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Re: Questions on Partitioning across two drives



On Monday 11 May 2009 11:40:05 Kevin J. Cummings wrote:
> Jim wrote:
> > Thanks Kevin for your help on this.
> > Can I change a ext3 partition  (sda1) with  data on it to raid 0 or do I
> > have to do a fresh install ?
>
> Look at the raid tools like mdadm.  I'm pretty sure you can (mdadm
> --assemble?), but you have to be careful of the options you use when you
> create the raid array.  Read the help files and the man pages.
>
> caveat:  I don't run RAID at home (nor do I use LVM anymore), but I used
> to work for a RAID storage array company 7-8 years ago....
>

If I am not mistaken, writing the software RAID metadata to the existing 
partition would damage the filesystem.  Additionally, playing with the root 
partition and the partition that contains /boot (in this case they are the 
same) can very quickly render a system unbootable, as there are many potential 
places where configuration changes would be necessary, including the boot 
loader.  Unless you have a strong attachment to the running instance, I 
strongly recommend backing up your data and starting with a fresh 
installation.

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