[Crash-utility] [PATCH] kmem, snap: iomem/ioport display and vmcore snapshot support

[HATAYAMA Daisuke]

From: Dave Anderson <anderson at redhat.com>
Subject: Re: [Crash-utility] [PATCH] kmem, snap: iomem/ioport display and vmcore snapshot support
Date: Wed, 14 Mar 2012 09:16:29 -0400 (EDT)

> 
> 
> ----- Original Message -----
>> From: Dave Anderson <anderson at redhat.com>
>> Subject: Re: [Crash-utility] [PATCH] kmem, snap: iomem/ioport display
>> and vmcore snapshot support
>> Date: Tue, 13 Mar 2012 10:17:20 -0400 (EDT)
>> 

<snip>

>> 
>> Anyway it's natural that we should modify the extension module, and
>> we'll do that soon. The patch for snap command was a workaround, but
>> there's merit to the patch that it makes it possible to use it as
>> handy vmcore conversion tool, not just as live kernel dump command, so
>> I've posted this here. By this, snap command will become able to
>> convert all the format currently crash supports into ELF. Though I
>> have yet to test this, this can convert lkcd foramt into ELF, for
>> example. Someone might want to use this for vmcore not suppoted by
>> Makedumpfile.
> 
> OK, here's what to do.  The snap extension module is just that -- it
> takes a "snapshot" of live physical memory and creates an ELF file.
> I don't want to change that.
> 

It appeared to me that it's natural to add the support of vmcore
memory to snap command for a small change of the code; part of getting
memory mapping only.

> However, I suppose the concept of a "conversion-to-ELF" tool makes sense.
> That being the case, please create a standalone extension module, and 
> call it "mkelf", or "kvm2elf", or whatever name you want.  Then we can
> add it to the collection of modules on the extension module web page.
> 

OK. This takes just a little more time than extending snap
command. I'll send the patch next or a few weeks later. I would barrow
most part from the source code of snap command.

Thanks.
HATAYAMA, Daisuke