linux-kernel - Re: Hang on "echo b > /proc/sysrq-trigger"

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Message-ID: <CADU53JXYSz0sYg6fWjdj_ZjMbZoQVfmz_oD83pSqBL85_4-UmQ@mail.gmail.com>
Date:	Fri, 23 Mar 2012 18:11:07 -0700
From:	Ray Lee <ray-lk@...rabbit.org>
To:	Keith Chew <keith.chew@...il.com>
Cc:	Jon Masters <jonathan@...masters.org>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: Hang on "echo b > /proc/sysrq-trigger"

On Sun, Mar 18, 2012 at 11:45 PM, Keith Chew <keith.chew@...il.com> wrote:
>> I've just been reviewing LKML for the past month…was there ever any followup?
>> Perhaps it's worth discussing a patch to change the below delay?
>>
>
> I was about to prepare a patch for this change last Friday, but the
> system hanged on Saturday, after a few weeks of smooth reboots. The
> other unit with reboot=p (as Eric suggested to be the most reliable
> way of rebooting) is still going without any issues, so maybe that is
> the best workaround for now.

Well, someone else may be hitting this and not know. If the situation
measurably improved by increasing the delay, then it seems like a good
idea to at least upstream that, regardless if it's perfect?
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