* How to stop kernel rebooting during startup?
@ 2010-06-02 22:20 Grant Coady
2010-06-02 22:35 ` Bob Copeland
0 siblings, 1 reply; 3+ messages in thread
From: Grant Coady @ 2010-06-02 22:20 UTC (permalink / raw
To: linux-kernel
Hi there,
Kernel has a problem mounting root, but it reboots before I can read
the message. Of course nothing gets logged so I cannot see exactly
why the kernel wants to reboot.
Can I stop kernel doing an automatic reboot? How?
It's version 2.6.33.5, .4 has same behaviour. Filesystem is Reiserfs,
Intel ICH9R with Core2Duo, .config is on:
http://bugsplatter.id.au/kernel/boxen/pooh64/config-2.6.33.5a.gz
which worked fine on slackware64-13.0, has this behaviour on slack-
ware64-13.1. Because I cannot read the screen before reboot, no idea
where to look next, or what is actually happening.
Thanks,
Grant.
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: How to stop kernel rebooting during startup?
2010-06-02 22:20 How to stop kernel rebooting during startup? Grant Coady
@ 2010-06-02 22:35 ` Bob Copeland
2010-06-03 17:08 ` Randy Dunlap
0 siblings, 1 reply; 3+ messages in thread
From: Bob Copeland @ 2010-06-02 22:35 UTC (permalink / raw
To: Grant Coady; +Cc: linux-kernel
On Wed, Jun 2, 2010 at 6:20 PM, Grant Coady <gcoady.lk@gmail.com> wrote:
> which worked fine on slackware64-13.0, has this behaviour on slack-
> ware64-13.1. Because I cannot read the screen before reboot, no idea
> where to look next, or what is actually happening.
Maybe try CONFIG_BOOT_PRINTK_DELAY to see the message?
--
Bob Copeland %% www.bobcopeland.com
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: How to stop kernel rebooting during startup?
2010-06-02 22:35 ` Bob Copeland
@ 2010-06-03 17:08 ` Randy Dunlap
0 siblings, 0 replies; 3+ messages in thread
From: Randy Dunlap @ 2010-06-03 17:08 UTC (permalink / raw
To: Bob Copeland; +Cc: Grant Coady, linux-kernel
On Wed, 2 Jun 2010 18:35:45 -0400 Bob Copeland wrote:
> On Wed, Jun 2, 2010 at 6:20 PM, Grant Coady <gcoady.lk@gmail.com> wrote:
> > which worked fine on slackware64-13.0, has this behaviour on slack-
> > ware64-13.1. Because I cannot read the screen before reboot, no idea
> > where to look next, or what is actually happening.
>
> Maybe try CONFIG_BOOT_PRINTK_DELAY to see the message?
That's one option.
Can you alter the kernel command line (boot options)?
like add: initcall_debug debug ignore_loglevel pause_on_oops=30
Sounds like it would also be good to have something like:
reboot=hang|spin
(TBD)
---
~Randy
*** Remember to use Documentation/SubmitChecklist when testing your code ***
^ permalink raw reply [flat|nested] 3+ messages in thread
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2010-06-02 22:20 How to stop kernel rebooting during startup? Grant Coady
2010-06-02 22:35 ` Bob Copeland
2010-06-03 17:08 ` Randy Dunlap
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