Can I Rebuild / and /usr Remotely? Ideas?

Drew Tomlinson drew at mykitchentable.net
Tue Sep 20 15:00:06 PDT 2005


On 9/20/2005 2:50 PM Jerry McAllister wrote:

>>On 9/20/2005 11:28 AM Jerry McAllister wrote:
>>
>>    
>>
>>>>On 9/20/2005 10:20 AM Jerry McAllister wrote:
>>>>
>>>>Thank you for your reply.  This gives me some direction in which to 
>>>>proceed.  Since the layout is as I like now, it seems to me that I would 
>>>>only have to dump / and then dump /usr.  The restore order would be 
>>>>first / then /usr.  Is that correct?  Here's my current fstab:
>>>>        
>>>>
>>>Sounds right from what you indicate here.
>>>
>>>      
>>>
>>Wait a minute.  I just thought of something.  I am not going to be able 
>>to work on da0 while it's mounted, correct?  
>>    
>>
>
>Yup.
>
>  
>
>>    and since da0s1a is my root 
>>partition, I'm not going to be able to unmount it until I boot from 
>>another disk, presumably ad0.  How do I set up ad0 so it will boot?  
>>Then after making a complete copy of / and /usr on ad0, I will have to 
>>boot from it before doing my work on da0 and da1.  At that point I'll 
>>have to do the secret incantations of fdisk and bsdlabel on da0  and 
>>da1, build my stripe, mount everything, use dump/restore to copy the 
>>contents of ad0 to it's respective places, and then finally reboot from 
>>da0.  Uh oh, I think this is getting complicated...  :)
>>    
>>
>
>That is what a fixit CD is for (or one of the many things).
>Just boot up your fixit CD and wend your way around the menus
>of choices until you get a prompt.   Or, for that matter, do
>the sliceing and dicing from sysinstall on the fixit.
>For FreeBSd 4.xxx and before the fixit is disk 2, I believe
>and for FreeBSD 5.xxx and after the fixit in CD number 1.
>  
>
Thanks.  Guess it'll just be easier to physically go to the console.  
Not that big of a deal in this case but I wanted to try it remotely just 
for future reference.  That way if the need arose, I could be fairly 
confident I could do it remotely.

Drew

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