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   mdadm    ( 8 )

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BUILD MODE

Usage: mdadm --build md-device --chunk=X --level=Y
                   --raid-devices=Z devices

       This usage is similar to --create.  The difference is that it
       creates an array without a superblock.  With these arrays there
       is no difference between initially creating the array and
       subsequently assembling the array, except that hopefully there is
       useful data there in the second case.

       The level may raid0, linear, raid1, raid10, multipath, or faulty,
       or one of their synonyms.  All devices must be listed and the
       array will be started once complete.  It will often be
       appropriate to use --assume-clean with levels raid1 or raid10.