[K12OSN] Got to rebulid -- how to take an image for checkpointing

[Robert Moskowitz]

Les Mikesell wrote:
> On Fri, 2006-08-25 at 08:34 -0400, Robert Moskowitz wrote:
>
>   
>>> But, you should learn how to copy your filesystems
>>> with tar and and make a new system bootable too. It isn't
>>> difficult and it is easier to learn before you need it.
>>>   
>>>       
>> Yeah, I really have to work through a TAR howto.  Know a good one?
>>     
>
> Tar isn't much of an issue. The tar commands you need are
>
>   
Thanks Les,

Matt supplied a very good guideline for starters.  I really like that 
SSH approach to put the tar on another system.

Such a simple backup method.

After years of working with the fellows that first created SSH (I 
cochaired IPsec and got the RFCs out, and worked with them then), I am 
finally learning more than the little bit of tunnelling I had been 
doing, and using Tero's Win client for so long.
> tar --one-file-system -cvf tarfile.tar  source
> to save a filesystem and
> tar -pxvf tarfile.tar
> to restore it, where
> --one-file-system means you need to do each mounted filesystem
> separately, -c means create a tar image, -v is verbose -f means
> the image file follows, and source should generally be '.' (meaning
> current directory after you have cd'd there).  On the restore side
> -p means keep the old permissions and again you should cd to the
> right place first.
>
> The complicated parts are the many ways you can access the
> image and what you have to do to make it work on a new machine. Note
> that you wouldn't really create tarfile.tar in the directory you
> are copying - it might be a path over an NFS mount or some other
> media, or it might be '-' to mean stdout which you have piped
> through ssh to a remote cat command. 
>
>