Date: Sat, 20 Sep 2014 00:43:46 +0100 From: "Steven Hartland" <killing@multiplay.co.uk> To: "Karl Denninger" <karl@denninger.net>, <freebsd-stable@freebsd.org> Subject: Re: getting to 4K disk blocks in ZFS Message-ID: <BA7CD0B47D5F47159BF73FB196563166@multiplay.co.uk> References: <540FF3C4.6010305@ish.com.au> <A0A549F7A4094F519A3660697AB4983F@multiplay.co.uk> <54114029.3060507@FreeBSD.org> <2128347.Ah5i0RTCvp@overcee.wemm.org> <541230F1.3060402@digiware.nl> <7D0869A9-C114-4C4F-877A-3FB26AD7737D@scsiguy.com> <607F83CE25104CE09C74935BA9E26485@multiplay.co.uk> <541CBD5B.8050603@denninger.net>
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----- Original Message ----- From: "Karl Denninger" <karl@denninger.net> > >> I'm surprised that we have to constantly add quirks. Are these > >> drives really > >> failing to report their ata params correctly? Is there a reason we > >> don't > >> currently utilize the ata params data (which is already fetched for > >> trim/unmap > >> detection) to also set lbppbe (logical block per physical block > >> exponent) and > >> lalba (lowest aligned lba)? We may find that many of the existing > >> quirks are > >> unnecessary if we fix the probe code. > > > > On the contary I've not found a single drive which reports 4k sectors > > on its > > own, every single one that I've seen report 4k is because we've added a > > quirk for it :( > > > > > Where is Smartctl getting it from? > > smartctl -i /dev/da2 > smartctl 6.3 2014-07-26 r3976 [FreeBSD 10.1-BETA1 amd64] (local build) > Copyright (C) 2002-14, Bruce Allen, Christian Franke, www.smartmontools.org > > === START OF INFORMATION SECTION === > Device Model: HGST HDN724040ALE640 > Serial Number: PK2334PCG6NA0B > LU WWN Device Id: 5 000cca 24cc30684 > Firmware Version: MJAOA5E0 > User Capacity: 4,000,787,030,016 bytes [4.00 TB] > Sector Sizes: 512 bytes logical, 4096 bytes physical > Rotation Rate: 7200 rpm > Form Factor: 3.5 inches > Device is: Not in smartctl database [for details use: -P showall] > ATA Version is: ATA8-ACS T13/1699-D revision 4 > SATA Version is: SATA 3.0, 6.0 Gb/s (current: 6.0 Gb/s) > Local Time is: Fri Sep 19 18:33:16 2014 CDT > SMART support is: Available - device has SMART capability. > SMART support is: Enabled > > It's not coming from a database, as Smartctl doesn't know about these > (yet); they're too new. Exception to prove the rule? What to "camcontrol identify da2" report? Regards Steve
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