12.04.2020 21:37, Stefan Bethke wrote:

> I have a server I don't have physical access to right now, which has a broken 
> SATA disk that produces mostly errors (but not entirely).
> 
> The disk has two partitions that are part of a zpool each. I can't bring the 
> system up with this disk being online, because ZFS is trying its darndest to 
> use it.
> 
> I already renamed the GPT partitions in the hope that ZFS would not find them 
> anymore, but it does.
> 
> I can't gpart destroy -f ada1 because "device busy".
> 
> Is there a way, ideally in the loader, to tell the kernel to ignore ada1 
> and/or ahcich5? Or can I force ZFS some other way to ignore the disk? I do 
> have a spare disk I can use to replace the failed one, but I can't get the 
> machine into a state where I could even issue the zpool replace command.

It depends on the HDD controller the disk is attached to. What controller and 
driver does it have?


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