Date: Fri, 15 Apr 2016 07:22:51 -0600 From: Warner Losh <imp@bsdimp.com> To: Tommi Pernila <tommi.pernila@iki.fi> Cc: Steven Hartland <killing@multiplay.co.uk>, "freebsd-current@freebsd.org" <freebsd-current@freebsd.org> Subject: Re: Samsung SSD TRIM [Was: Heads up] Message-ID: <E3D8FA38-1B07-4526-9BBD-AF727D81C6F6@bsdimp.com> In-Reply-To: <CABHD1wS2ST1QWU8upS3Ua52NXcD6n4cN_AF%2B-_yvoLb93N_6TA@mail.gmail.com> References: <CANCZdfpnYnVrvhNagYUT9RhAuC1AMCrxh=GCt8RKT0bqxuJybw@mail.gmail.com> <alpine.BSF.2.20.1604142154240.8359@wonkity.com> <CANCZdfqEWDLrHndKf8ZND1mM7spK9cq%2BnfnA79EVEaSj-MJfFA@mail.gmail.com> <57109CB7.3020204@FreeBSD.org> <20160415081130.GH2282@home.opsec.eu> <5710CE6F.6010408@multiplay.co.uk> <CABHD1wS2ST1QWU8upS3Ua52NXcD6n4cN_AF%2B-_yvoLb93N_6TA@mail.gmail.com>
next in thread | previous in thread | raw e-mail | index | archive | help
--Apple-Mail=_EFAFFF2C-729D-4DAC-A46B-4747675A365B Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 > On Apr 15, 2016, at 7:14 AM, Tommi Pernila <tommi.pernila@iki.fi> = wrote: >=20 > Hi, >=20 > On Friday, 15 April 2016, Steven Hartland <killing@multiplay.co.uk> = wrote: >=20 >> On 15/04/2016 09:11, Kurt Jaeger wrote: >>=20 >>> Hi! >>>=20 >>> avg wrote: >>>=20 >>>> For what it's worth, I have been using the following SSDs since >>>> September of 2015 : >>>>=20 >>>> ada2: <Samsung SSD 850 EVO 120GB EMT01B6Q> ACS-2 ATA SATA 3.x = device >>>> ada3: <Samsung SSD 850 EVO 120GB EMT01B6Q> ACS-2 ATA SATA 3.x = device >>>>=20 >>> I have one in use with zfs and trim: >>>=20 >>> ada1: <Samsung SSD 840 EVO 250GB EXT0BB6Q> ACS-2 ATA SATA 3.x device >>>=20 >>> Works as my ports build hosts, and is fine as far as I can see. >>>=20 >>> Prior to Warners commit there was no NCQ TRIM support in FreeBSD, so >> while it was working with standard non-NCQ TRIM (and I can = corroborate that >> as we use the 840's and 850's all over with ZFS with TRIM enabled) = its >> possible that it could cause issues when NCQ TRIM comes into play. >>=20 >> =46rom what I read when this issue first came to light, I believe the = actual >> issue was a Linux kernel bug not a FW bug in Samsung drives that = caused the >> corruption. This is the thread which details said issue: >> http://www.spinics.net/lists/raid/msg49440.html >>=20 >>=20 > Here is a link to the commit that fixed the Linux kernel bug. > https://git. > = kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=3Df3f5da624= e0a891c34d8cd513c57f1d9b0c7dadc >=20 > Mounting a Samsung SSD with a linux kernel with trim enabled without = this > commit can cause issues. Right, that bug allocates space for the TRIM message to be queued. = FreeBSD already does that, so that=E2=80=99s not going to be an issue. This was = the issue I referred to in a prior message. Both the Samsung 840 and 850 are black listed as far as NCQ trim are = concerned. I=E2=80=99ve had other people that have tested them w/o my blacklisted = entries, and there are issues at least with the 840 that are firmware related. Warner --Apple-Mail=_EFAFFF2C-729D-4DAC-A46B-4747675A365B Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename=signature.asc Content-Type: application/pgp-signature; name=signature.asc Content-Description: Message signed with OpenPGP using GPGMail -----BEGIN PGP SIGNATURE----- Comment: GPGTools - https://gpgtools.org iQIcBAEBCgAGBQJXEOsrAAoJEGwc0Sh9sBEAhgoQAOa5BxRpUZrfmmMWyh9sAuBR ubXk+mpn9kZDzbuxDxDJgZJisFAaEs2RCcxr4IJNeU7BD41vDTcVBkn7qwYqrqYx fz98TPsqVxJAjzAcAyK3VpFAOueTJlCwACuKYqjUYcYXrvicxTDixS1Cldm1H6Rp r0X2/eT/ub5aMTTtVqPt8P35dgsbRg9Q8I9tHPhsDwniKmS9QXPtC2KeyKwl+/b2 suWr9BGOabPHm8AZSOo63odR70dz5mYpoHtqak5S8obHhC0BNtDD+BGOHiGnep4U 0K7HIds/KcB505HWdk5pvG0mwW5FGjBoagB3mnOiSbXE5Ho2HV6JLqNLm4XEvZVn BW+2TSYZiJ8oKMfw5mplbe/yydaU8kasAYrnALmhl5lv6MDF9N6A5Uax+3TFCw3Z rb+X3hXWv+rQO29mUKVVfoZOWXMwSkmeGVg7a+OZVKgHRBb0abYb/w1E++7oRRGu ZA/FVrLgq8gYo+CcGY7GD+8xY1xW11gGciEnw2ynrLAji3qYccR2kL02q3E/fH9U OWyatoAl5alKdsN+DY16juBPAu+MD3maE4aMwhZjg4dyQaJlKHoZS59SLri6eHEp 8cyf6f4tGqM2gVL+O7BFRMC2fy4Kn4mIk3w95W/C4qT9rj0uuEDhSIguKvrzU8I7 dQKWcCqi80nGmFQVwZ8+ =fKwI -----END PGP SIGNATURE----- --Apple-Mail=_EFAFFF2C-729D-4DAC-A46B-4747675A365B--
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?E3D8FA38-1B07-4526-9BBD-AF727D81C6F6>