Re: IA64 Kexec-Kdump kernel patch

[Jack Steiner <steiner@sgi.com>]

On Wed, Aug 16, 2006 at 03:34:52PM -0700, Jay Lan wrote:
> Zou Nan hai wrote:
> >On Wed, 2006-08-16 at 03:15, Jay Lan wrote:
> >
> >>Zou Nan hai wrote:
> >>
> >
> >  Did you pass the correct kernel parameter to --append?
> >  It seems that root filesystem was not able to be mounted.
> >
> 
> I finally was able to boot up the crash dump kernel.
> Unfortunately the 'cp vmcore /var/tmp' crashed due to
> out of memory. :(

Why did the crash occur? Was the disk full? Otherwise, the cached
pages _should_ have been written to disk.

Do you have a console log?


> 
> The memory on the regular kernel showed:
> [root@holism tmp]# free
>              total       used       free     shared    buffers     cached
> Mem:        805312     443520     361792          0      36288     295936
> -/+ buffers/cache:     111296     694016
> Swap:      6143968          0    6143968
> 
> and the memory on the crash dump kernel showed:
> [root@holism tmp]# free
>              total       used       free     shared    buffers     cached
> Mem:         47776      45952       1824          0       1056      11856
> -/+ buffers/cache:      33040      14736
> Swap:      6143968      54720    6089248
> 
> 
> It came down from 805312 k  to 47776 k with only 1824 free.
> How much memory do i need to do a 'cp /proc/vmcore /var/tmp'?
> 
> Thanks,
>  - jay
> 
> 
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-- 
Thanks

Jack Steiner (steiner@sgi.com)          651-683-5302
Principal Engineer                      SGI - Silicon Graphics, Inc.