Date: Thu, 23 May 2024 15:19:55 +0200 From: Marek Zarychta <zarychtam@plan-b.pwste.edu.pl> To: Peter Eriksson <pen@lysator.liu.se> Cc: FreeBSD Hackers <freebsd-hackers@freebsd.org> Subject: Re: Trying to understand CAM (and the cciss driver) Message-ID: <Zk9CewNj_X5KdcOa@plan-b.pwste.edu.pl> In-Reply-To: <087AB4C4-9CE0-4024-8E1B-4C636014C8CC@lysator.liu.se> References: <087AB4C4-9CE0-4024-8E1B-4C636014C8CC@lysator.liu.se>
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Dnia Thu, May 09, 2024 at 07:58:32PM +0200, Peter Eriksson napisa=C5=82(a): > Hi, >=20 > I=E2=80=99m trying to fix a bug in the cciss driver that has been there = =E2=80=9Cforever=E2=80=9D when using it with an HP H241 SAS HBA card.=20 > The driver works fine when all (SAS, spinning rust) drives are behaving w= ell, but when some of them are starting to go bad it often goes into spin a= nd either hangs the kernel or panics. I=E2=80=99ve been trying to add instr= umentation to it in order to pin-point the problem and have been attempting= some workarounds (like clearing cr_complete since without that hack someti= me the driver get many many non-busy repeated requests with the same =E2=80= =9Ctag=E2=80=9D and then It panics with:=20 (...) >=20 > - Any suggestions? (Probably not but I thought I=E2=80=99d ask anyway :-) >=20 Hello Peter, I have no suggestion but a question. Does the panic happen with https://reviews.freebsd.org/D25155 applied ? I am using your patch from this review with a few drives. It's handy and still builds fine on 15-CURRENT. Cheers =20 --=20 Marek Zarychta
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