Re: [smartmontools-support] smartd vs. smartctl: Fusion MPT SAS/SATA RAID controller and physical disks (/dev/sg*)

[Wolfram S. <li...@wo...>]

* Douglas Gilbert <do...@to...> [2008-02-16 17:13]:
> Bruce Allen wrote:
>> Christian, Doug,
>> Could one of you have a look at this?  The report is that 'smartctl -d 
>> sat' works correctly but smartd with '-d sat' in /etc/smartd.conf does NOT 
>> work correctly.  I would like to sort this out before doing a new release.
>> Cheers,
>>      Bruce
>> On Tue, 5 Feb 2008, Wolfram Schlich wrote:
>>> * Bruce Allen <ba...@gr...> [2008-02-05 18:21]:
>>>> And perhaps check against current CVS HEAD?
>>>
>>> Done -- current CVS HEAD has the same behaviour.
>
> I connected a SATA disk (Seagate 7200.7) to a MPT SAS
> Fusion HBA and smartd worked for me with:
>    /dev/sda -d sat -a
> in /etc/smartd.conf (and DEVICESCAN commented out).
> That is with lk 2.6.24-rc6 and a version of smartmontools
> near the CVS head.
>
> I know that Dell's Perc 5i is a Megaraid card (rather than
> MPT SAS fusion, both from LSI). Since a RAID is involved
> the Perc 6i may be blocking the SCSI ATA PASS_THROUGH
> command used by '-d sat'. If you could send a SCSI WRITE
> command, or the ATA equivalent via the ATA PASS_THROUGH
> command then the RAID integrity could be compromised.
>
> This looks like a specialized bug, associated with the
> Perc 6i to me, rather than a general failure in
> smartd. [smartd make need tweaking, or perhaps LSI need
> to be more selective in what they allow through /dev/sg1).

The controller I tried with is NOT a PERC one, it is a
MPT SAS fusion one, called SAS6/iR (NOT PERC6!) at Dell.

As I said, it worked fine with smartctl, but not with smartd.
-- 
Regards,
Wolfram Schlich <wsc...@ge...>
Gentoo Linux * http://dev.gentoo.org/~wschlich/