linux-kernel - Re: [2.6.21.1] resume doesn't run suspended kernel?

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Message-ID: <465A4953.7030708@tmr.com>
Date:	Sun, 27 May 2007 23:15:31 -0400
From:	Bill Davidsen <davidsen@....com>
To:	Pavel Machek <pavel@....cz>
CC:	Linux Kernel M/L <linux-kernel@...r.kernel.org>
Subject: Re: [2.6.21.1] resume doesn't run suspended kernel?

Pavel Machek wrote:
> On Sat 2007-05-26 18:42:37, Bill Davidsen wrote:
>   
>> I was testing susp2disk in 2.6.21.1 under FC6, to 
>> support reliable computing environment (RCE) needs. The 
>> idea is that if power fails, after some short time on 
>> UPS the system does susp2disk with a time set, and boots 
>> back every so often to see if power is stable.
>>
>> No, I don't want susp2mem until I debug it, console come 
>> up in useless mode, console as kalidescope is not what I 
>> need.
>>
>> Anyway, I pulled the plug on the UPS, and the system 
>> shut down. But when it powered up, it booted the default 
>> kernel rather than the test kernel, decided that it 
>> couldn't resume, and then did a cold boot.
>>
>> I can bypass this by making the debug kernel the 
>> default, but WHY? 
>>     
>
> HELL YES :-). We do not save kernel code into image.
>
>   
That's clear, I'll have to use xen or kvm or similar which restores the 
system as suspended. Thanks for the clarification of the limitations.

-- 
bill davidsen <davidsen@....com>
  CTO TMR Associates, Inc
  Doing interesting things with small computers since 1979

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