Your message dated Sun, 04 Feb 2018 23:11:31 +0100
with message-id <>
and subject line Re: Bug#889146: AW:
has caused the Debian Bug report #889146,
regarding smartctl - Read Device Identity failed
to be marked as done.

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Package: linux-image-3.2.0-5-amd64
Version: 3.2.96-3

I updated my wheezy kernel because of the meltdown patch.

After the update two commands are not working anymore:

1.) tw-cli show
2.) smartctl -a -d 3ware,0 /dev/twa0

I have a 3ware raid controller with 6 disks and these disks are configured as 
PVs in my LVM:
The LVM can see the disks behind the raid controller (Model 9500S-8), only the 
above cli tools are not working anymore.

Useful output:

Distributor ID: Debian
Description:    Debian GNU/Linux 7.11 (wheezy)
Release:        7.11
Codename:       wheezy
test:~# dmesg -T | grep -m 1 twa
[Fr Feb  2 15:41:28 2018] ioctl32(smartctl:21814): Unknown cmd fd(3) 
cmd(00000108){t:01;sz:0} arg(ffb5ea9c) on /dev/twa0
test:~# tw-cli show
Error: (CLI:094) Invalid OS architecture for the application.
test:~# smartctl -a -d 3ware,0 /dev/twa0
smartctl 6.4 2014-09-29 r3990 [x86_64-linux-3.2.0-5-amd64] (local build)
Copyright (C) 2002-14, Bruce Allen, Christian Franke,

Read Device Identity failed: Input/output error

A mandatory SMART command failed: exiting. To continue, add one or more '-T 
permissive' options.
test:~# lspci -v
03:03.0 RAID bus controller: 3ware Inc 9xxx-series SATA-RAID
        Subsystem: 3ware Inc 9xxx-series SATA-RAID
        Flags: bus master, 66MHz, medium devsel, latency 72, IRQ 24
        I/O ports at 2000 [size=256]
        Memory at dd300000 (64-bit, non-prefetchable) [size=256]
        Memory at df800000 (64-bit, prefetchable) [size=8M]
        [virtual] Expansion ROM at dd310000 [disabled] [size=64K]
        Capabilities: [48] Power Management version 2
        Kernel driver in use: 3w-9xxx

I hope someone can help me to find the cause.

Best regards

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--- Begin Message ---
On Sun, 2018-02-04 at 21:03 +0000, Masi Osmani wrote:
> Hi Ben,
> thank you for your fast answer and the very professional completion
> of my inquiry!
> Finally i found the mistake, i installed a 64bit kernel on a 32 bit
> OS.

This combination should generally work (and I used it for many years),
but unfortunately the 3w-9xxx driver doesn't support it.

Note that Meltdown has *not* been fixed in 32-bit (i386) kernels.


Ben Hutchings
The generation of random numbers is too important to be left to chance.
                                                       - Robert Coveyou

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