Re: Raid 4 resize, raid0 limit question

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On Friday February 3, djani22@xxxxxxxxxxxxx wrote:
> Hello, list,
> 
> I plan to resize (grow) one raid4 array.
> 
> 1. stop the array.
> 2. resize the partition on all disks to fit the maximum size.

The approach is currently not supported.  It would need a change to
mdadm to find the old superblock and relocate it to the new end of the
partition. 

The only currently 'supported' way it to remove devices one at a time,
resize them, and add them back in as new devices, waiting for the
resync.

NeilBrown


> 
> After this restart(assemble) the array is possiple?
> I mean, how can the kernel find the superblock fits on the half of the new
> partitions?
> I need to recreate the array instead of using -G option?
> Can i force raid to resync only the new area?
> 
> The raid0 in 2.6.16-rc1 supports 4x 3.6TB soure devices? :-)

... maybe?
I think it does, but I cannot promise anything.

NeilBrown


> 
> Thanks,
> Janos
> 
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