Re: [parisc-linux] New dump driver patche.

Re: [parisc-linux] New dump driver patche.

[bruno_vidal]

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Joel Soete wrote:

>
> I had another question: this system has 2Gb of RAM and my boot disk is of
> 9Gb , so my question is: may I use any swap as dump device over the famous
> 2 first Gb of the disk

Yes, you can use any swap device, the limitation of the 2Gb is coming from
the capabilities of the scsi card itself, and on any "last" system the PDC is
able to acces over 2Gb. This limitation is only on old workstation and server,
like 712/K (not all scsi card)....I need to add this checking when configuring
the crash area. I've already start to add this, but it is not yet fully tested, mainly
because it is only for old system, A/N/L don't have this limitation.

> (or is it possible to pass a parameter to the kernel
> to put this swap-dump on another disk).

Sorry, not yet, I didn't look yet how to retrieve option
from the command line. But it is in my todo list to add
"early dump" feature.

>
>
> Thanks again for all,
>     Joel
>

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



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RE: [parisc-linux] New dump driver patche.

["Beerse, Corné"]

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> -----Original Message-----
> From: bruno_vidal@hp.com [mailto:bruno_vidal@hp.com]
> 
> Joel Soete wrote:
> 
> > I had another question: this system has 2Gb of RAM and my 
> boot disk is of
> > 9Gb , so my question is: may I use any swap as dump device 
> over the famous
> > 2 first Gb of the disk
> 
> Yes, you can use any swap device, the limitation of the 2Gb 
> is coming from
> the capabilities of the scsi card itself, and on any "last" 
> system the PDC is
> able to acces over 2Gb. This limitation is only on old 
> workstation and server,
> like 712/K (not all scsi card)....I need to add this checking 
> when configuring
> the crash area. I've already start to add this, but it is not 
> yet fully tested, mainly
> because it is only for old system, A/N/L don't have this limitation.
> 
> > (or is it possible to pass a parameter to the kernel
> > to put this swap-dump on another disk).
> 
> Sorry, not yet, I didn't look yet how to retrieve option
> from the command line. But it is in my todo list to add
> "early dump" feature.


Is there a need for swap/dump-space, like on HP-UX? or can PA-Linux run
without any swap and hence without any dump area like intel-linux? Or does
PA-Linux need swapspace like VAX/VMS needs it?


CBee, just a list follower that hopes to find time to put live in his
9000/712/80.

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Re: [parisc-linux] New dump driver patche.

[bruno_vidal]

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    Hi
Joel asked for something interresting, does someone know how I can retrieve an option
passed to the kernel ? I never try it ? In which driver I need to look at ? If I can
add some option, I'll be able for example to do an early dump in case
of crash before multi user, and then before dump initialisation.

    Cheers.

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



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Re: [parisc-linux] New dump driver patche.

[Randolph Chung]

> Joel asked for something interresting, does someone know how I can retrieve an option
> passed to the kernel ? I never try it ? In which driver I need to look at ? If I can
> add some option, I'll be able for example to do an early dump in case
> of crash before multi user, and then before dump initialisation.

look up the MODULE_PARM() macro. It's used in many drivers.

randolph
-- 
Randolph Chung
Debian GNU/Linux Developer, hppa/ia64 ports
http://www.tausq.org/

Re: [parisc-linux] New dump driver patche.

[Grant Grundler]

On Tue, Apr 08, 2003 at 02:44:30PM +0200, bruno_vidal@hp.com wrote:
>     Hi
> Joel asked for something interresting, does someone know how I can retrieve
> an option passed to the kernel?

I think Randloph is right, MODULE_PARAM() should be sufficient.


But in case it's not, arch/parisc/kernel/setup.c:
	void __init start_parisc(unsigned arg0, unsigned arg1,

		arg1 is the command_line.

	void __init setup_arch(char **cmdline_p)

		cmdlinux_p is a pointer to "saved_command_line".
		a copy of the original.


An example is in kernel/printk.c:__setup("console=", console_setup);


hth,
grant

[parisc-linux] New dump driver patche.

[bruno_vidal]

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    Hi
For who  want it, I've prepared a new patch for the dump driver.
What's new:
-can dump only used pages.
-fully support multi volume dump.
-can create dump in format image for use with p4 tools.

Bug correction:
-missed pages when writing dump header.

I would be happy to send to everyone who want it.

    Cheers.

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



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Re: [parisc-linux] New dump driver patche.

[Randolph Chung]

> For who  want it, I've prepared a new patch for the dump driver.
> What's new:
> -can dump only used pages.
> -fully support multi volume dump.
> -can create dump in format image for use with p4 tools.
> 
> Bug correction:
> -missed pages when writing dump header.
> 
> I would be happy to send to everyone who want it.

is this against 2.4.20 or 2.5? can we post it on ftp.parisc-linux.org?

i'm very interested in this :)

thanks
randolph

Re: [parisc-linux] New dump driver patche.

[bruno_vidal]

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    Hi.
About the patch, I've wrote some script in order to build a patch
againt latest release. The actual patch is for 2.4.20-pa32.
I probably start now to work on 2.5 as soon I've build a 2.5 kernel ;-)

Randolph Chung wrote:

>
> is this against 2.4.20 or 2.5? can we post it on ftp.parisc-linux.org?
>
> i'm very interested in this :)
>
> thanks
> randolph
> _______________________________________________
> 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] New dump driver patche.

[Joel Soete]

Hi Bruno,

>
>    Hi
>For who  want it, I've prepared a new patch for the dump driver.
>What's new:
>-can dump only used pages.
>-fully support multi volume dump.
>-can create dump in format image for use with p4 tools.
>
>Bug correction:
>-missed pages when writing dump header.
>
>I would be happy to send to everyone who want it.
>
>    Cheers.
>
Thanks in advance, you know how much am I interested of your progress.

Do you remember last test failled because of an interrupt problem?

I would try again (and go ahead :)

Joel


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Re: [parisc-linux] New dump driver patche.

[bruno_vidal]

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    Hi.
About the interrupt problem, I spend lots of time to resolv this.
This has been solved by using PDC call in order to do push directly
on the disks by using low level function.

    Cheers.

Joel Soete wrote:

> Hi Bruno,
>
> >
> >    Hi
> >For who  want it, I've prepared a new patch for the dump driver.
> >What's new:
> >-can dump only used pages.
> >-fully support multi volume dump.
> >-can create dump in format image for use with p4 tools.
> >
> >Bug correction:
> >-missed pages when writing dump header.
> >
> >I would be happy to send to everyone who want it.
> >
> >    Cheers.
> >
> Thanks in advance, you know how much am I interested of your progress.
>
> Do you remember last test failled because of an interrupt problem?
>
> I would try again (and go ahead :)
>
> Joel
>
> ---------------------------------
> Vous surfez avec une ligne classique ?
> Economisez jusqu'à 25% avec Tiscali Complete !
> Offre spéciale : première année d'abonnement offerte.
> ... Plus d'info sur http://complete.tiscali.be
>
> _______________________________________________
> 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] New dump driver patche.

[Joel Soete]

Bruno,

>
>
>    Hi.
>About the interrupt problem, I spend lots of time to resolv this.
>This has been solved by using PDC call in order to do push directly
>on the disks by using low level function.
>
>    Cheers.
>
Very good news, I am now much more impatient to test it again.

J

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