Date: Mon, 08 Feb 2010 01:27:19 +0900 From: Stephane LAPIE <stephane.lapie@darkbsd.org> To: Torsten Kersandt <torsten@cnc-london.net> Cc: freebsd-hardware@freebsd.org Subject: Re: [zfs][hardware] Reproducible kernel panic in 8.0-STABLE Message-ID: <4B6EE9E7.9010501@darkbsd.org> In-Reply-To: <024101caa7ee$ab9eda50$02dc8ef0$@net> References: <20100207120023.05CD91065775@hub.freebsd.org> <024101caa7ee$ab9eda50$02dc8ef0$@net>
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This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enig49D61561A0D51C75B4C9124D Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: quoted-printable Torsten Kersandt wrote: > Hi Stephane >=20 > I currently use some excellent cards from Supermicro, and these seem to= be > the only 8 port PCIx and PCI-E available on the market running on=20 > The marvel chipset. > I would not use them for RAID but as SATA/SAS controllers very good. >=20 > Supermicro 8 Port SATA 2 Card (PCI/PCI-X) AOC-SAT2-MV8 > Supermicro AOC-SASLP-MV8, 8-Port (PCI-E)SAS/SATA Card >=20 > For about =A380.00/USD130.00 each - not bad >=20 > Regards > Torsten Actually, I do have both cards. I have been using them for one year now, and I can say this about both=20 of them : -> Supermicro 8 Port SATA 2 Card (PCI/PCI-X) AOC-SAT2-MV8 This is what I am using right now, I have a server with two of them.=20 It's chip is a Marvell MV88SX6081 8-port SATA II PCI-X Controller. I had virtually nothing to say against this card while using it under=20 FreeBSD up to 7.2-STABLE, but it seems drive hotplug handling is truly=20 lacking in 8.X, though whether this is a problem on the card's side or=20 on some recent change in ATA handling on FreeBSD's side is lost on me. But the current reality is that I am getting random kernel panics for=20 what seems to be ATA queue handling woes. Also, re-detection of drives in BIOS seems to be utterly buggy, so the=20 above hotplug handling problem might be related to the hardware itself. -> Supermicro AOC-SASLP-MV8, 8-Port (PCI-E)SAS/SATA Card This controller does not have a driver for FreeBSD, as of 8.0-STABLE,=20 and documentation for it is not public. I have asked sam@ for advice and = help on obtaining documentation. As an additional comment : Plus, I tried it under Linux, and the mvsas driver available for it is=20 less than satisfying. Drive disconnection/hiccups handling is severely=20 lacking, and I busted several mdadm RAIDs while using this card in test=20 machines, upon "going over the speed limit" and losing all plugged in=20 drives until next reboot. (To be fair, the SVN version of the mvsas driver is a little more=20 stable, but in a "I will only disconnect one drive at a time, so if you=20 see one drive going down, you'll have the time to shut down the RAID=20 array" way.) (As a result, I couldn't exactly say I am satisfied with Marvell on=20 FreeBSD so far. I am seriously considering going for Areca.) Best regards, --=20 Stephane LAPIE, EPITA SRS, Promo 2005 "Even when they have digital readouts, I can't understand them." --MegaTokyo --------------enig49D61561A0D51C75B4C9124D Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iEYEARECAAYFAktu6esACgkQ24Ql8u6TF2NX5ACghFSM8xRk26yUVeaK2FeehoEE LKsAn2SLG14eesqFjqgepZkwf7om3e/q =Wp1O -----END PGP SIGNATURE----- --------------enig49D61561A0D51C75B4C9124D--
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