Date: Wed, 15 Feb 2012 11:57:33 +0100 From: Harald Schmalzbauer <h.schmalzbauer@omnilan.de> To: Jeremy Chadwick <freebsd@jdc.parodius.com> Cc: Tom Evans <tevans.uk@googlemail.com>, freebsd-stable@freebsd.org, Oscar Prieto <oscarmpp@googlemail.com>, Martin Sugioarto <martin@sugioarto.com>, Claudius Herder <claudius@ambtec.de> Subject: Re: problems with AHCI on FreeBSD 8.2 Message-ID: <4F3B8F9D.6070907@omnilan.de> In-Reply-To: <20120215104205.GA19734@icarus.home.lan> References: <20120214100513.GA94501@icarus.home.lan> <20120214135435.GQ2010@equilibrium.bsdes.net> <20120214141601.GA98986@icarus.home.lan> <4F3A83DE.3000200@ambtec.de> <20120214165029.GA1852@icarus.home.lan> <4F3A971F.9040407@omnilan.de> <20120214192319.44ff7aff@zelda.sugioarto.com> <CAK9wqRpjRXtkBqL%2BgX5gY3foqz-O5mT-qg7Z=_t2m=Q3rZizJg@mail.gmail.com> <20120214195255.GA5064@icarus.home.lan> <CAFHbX1KY9vAPFXiEQXv=M%2BqQQg17TU8BUc_P8M9FiB-gJ0FpvQ@mail.gmail.com> <20120215104205.GA19734@icarus.home.lan>
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This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enig1576C785B7FE08F3CAF7759E Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable schrieb Jeremy Chadwick am 15.02.2012 11:42 (localtime): > On Wed, Feb 15, 2012 at 10:19:37AM +0000, Tom Evans wrote: >> On Tue, Feb 14, 2012 at 7:52 PM, Jeremy Chadwick >> <freebsd@jdc.parodius.com> wrote: >>> On Tue, Feb 14, 2012 at 08:31:23PM +0100, Oscar Prieto wrote: >>>> I used to had tons of ahci errors in my 4 disk raidz1 worth of >>>> HD154UIs when the rig was built a year ago or so (with 8.0 Release),= >>>> but they dissapeared after tuning ZFS. >>>> >>>> Sadly i also got a new timeout days ago followed with smartcl erros = i >>>> still keep unchecked but i guess they cold be legit, i still have to= >>>> test/swap cables and give it a try. >> Interesting. I have 9 SAMSUNG HD154UI 1AG01118 in my raidz setup, >> haven't had a problem with any of them yet (touch wood). >> >>> Further details which pertain to Samsung drives: >>> >>> In your case, you run smartd(8), which periodically hits the drive wi= th >>> SMART requests, pulling attribute data down and parsing it. ??I belie= ve >>> your model is fine for this, but for similar Samsung models, I must >>> strongly advise against this. ??There are well-documented problems wi= th >>> Samsung firmwares and SMART behaviour which can result in data loss (= yes >>> you read that right). ??Please see smartmontools' Wiki page on the ma= tter >>> for full details. ??Just make sure you're running a fixed firmware: >>> >>> http://sourceforge.net/apps/trac/smartmontools/wiki/SamsungF4EGBadBlo= cks >>> >> Yikes, I have just this week installed a HD204UI. From that page, >> drives manufactured after December 2010 should not be affected, which >> is fortunate as the linked firmware page doesn't seem to exist >> anymore, Samsung no longer seem to offer support for their drives and >> point you at Seagate, whose site (of course!) only has downloads for >> current Seagate drives. >> >> >> Hmm reading later on in the thread there is a patch to mark certain >> drives as having flaky NCQ - in the patch it is for the SAMSUNG >> HD154UI. As I mentioned before, I have 9 SAMSUNG HD154UI, all of which= >> use ahci(4) and NCQ, and all work perfectly, no timeouts. This is >> using 9-STABLE. >> >> I suspect that there may be more going on than 'flaky NCQ', and that >> perhaps disabling NCQ masks the real issue. > It could simply be a firmware bug in the drive, which is what some > others have eluded to (and I'm in agreement with). I would love to say= > "compare firmware versions on your drives", except there is real > in-the-field proof that firmware version strings often do not get > updated/changed between firmwares (at least in the case of some Seagate= > and Western Digital disks). Furthermore, NCQ can "play differently" wi= th > different AHCI controllers. > > That said, the disks / firmware versions mentioned by people involved i= n > this thread / referenced threads are: > > * Victor Balada Diaz -- SAMSUNG HD154UI, firmware 1AG01118 > * Claudius Herder -- SAMSUNG HD753LJ, firmware 1AA01118 > * Oscar Prieto -- SAMSUNG HD154UI, firmware 1AG01118 > - NOTE: In Oscar's case, his drives exhibit other problems. I > would provide a link but the web archive for freebsd-stable does > not show my mail which contains analysis of the situation > * Harald Schmalzbauer -- not provided, but hints at Samsung EG drives -- SAMSUNG HD154UI, firmware 1AG01118 I still have them for "outsourcing" in one server, where they idle all the time. Thanks, -Harry --------------enig1576C785B7FE08F3CAF7759E Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.18 (FreeBSD) iEYEARECAAYFAk87j50ACgkQLDqVQ9VXb8jfvACfevOKSoyJ+X6zfC1O4P9O9w0k 9QYAn246EXO3a01NlbZvhhKzIemcG612 =g2ZR -----END PGP SIGNATURE----- --------------enig1576C785B7FE08F3CAF7759E--
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