On Wed, Apr 19, 2006 at 02:16:10PM -0400, Ming Zhang wrote:
> is this possible?
> * stop RAID5
> * set a mirror between current disk X and a new added disk Y, and X as
> primary one (which means copy X to Y to full sync, and before this ends,
> only read from X); also this mirror will not have any metadata or mark
> on existing disk;
The mirror should be created without persistent superblocks (obviously),
but --build does not seem to allow RAID1.
> * add this mirror to RAID5
> * start RAID5;
>
> ... mirror will continue copy data from X to Y, once end
>
> * stop RAID5
> * split mirror
> * put DISK Y back to RAID5
> * restart RAID5.
>
> since this is a mirror, all metadata are same. it will be even greater
> if no need to stop raid5 to do this.
The process seems rather fragile. If I created a RAID5 array to protect
my data I most certainly would not like to perform so much steps where I
can mess up.
Gabor
--
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MTA SZTAKI Computer and Automation Research Institute
Hungarian Academy of Sciences
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