rescue mode

[John Summerfield]

John Summerfield wrote:
> Brennan Ashton wrote:
>> On Wed, 2008-09-17 at 10:59 +0800, John Summerfield wrote:
>>> This bug, https://bugzilla.redhat.com/show_bug.cgi?id=159287, is an 
>>> enhancement proposal. It's been around for years, and as of now it 
>>> hasn't been done.
>>>
>>> Its purpose is to add a rescue mode to the actual running system - no 
>>> messy alternative boot media required.
>>>
>>> It requires added function to nash and to mkinitrd, not a lot at all.
>>>
>>> Please review the bug report, and if you think this is something that 
>>> should be done _now_, please speak up and say so.
>>>
>>> I tried to use it a few minutes ago on my system that does not boot. 
>>> It does not work.
>>>
>>>
>>> -- 
>>>
>>> Cheers
>>> John
>> I would think it would loose a lot of the rescue features, most of what
>> I see is people running into rescue mode to fix an LVM issue. If the LVM
>> tools are not available that is not going to help.  What were you
>> thinking of in particular?
>>
> 
> If the content is user-configurable as I suggested, the lvm tools could 
> be included in the rescue initd.
> 
> Remember, this initrd would not be loaded for normal use, only when one 
> might otherwise reach for a rescue CD.
> 
> Modern computer have heaps of RAM even to load quite a unrespectably 
> large image!
> 
> It might not help people with small computers; they just turn off that 
> functionality and proceed as before.


I'm digging around in the f9 netinst iso atm, trying to solve my kernel 
problem. The initrd for this iso loads a 100 Mbyte or so ramdisk that 
contains basically the rescue disk+installer. It shouldn't be hard to 
copy this to the installed system and boot it from grub.

With the recover option, one would expect this might be regenerated as 
new kernels (and tools) are installed.

-- 

Cheers
John

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