Re: buildin a RAID5 md vith 6 drives

[Neil Brown]

On Friday September 3, jamagallon@xxxxxxx wrote:
> Hi all...
> 
> I tried to build a RAID5 array with 6 drivres, just with:
...
> Why does it think a drive has been removed, and the last drive is a spare ?
> Isn't raid5 symmetric over all drives ?

Read 
  man mdadm
the section on "CREATE MODE", the last paragraph before the "General
Management options" are listed.  Be sure that you have mdadm 1.4.0 or
later.

NeilBrown


[ the paragraph reads:
       When creating a RAID5 array, mdadm will automatically create a degraded
       array  with  an  extra spare drive.  This is because building the spare
       into a degraded array is in general faster than resyncing the parity on
       a  non-degraded, but not clean, array.  This feature can be over-ridden
       with the --force option.
if you remove the "-I" that really shoudn't be there... :-(
]




> 
> TIA
> 
> --
> J.A. Magallon <jamagallon()able!es>     \               Software is like sex:
> werewolf!able!es                         \         It's better when it's free
> Mandrakelinux release 10.1 (Beta 1) for i586
> Linux 2.6.8.1-mm4 (gcc 3.4.1 (Mandrakelinux (Alpha 3.4.1-3mdk)) #8
> 
> 
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