Date: Sun, 12 Apr 2020 10:53:24 -0600 From: Ian Lepore <ian@freebsd.org> To: Stefan Bethke <stb@lassitu.de>, freebsd-stable <freebsd-stable@freebsd.org> Subject: Re: make kernel ignore broken SATA disk Message-ID: <36793c9efb905968508e94690b59d926f30af36b.camel@freebsd.org> In-Reply-To: <A33629CA-63EC-45AA-AB06-09B003BBB0A6@lassitu.de> References: <A33629CA-63EC-45AA-AB06-09B003BBB0A6@lassitu.de>
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On Sun, 2020-04-12 at 16:37 +0200, 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. > > The the loader prompt (or in loader.conf without 'set'): set hint.ada.1.disabled=1 -- Ian
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