[svlug] smartctl : strange behavior

Karen Shaeffer shaeffer at neuralscape.com
Sat Oct 17 12:41:02 PDT 2015

On Sat, Oct 17, 2015 at 11:53:12AM -0700, Lister wrote:
> On 10/17/2015 09:03 AM, kevin dankwardt wrote:
> > Perhaps this will help. Of course it may not be /dev/sdb.
> > 
> > |sudo smartctl -d sat --all /dev/sdb
> > sudo smartctl -d sat,12 --all /dev/sdb|
> Tried that. No difference
> [1998]$ lsusb | grep -i seagate
> Bus 002 Device 006: ID 0bc2:3312 Seagate RSS LLC
> [1999]$ ls /dev/disk/by-id/usb-Seagate_Expansion_Desk_2HC015KJ-0\:0 -l
> 0 lrwxrwxrwx 1 root root 9 Oct 17 10:54
> /dev/disk/by-id/usb-Seagate_Expansion_Desk_2HC015KJ-0:0 -> ../../sdc
> [2001]$ sudo smartctl -d sat -i !1999:1
> sudo smartctl -d sat -i
> /dev/disk/by-id/usb-Seagate_Expansion_Desk_2HC015KJ-0\:0
> smartctl 6.4 2014-10-07 r4002 [x86_64-linux-3.19.0-30-generic] (local build)
> Copyright (C) 2002-14, 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.
> Same for -d sat,12 and -d sat,16
> What puzzles me is that it works well with debian 8.1. I did a little
> more experiment -- I booted debian 8.1, mounted the ubuntu 15.04 root
> file system and chrooted (after mound binding /proc, sys and /dev). That
> is, I tried running ubuntu binaries with a debian kernel. To my
> surprise, it was successful in getting the smart data.
> I think the problem lies with ubuntu kernel or system init sequence. I
> don't know how to run a debian kernel on ubuntu (the dependencies fail
> ...etc.)
> Any suggestions on how to run a debian kernel on ubuntu distro (or
> ubuntu kernel on debian?)
> Thanks
> Om.

Hi Om,
Good diagnosis. This is highly likely to be related to the different kernel
versions and or patches and possibly even the configuration. Ubuntu ought to
surely consider this a bug. And they ought to be willing to help you. Have
you filed a bug? It might even be related to systemd.

Good luck. Out of time, but it is an interesting problem.

Adapt and thrive,
Karen Shaeffer                 Be aware: If you see an obstacle in your path,
Neuralscape Services           that obstacle is your path.        Zen proverb

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