make kernel ignore broken SATA disk

[Stefan Bethke]

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.


Stefan

--
Stefan Bethke <stb at lassitu.de>   Fon +49 151 14070811

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