Date: Wed, 23 Sep 2015 18:48:12 +0100 From: Matthew Seaman <matthew@FreeBSD.org> To: freebsd-fs@freebsd.org Subject: Re: Switching from MFI to MRSAS Message-ID: <5602E5DC.9000009@FreeBSD.org> In-Reply-To: <CAPyBAS6p_=Ld6yiis00L3GxCFgq7JwUXkvg=mzni3ZHHEC1Z3Q@mail.gmail.com> References: <CAPyBAS4-oRjrybxu81nPO1Xb0WPdYzJRoEZ3t8zjNUrxFsiZpw@mail.gmail.com> <56023C15.7080007@fuckner.net> <CAPyBAS6p_=Ld6yiis00L3GxCFgq7JwUXkvg=mzni3ZHHEC1Z3Q@mail.gmail.com>
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This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --ph7gpDH09hwMSRS3Wg0R6w6bCG9KecFBH Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: quoted-printable On 23/09/2015 16:55, Tim Gustafson wrote: > The FreeBSD hardware support page specifically says that the "mrsas" > driver will handle the Dell PERC H330 controller (which is what I > have): >=20 > https://www.freebsd.org/relnotes/CURRENT/hardware/support.html >=20 > So that's what I'm asking about. I have a newer card, which according > to the man page is supported by the mrsas driver. So my question is, > if I "flip the switch" so that the mrsas driver takes over, will > everything "just" work, or will I need to re-format my disks because > the "mfi" driver configures the disks in a way that is somehow > incompatible with the "mrsas" driver. We've a bunch of Dell machines of the H730 cards, which are (I think) the same chipset but with various additional bits like a BBU and nvram and so forth. Yes, if mfi(8) detects the controller but doesn't work (or doesn't perform) then the mrsas driver is the thing to use. It works fine as a RAID controller, but there is no equivalent of mfiutil(8) for these cards= =2E Trim support -- or the lack of it -- is apparently a feature of the firmware on Dell-branded SSD drives. Cheers, Matthew --ph7gpDH09hwMSRS3Wg0R6w6bCG9KecFBH Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG/MacGPG2 v2 iQJ8BAEBCgBmBQJWAuXiXxSAAAAAAC4AKGlzc3Vlci1mcHJAbm90YXRpb25zLm9w ZW5wZ3AuZmlmdGhob3JzZW1hbi5uZXQ2NTNBNjhCOTEzQTRFNkNGM0UxRTEzMjZC QjIzQUY1MThFMUE0MDEzAAoJELsjr1GOGkAT/fIQAJ0gS6gRIslRqZIN/53o0P6y XEBXuTdSloskPGtzca7hYXSVPq6PkmEOdY+kGyx5kjbgdOkwAKXnm3Jy7hD9/bMm xBJEke3DcxXKu7J4fXFTjswZLir7p7Oa6DuY0A/37PNF3On/OGwRhlmWtBD/prZ7 B9OGQh2AD+lw0YpQDIyMLzWnDI/TF7szZBXotcMFQ8QhOCO5ES0ZnjsP5rt4Gz7G MfJGlkqyosPbj/LCgwMCa6OlBpR+L9TfdBlfm5PzsI+mXmoEWWnk8E2B6Q9PPDAt PZDR1BdYR67QddIWWqx2ADPAR+PMcOu/BK3Ya9IzQ/rei0sgD/jlaXaag5Yo0P1g 9hT1fh1n4gRZFYy27VKQwvtL2wa/wvk680elFKhNzh+39ZT78Pj/XXcbnZ0SVnRn /HzYzALrDt6kMu6eKUJp3oaG8HdmzaV4GQGxBmwaO6xcDWZb2bq8N0EDBsTXv9El vKEbOGopn8mRylUPvtV3u8ioxuB6h2ToAwhTv2/YDPl6Tm9Y6B4tyISazqYLoQHW lki2AXSSRMxzb0zNKUL6PC7QQf1QwIw+UbNjc2Z/zqGh/zBwVdaF3iuY1xuxxnnH 5A3L8d6fmVjYFHxxwwfwSupxn6n1pdjb38fZdFF4pu+TJ0gVPUlBxNE4IILY0BGp xqTs+1IPFHhzgfFN0kI1 =NWXq -----END PGP SIGNATURE----- --ph7gpDH09hwMSRS3Wg0R6w6bCG9KecFBH--
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