>On 15/11/06, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote:
>>
>> >I suppose it depends how 'catastrophic' the failture is, but if it's
>> >very low level,
>> >booting another root probabyl won't help, and if it's too high level, how 
>> >will
>> >you detect it (i.e. you've booted the kernel, but it is buggy).
>>
>> If it panics (but not too early) or fails to come up properly?
>
>Detecting 'come up properly' sounds hard
>(as in 'turing test hard') to me.

Yep.  For one, I don't think you can ever detect this for failures
before the root filesystem is mounted read-write.

Of course, since Sun is a system's company, that bit can conceivably
be solved by changing the ILOM/ALOM to detect those.

But for those systems it is less of an issue because they can be
removely managed/powercycled/etc.


Casper
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