[Crash-utility] question on some command params

[Jun Koi]

On Tue, Sep 23, 2008 at 2:49 AM, Dave Anderson <anderson at redhat.com> wrote:
> Jun Koi wrote:
>>
>> On Tue, Sep 23, 2008 at 12:49 AM, Dave Anderson <anderson at redhat.com>
>> wrote:
>>
>>> Jun Koi wrote:
>>>
>>>> Hi,
>>>>
>>>> I found below cmdline params having no documentation anywhere, so
>>>> could somebody explain their meaning?
>>>>
>>>> - memory_module
>>>> - no_modules
>>>> - no_ikconfig
>>>> - no_namelist_gzip
>>>> - no_kmem_cache
>>>> - kmem_cache_delay
>>>> - readnow
>>>> - buildinfo
>>>> - zero_excluded
>>>>
>>>>
>>>> Many thanks,
>>>> J
>>>
>>> They're all essentially debug flags for use on kernels/dumpfiles
>>> that for some reason or other would not initialize properly.
>>>
>>> memory_module: if /dev/mem or /dev/crash do not suffice you could
>>> force-feed one or the other for live system analysys.
>>

Sorry if this is a stupid question, but how to have /dev/crash device?

Thanks,
J