@Mike/Robie: Actually the "uas: Always apply US_FL_NO_ATA_1X quirk to Seagate devices" patch to the kernel is (part of) the cause of the current smartmontool failure rather than a fix for it.
The underlying problem is that most Seagate drive enclosures do not properly handle SAT (= "ATA pass-through") when in UAS mode, and so the kernel now (after that patch) disables SAT for all Seagate enclosures when UAS is in use. That change allows those enclosures to work okay in UAS mode for normal data access (with the associated increase in performance) ... but since Smartmontools and other utilities (e.g. "hdparm") require SAT to work, the change breaks their functionality for those devices. The current workaround is to use the kernel quirks to disable UAS for a particular device, so that the kernel falls back to the old usb-storage mode instead; this lets SAT work again (and thus Smartmontools, etc. function properly), but only at the expense of losing UAS performance for normal data access. So in the long run it would be ideal for the kernel to have some way to more dynamically deal with these sorts of buggy devices (i.e. switching modes temporarily to allow SAT to work for special operations such as Smartmontools but use UAT most of the time)... but I haven't run across any discussion about such a patch anywhere, so it seems like people with these devices will be stuck with having to choose between SAT or UAS for the time being. Anyway, there's now a Smartmontools Wiki page devoted to this specific topic: https://www.smartmontools.org/wiki/SAT-with-UAS-Linux . ** Summary changed: - Smart data works on kernel 4.13 but not on 4.15 + for Seagate USB drive enclosures, SAT (e.g. smartmontools) works on kernel 4.13 but not on 4.15 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1810215 Title: for Seagate USB drive enclosures, SAT (e.g. smartmontools) works on kernel 4.13 but not on 4.15 Status in linux package in Ubuntu: Confirmed Bug description: smartctl -d sat -i /dev/sda work on 16.04 kernel 4.13 but on 4.15. Here is data from 16.04 root@server:~# uname -a Linux server 4.13.0-45-generic #50~16.04.1-Ubuntu SMP Wed May 30 11:18:27 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux root@server:~# lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 16.04.5 LTS Release: 16.04 Codename: xenial root@server:~# smartctl -d sat -i /dev/sda smartctl 6.5 2016-01-24 r4214 [x86_64-linux-4.13.0-45-generic] (local build) Copyright (C) 2002-16, Bruce Allen, Christian Franke, www.smartmontools.org === START OF INFORMATION SECTION === Device Model: ST8000DM004-2CX188 Serial Number: ZCT07YN6 LU WWN Device Id: 5 000c50 0b1f2a4d2 Firmware Version: 0001 User Capacity: 8,001,563,222,016 bytes [8.00 TB] Sector Sizes: 512 bytes logical, 4096 bytes physical Rotation Rate: 5425 rpm Form Factor: 3.5 inches Device is: Not in smartctl database [for details use: -P showall] ATA Version is: ACS-3 T13/2161-D revision 5 SATA Version is: SATA 3.1, 6.0 Gb/s (current: 6.0 Gb/s) Local Time is: Tue Jan 1 16:57:48 2019 EST SMART support is: Available - device has SMART capability. SMART support is: Enabled root@server:~# here is data from 18.04:root@mike-desktop:/tmp# uname -a Linux mike-desktop 4.15.0-36-generic #39-Ubuntu SMP Mon Sep 24 16:19:09 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux root@mike-desktop:/tmp# lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 18.04.1 LTS Release: 18.04 Codename: bionic root@mike-desktop:/tmp# smartctl -d sat -i /dev/sdd smartctl 6.6 2016-05-31 r4324 [x86_64-linux-4.15.0-36-generic] (local build) Copyright (C) 2002-16, Bruce Allen, Christian Franke, www.smartmontools.org Read Device Identity failed: scsi error unsupported field in scsi command A mandatory SMART command failed: exiting. To continue, add one or more '-T permissive' options. dmesg on 18.04 showing drive is connected /dev/sdd: [6041017.984544] usb 3-2.4: new SuperSpeed USB device number 6 using xhci_hcd [6041018.009417] usb 3-2.4: New USB device found, idVendor=0bc2, idProduct=331a [6041018.009424] usb 3-2.4: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [6041018.009428] usb 3-2.4: Product: Expansion Desk [6041018.009432] usb 3-2.4: Manufacturer: Seagate [6041018.009435] usb 3-2.4: SerialNumber: NAAA7HWG [6041018.015808] scsi host5: uas [6041018.016527] scsi 5:0:0:0: Direct-Access Seagate Expansion Desk 0915 PQ: 0 ANSI: 6 [6041018.017645] sd 5:0:0:0: Attached scsi generic sg3 type 0 [6041030.357108] sd 5:0:0:0: [sdd] 15628053167 512-byte logical blocks: (8.00 TB/7.28 TiB) [6041030.357112] sd 5:0:0:0: [sdd] 4096-byte physical blocks [6041030.357265] sd 5:0:0:0: [sdd] Write Protect is off [6041030.357268] sd 5:0:0:0: [sdd] Mode Sense: 53 00 00 08 [6041030.357562] sd 5:0:0:0: [sdd] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA [6041030.493932] sdd: sdd1 sdd9 [6041030.495310] sd 5:0:0:0: [sdd] Attached SCSI disk ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: smartmontools 6.5+svn4324-1 ProcVersionSignature: Ubuntu 4.15.0-36.39-generic 4.15.18 Uname: Linux 4.15.0-36-generic x86_64 NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair ApportVersion: 2.20.9-0ubuntu7.5 Architecture: amd64 Date: Tue Jan 1 16:53:16 2019 InstallationDate: Installed on 2018-02-23 (312 days ago) InstallationMedia: Ubuntu-GNOME 16.04.3 LTS "Xenial Xerus" - Release amd64 (20170801) ProcEnviron: TERM=xterm-256color PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: smartmontools UpgradeStatus: Upgraded to bionic on 2018-10-21 (72 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1810215/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
