Mailinglist Archive: opensuse (818 mails)

[Per Jessen <per@xxxxxxxxxxxx>]

Dave Howorth wrote:

> John Andersen wrote:
> > With software raid you can apply raid after the fact.
> > Yast does this for you.
> > I had to do this, (back in 11.0 I believe) where I had a data
> > partition on a single drive, and decided to add another for raid 1.
> > I built the array in yast just to see if it could be done. (all my
> > prior setups were done with Madm at the command line).
> > I told yast that the second drive was a hot spare, and that the array
> > was running degraded.
> > It rebuilt it as soon as it fired up.
>
> I'm curious as to how this worked. Don't mdadm physical volumes have a
> different partition type to a 'regular' filesystem?

0xFD for raid auto-detect. 

> On the other hand, I can see how the instructions at
<https://wiki.archlinux.org/index.php/Convert_a_single_drive_system_to_RAID>
> would work to perform the task. i.e.:
>
>     * Create a single-disk RAID-1 array with our new disk
>     * Move all your data from the old-disk to the new RAID-1 array
>     * Verify the data move was successful
>     * Wipe the old disk and add it to the new RAID-1 array

I'm pretty certain I've done something like that in the past.


-- 
Per Jessen, Zürich (16.3°C)

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