[nflug] Backup Questions?

[Cyber Source]

Cyber Source wrote:
> Michael James wrote:
>> If I have a linux system, and want to create an exact backup on 
>> another machine...is it as simple at tar the root dir and subdirs, 
>> transfer tarball to a newly installed linux system (assuming same 
>> version) and untar the tarball at the root level? I have a production 
>> system that beginning to act up hardware wise, so I'd like to have a 
>> spare in reserve. This is not a real time backup, as in replication 
>> or clustering. I just need to duplicate the original linux system to 
>> a different box without spending hours or days reconfiguring or 
>> reinstalling the system or software. Are there certain directories 
>> that shouldn't be overwritten? Any caveats? Suggestions?
>>
>> Michael R. James
>> jamesm at thundertux.org
>>
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> You could grab an extra hard drive of at least the required size and 
> then "dump" it to the new hard drive. Recreate your partitions, mount 
> both the original and new partitions with a rescue cd of some sort (or 
> other ways too). Then tar one to the other. We do it here to replicate 
> our "tweaked" OS's, saved tons of time. Let's say you have the 
> original mounted at /mnt/orig and the new at /mnt/disk. To transfer it 
> over with tar, you could do this "tar -cf - .|(cd /mnt/disk && tar -xf 
> -)". You would then have an exact copy of what was on /mnt/orig on 
> /mnt/disk. Edit fstab's accordingly, create new initrd and your good 
> to go.
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Also, to make it bootable, install grub and edit accordingly..
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