Date: Sun, 12 Apr 2020 20:30:27 +0300 From: Slawa Olhovchenkov <slw@zxy.spb.ru> To: Stefan Bethke <stb@lassitu.de> Cc: freebsd-stable <freebsd-stable@freebsd.org> Subject: Re: make kernel ignore broken SATA disk Message-ID: <20200412173027.GK8012@zxy.spb.ru> In-Reply-To: <A9C89DFE-0A0C-4689-8C2B-81515E330FBA@lassitu.de> References: <A33629CA-63EC-45AA-AB06-09B003BBB0A6@lassitu.de> <20200412154319.GO8028@zxy.spb.ru> <9D60946A-6D81-444B-B6D0-36202B3BE5C6@lassitu.de> <20200412163104.GI8012@zxy.spb.ru> <D67DEF55-9E1B-4499-9455-E1474F5CFC26@lassitu.de> <20200412170338.GJ8012@zxy.spb.ru> <A9C89DFE-0A0C-4689-8C2B-81515E330FBA@lassitu.de>
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On Sun, Apr 12, 2020 at 07:08:06PM +0200, Stefan Bethke wrote: > Am 12.04.2020 um 19:03 schrieb Slawa Olhovchenkov <slw@zxy.spb.ru>: > > > > On Sun, Apr 12, 2020 at 06:38:10PM +0200, Stefan Bethke wrote: > > > >> > >> > >>> Am 12.04.2020 um 18:31 schrieb Slawa Olhovchenkov <slw@zxy.spb.ru>: > >>> > >>> On Sun, Apr 12, 2020 at 06:24:09PM +0200, Stefan Bethke wrote: > >>> > >>>> Am 12.04.2020 um 17:43 schrieb Slawa Olhovchenkov <slw@zxy.spb.ru>: > >>>>> > >>>>> On Sun, Apr 12, 2020 at 04:37:06PM +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. > >>>>> > >>>>> `zpool offline pool device` if you have enoght redundancy? > >>>> > >>>> I do, but the command doesn't return. Instead, I'm getting loads of sata error message. > >>> > >>> What you zpool configuration? > >> > >> This is from the working system. The identifiers are slightly different, but the structure is identical. > > > > what about `zpool detach <pool> <device>` ? > > Now I can't boot into single user mode anymore, ZFS just waits forever, and the kernel is printing an endless chain of SATA error messages. > > I really need a way to remove the broken disk before ZFS tries to access it, or a way to stop ZFS from try to access the disk. This disk only part of mirror? ZIL is OK?
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