://lkml.org/lkml/2010/2/12/143
Yes, there is no hardware solution to a reset happening in the middle of
an erase operation to NAND.
> https://lkml.org/lkml/2010/2/12/144
Yes, it appears nobody has ever implemented a reboot notifier in the
past 5 years to solve this problem for NAND.
We are experimenting with a notifier in UBI and MTD which is a much
cleaner shutdown than just a notifier at the MTD level. UBI reboot
notifier priority needs to be shut down first and have a higher priority
than flash device. Overnight results are looking promising.
>
> Thanks,
> //richard
>
next prev parent reply other threads:[~2014-11-07 17:31 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-05 8:32 suspect UBIFS async operations causing issues during reboot Scott Branden
2014-11-05 9:22 ` Richard Weinberger
2014-11-05 17:56 ` Scott Branden
2014-11-05 18:21 ` Richard Weinberger
2014-11-05 22:52 ` Scott Branden
2014-11-06 21:56 ` Scott Branden
2014-11-07 8:45 ` Richard Weinberger
2014-11-07 17:31 ` Scott Branden [this message]
2014-11-09 10:20 ` Richard Weinberger
2014-11-10 5:10 ` Scott Branden
2014-11-26 8:17 ` Brian Norris
2014-11-26 8:30 ` Richard Weinberger
2014-11-26 9:25 ` Brian Norris
2014-11-27 19:07 ` Scott Branden
2014-11-10 8:44 ` Ricard Wanderlof
2014-11-10 9:08 ` Richard Weinberger
2014-11-10 7:44 ` Tanya Brokhman
2014-11-12 11:20 ` Artem Bityutskiy
2014-11-15 3:30 ` Scott Branden
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