Date: Fri, 15 Apr 2016 16:14:53 +0300 From: Tommi Pernila <tommi.pernila@iki.fi> To: Steven Hartland <killing@multiplay.co.uk> Cc: "freebsd-current@freebsd.org" <freebsd-current@freebsd.org> Subject: Re: Samsung SSD TRIM [Was: Heads up] Message-ID: <CABHD1wS2ST1QWU8upS3Ua52NXcD6n4cN_AF%2B-_yvoLb93N_6TA@mail.gmail.com> In-Reply-To: <5710CE6F.6010408@multiplay.co.uk> 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>
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Hi, On Friday, 15 April 2016, Steven Hartland <killing@multiplay.co.uk> wrote: > On 15/04/2016 09:11, Kurt Jaeger wrote: > >> Hi! >> >> avg wrote: >> >>> For what it's worth, I have been using the following SSDs since >>> September of 2015 : >>> >>> 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 >>> >> I have one in use with zfs and trim: >> >> ada1: <Samsung SSD 840 EVO 250GB EXT0BB6Q> ACS-2 ATA SATA 3.x device >> >> Works as my ports build hosts, and is fine as far as I can see. >> >> 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. > > From 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 > > 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=f3f5da624e0a891c34d8cd513c57f1d9b0c7dadc Mounting a Samsung SSD with a linux kernel with trim enabled without this commit can cause issues. Br, Tommi > Regards > Steve > _______________________________________________ > freebsd-current@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-current > To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org" >
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