Re: Possible to change chunk size on RAID-1 without re-init or destructive result?

[Roy Sigurd Karlsbakk <roy@karlsbakk.net>]

From the manual

       -c, --chunk=
              Specify  chunk size of kibibytes.  The default when creating an array is 512KB.  To ensure compatibility with ear‐
              lier versions, the default when Building and array with no persistent metadata is 64KB.  This is  only  meaningful
              for RAID0, RAID4, RAID5, RAID6, and RAID10.

meaning - chunk size isn't relevant to a mirror

----- Opprinnelig melding -----
> Greetings,
> 
> I have a RAID-1, two disk volume that was created with a strange chunk
> size. For reasons I won't go into here removing the data and
> redefining a new RAID-1 volume with a different chunk size is
> presently not a viable option.
> 
> Since this is a two disk mirror I should, /*theoretically*/ be able to
> redefine the chunk size without impacting existing data. I have never
> attempted such a thing and am not sure how best to go about it. I know
> in a striped data level like RAID-5 or RAID-6 this would absolutely
> not be possible.
> 
> I know I would have to set a different chunk size in the superblock.
> Google and wiki research do not show a clear method to do this.
> 
> Any suggestions are appreciated.
> 
> --Jeff
> 
> 
> --
> ------------------------------
> Jeff Johnson
> Co-Founder
> Aeon Computing
> 
> jeff.johnson@aeoncomputing.com
> www.aeoncomputing.com
> t: 858-412-3810 x101 f: 858-412-3845
> 
> 4170 Morena Boulevard, Suite D - San Diego, CA 92117
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-- 
Vennlige hilsener / Best regards

roy
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Roy Sigurd Karlsbakk
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