[parisc-linux] towards unattended reboot

[parisc-linux] towards unattended reboot

[lamont]

Q: Given a 2.4.19 kernel, how do you get it to automatically reboot on crash?

A: see below.  The first one breaks the loop on dumping the stack.  The
   second part resets the machine in parisc_terminate().

thoughts?
lamont

diff -ur x/kernel-source-2.4.19-hppa/arch/parisc/kernel/traps.c kernel-source-2.4.19-hppa/arch/parisc/kernel/traps.c
--- x/kernel-source-2.4.19-hppa/arch/parisc/kernel/traps.c	2002-10-19 16:25:59.000000000 -0600
+++ kernel-source-2.4.19-hppa/arch/parisc/kernel/traps.c	2002-12-06 00:07:40.000000000 -0700
@@ -148,6 +148,11 @@
 void show_stack(struct pt_regs *regs)
 {
 #if 1
+	static int tried_stack=0;
+	if (tried_stack)
+		return;
+	tried_stack++;
+
 	/* If regs->sr[7] == 0, we are on a kernel stack */
 	if (regs->sr[7] == 0) {
 
@@ -462,6 +467,12 @@
 	 * system will shut down immediately right here. */
 	pdc_soft_power_button(0);
 	
+	{
+		static int tried_once=0;
+		if (!tried_once++)
+			__raw_writel(5,0xfffe0030);
+	}
+	
 	for(;;)
 	    ;
 }

Re: [parisc-linux] towards unattended reboot

[Carlos O'Donell]

> Q: Given a 2.4.19 kernel, how do you get it to automatically reboot on crash?
> 
> A: see below.  The first one breaks the loop on dumping the stack.  The
>    second part resets the machine in parisc_terminate().

Looks awesome in my opinion. I've needed something like this for my
cluster, it gets anyone when machines don't reset on crash :)

Though having this be optional seems like an important feature to add.

c.

Re: [parisc-linux] towards unattended reboot

[Bruno Vidal]

[-- Attachment #1: Type: text/plain, Size: 1042 bytes --]

In the dump driver, at the end of dump, it reboot automatically:

...
        DUMP_PRINT("Rebooting in %d seconds ...", panic_timeout);
        dump_wait_n_msec(panic_timeout * 1000);
        machine_restart(NULL);
        return;
}


Carlos O'Donell wrote:

> > Q: Given a 2.4.19 kernel, how do you get it to automatically reboot on crash?
> >
> > A: see below.  The first one breaks the loop on dumping the stack.  The
> >    second part resets the machine in parisc_terminate().
>
> Looks awesome in my opinion. I've needed something like this for my
> cluster, it gets anyone when machines don't reset on crash :)
>
> Though having this be optional seems like an important feature to add.
>
> c.
>
> _______________________________________________
> parisc-linux mailing list
> parisc-linux@lists.parisc-linux.org
> http://lists.parisc-linux.org/mailman/listinfo/parisc-linux




--
        Vidal Bruno, (770-4271)
        SSD-HA Team, HP-UX & LINUX Support
        bruno_vidal@admin.france.hp.com



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Re: [parisc-linux] towards unattended reboot

[LaMont Jones]

On Fri, Dec 06, 2002 at 11:22:27AM -0500, Carlos O'Donell wrote:
> Looks awesome in my opinion. I've needed something like this for my
> cluster, it gets anyone when machines don't reset on crash :)
> Though having this be optional seems like an important feature to add.

I want a /proc entry to tweak it... :-)

lamont