linux kernel configuration for software raid

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Check for support

If your system has RAID support, you should have a file called /proc/mdstat. If you do not have that file, maybe your kernel does not have RAID support.


Symbol: MD_RAID456 [=y]  
Type  : tristate  
Prompt: RAID-4/RAID-5/RAID-6 mode  
   Location:  
     -> Device Drivers  
       -> Multiple devices driver support (RAID and LVM) (MD [=y])  
         -> RAID support (BLK_DEV_MD [=y])  
   Defined at drivers/md/Kconfig:121  
   Depends on: MD [=y] && BLK_DEV_MD [=y]  
   Selects: RAID6_PQ [=y] && ASYNC_MEMCPY [=y] && ASYNC_XOR [=y] && ASYNC_PQ [=y] && ASYNC_RAID6_RECOV [=y]  
   Selected by: DM_RAID [=m] && MD [=y] && BLK_DEV_DM [=m]


Links

this guide is recommended by the linux kernel help... [Software RAID HOWTO]