Re: Feature request: Remove the badblocks list

[Roy Sigurd Karlsbakk <roy@karlsbakk.net>]

> Based in the linked page, you would need to do something like this:
> 
> 1) Create a clean array with correctly working disks
> 
> 2) Tell the underlying block device to pretend there is a read error on
> a specific sector of one disk
> 
> 3) Ask MD to replace the "bad" block device with a "good" one

Do you have a howto on 2,3?

> 4) See what happens with the BBL
> 
> 5) Various steps of reading/writing to that specific stripe, and
> document the outcome/behavior

or this - how?

> 6) Replace another drive, and document the results
> 
> Hint: there is a block device that could sit between your actual block
> device and MD, and it can "pretend" there are certain errors. The
> answers here seem to contain relevant information:
> https://stackoverflow.com/questions/1870696/simulate-a-faulty-block-device-with-read-errors
> 
> As I said, I suspect that if a reproducible error is found, then it
> should be easier to fix the bug.
> 
> OTOH, you could just remove the BBL from your arrays, and ensure you
> create new arrays without the BBL.

Anything better than just "mdadm ... --assemble --update=force-no-bbl"?

Vennlig hilsen

roy
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Roy Sigurd Karlsbakk
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