renovate partitions without reinstalling

[Jeff Vian]

Charles Howse wrote:

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>On Monday 08 March 2004 02:04 pm, thedogfarted wrote:
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>>>Ummm...I thought we mounted filesystems rather than partitions...?
>>>Could you show me an example of how to mount a partition while in rescue
>>>mode, please?
>>>      
>>>
>>let it be filesystems. never heard about more filesystems on one
>>partition or one filesystem on many partitions
>>    
>>
>
>After referring to man mount, it appears you are correct.
>My apologies.  :-)
>  
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A partition by definition is a filesystem (unless you are talking about 
lvm, but that is a filesystem on a logical volume (partition) that can 
span multiple physical volumes). A partition cannot be mounted unless 
the fileysytem has been created.

However, it is possible to mount a portion of a filesystem.  See the 
--bind or --rbind options.
Also consider how nfs and samba shares work.  There a piece of a 
filesystem begining at a particular point is allowed to be mounted remotely.

>>for example i had to move all data form /dev/hda6 (my previous /home) to
>>/dev/hda3 (newly created)
>>
>>#mkdir /mnt/oldhome
>>#mkdir /mnt/newhome
>>
>>#mount /dev/hda6 -t ext3 /mnt/oldhome
>>#mount /dev/hda3 -t ext3 /mnt/newhome
>>
>>#cp -r /mnt/oldhome/* /mnt/newhome
>>    
>>
Be careful here!!  In the shell the '*' does NOT find/copy hidden files 
or folders (those whose name begins with a "." such as " .bashrc".  

To confirm that  a simple comparison of the results of "ls -d *"  and 
"ls -d .*" in your home directory will show the difference.

>>    
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>>>>now that you have copied all the files you wanted to reside on hda
>>>>(probably all /boot partition and / without /home and /tmp) do what you
>>>>want with hdc - probably move files that /home is instead of previous /
>>>>etc and then edit grub.conf and fstab, it could look like this
>>>>        
>>>>
>>>Stop...I'm lost.
>>>I was with you until we started moving "files that /home is..."
>>>I must not be reading correctly, it doesn't make sense.  :-)
>>>      
>>>
>>probably i missed something there (as i said english is not my native,
>>it's quite hard to think in two languages :)
>>
>>the idea was to move contents of /home that they reside on / of your
>>filesystem so you can mount it. If /dev/hdc2 was your / (and you have
>>copied it's contents to hda2) then you can do the following:
>>
>>#mkdir /mnt/oldroot
>>#mount /dev/hdc2 -t ext3 /mnt/oldroot
>>
>>delete all you have moved to hda2
>>
>>#cp -r /home/* /
>>
>>and delete the old home
>>
>>#rm -rf /home
>>    
>>
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>OK, I understand now...thanks.
>
>
>- -- 
>Charles Howse
>Jackson, TN
>Registered Linux user # 347576 (http://counter.li.org)
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