(original article)

Re: Design notes for a bad-block list in md/raid

20 May 2010, 12:23 UTC

If I'm remembering correctly, the 0.9 and 1.2 superblocks are both at the end of the partitions, so is it possible to do it by shrinking the raid a bit then stopping it and forcing creation of a new raid with exactly the same parameters (save for the superblock format) and telling it not to rebuild?

Which all sounds rather scary...

Also, is there a way to tell md to save more room for the superblock stuff (like the bad block lists or the bitmap)?

Which leads to the next question... is there a "good" size for the bitmap? I like what it does for me, so I assume a larger bitmap would lead to more granular information. So on a massive raid, having more pages might be better.

Thanks, as always.