[dm-devel] help : device mapper is robust over power failure ?

[kiran dalvi]

Hi All,

  I want to know whether device mapper is robust over power failure ?
  If it is then I want to know how I can test this functionality.

   for example :
        I have two disks and I am mirroring first disk data on second disk. 
Is there any way I can see
        status of data mirroring.If during mirroring process power is failed 
then how device mapper will
        handle that state ?

   Please guide me.

Regards
Kiran

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