[Crash-utility] vmcore file size 0 on x86_64

[Dave Anderson]

Forwarded to kexec list:

  http://lists.infradead.org/pipermail/kexec/2009-August/003474.html

----- "Chandan12 K" <chandan12.k at tcs.com> wrote:

> Hi,
> 
> I am little new in this mailing list. I just wondered if anybody could
> help me regarding the vmcore file generation. I ran kexec on my x86_64
> machine, and the /proc/vmcore file is created with zero size.
> 
> However, even if I read the /dev/oldmem file, I am only able to read
> till 16M. I guess I am only able to read till the 'X', where X is
> crashkernel=Y at X.
> 
> Moreover, My machine seems to have 32 bit user space and ofcourse, 64
> bit kernel space.
> 
> Appreciate any response.
> 
> Chandan Kumar
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