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Date:      Wed, 23 Jan 2019 08:15:46 +0100
From:      Borja Marcos <borjam@sarenet.es>
To:        andy thomas <andy@time-domain.co.uk>
Cc:        Steven Hartland <killing@multiplay.co.uk>, freebsd-fs <freebsd-fs@freebsd.org>
Subject:   Re: ZFS on Hardware RAID
Message-ID:  <6E23ED3B-B163-40E5-A173-14EE47E00E5A@sarenet.es>
In-Reply-To: <alpine.BSF.2.21.1901221349090.31758@mail0.time-domain.co.uk>
References:  <1180280695.63420.1547910313494.JavaMail.zimbra@gausus.net> <92646202.63422.1547910433715.JavaMail.zimbra@gausus.net> <CAOeNLurgn-ep1e=Lq9kgxXK%2By5xqq4ULnudKZAbye59Ys7q96Q@mail.gmail.com> <alpine.BSF.2.21.1901200834470.12592@mail0.time-domain.co.uk> <1691666278.63816.1547976245836.JavaMail.zimbra@gausus.net> <alpine.BSF.2.21.1901200930550.12592@mail0.time-domain.co.uk> <CAMdBLfQvF7mXriwAvu-h5BaXBNhb_8VPRRfDmeM0u1NGoyWY_g@mail.gmail.com> <92746659-4B3F-415C-BB6A-6C99837AFAF2@sarenet.es> <335e44ec-7c76-8dbd-f587-46e6a9266efc@multiplay.co.uk> <A593D329-3526-4B5A-BCEF-7C17FA5FFA49@sarenet.es> <alpine.BSF.2.21.1901221349090.31758@mail0.time-domain.co.uk>

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> On 22 Jan 2019, at 14:55, andy thomas <andy@time-domain.co.uk> wrote:
>=20
> On Tue, 22 Jan 2019, Borja Marcos wrote:
>=20
> <snip>
>=20
>> Currently you can use hw.mfi.allow_cam_disk_passthrough tunable to =
achieve the same effect without ugly tinkering.
>=20
> The 'hw.mfi.allow_cam_disk_passthrough' tunable does not seem to be =
recognised if I add it to my /boot/device.hints file (this is on FreeBSD =
10.3 with PERC 5/i controller). If I try to use sysctl to enable it, I =
get the error message:
>=20
> 	sysctl: unknown oid 'hw.mfi.allow_cam_disk_passthrough'
>=20
> Am I doing something wrong?

My fault. You need to load the CAM passthrough driver, mfip along mfi.

mfip should recognize it.

% fgrep -H passthrough *c
mfi_cam.c:SYSCTL_INT(_hw_mfi, OID_AUTO, allow_cam_disk_passthrough, =
CTLFLAG_RDTUN,

My apologies, been a while!

By the way, some of these =E2=80=9Cpure raid=E2=80=9D cards can be cross =
flashed to be plain HBAs but it=E2=80=99s a risky procedure. I bricked =
one or two.





Borja.




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