Re: IA64 Kexec-Kdump kernel patch

Jack Steiner
2006-08-17T00:38:44Z

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.