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I've read a bit about that mdadm (and the kernel) now have bad block support but I am having a hard time finding any useful documentation on this subject.

  1. Is the bad block list for disk X duplicated on all disks in the array?
  2. Will a disk with bad blocks be indicated differently in /proc/mdstat ?!
  3. If more than two disks in a raid 6 array has bad blocks, is it possible to set a threshold for how many bad blocks is tolerable?!
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I have found Design notes for a bad-block list in md/raid. – dma_k Mar 10 '15 at 18:19
up vote 0 down vote accepted
  1. No
  2. Don't know but hope so. You can use --examine-badblocks find out (besides dmesg). See
  3. No.
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Can you add some additional info from the link. Link only answers are an issue since links can break. – Dave M Oct 31 '13 at 15:32

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