Pim Zandbergen wrote:
> Is SMART support available for SATA drives in SAS enclosures?
>
> I'm testing this setup
>
> LSI Logic SAS3800X PCI-X SAS controller (mptsas driver)
> Promise V-Trak J300S SAS/SATA enclosure/expander
> 12x Seagate ST3500630NS
> Linux kernel 2.6.21.1 x86_64
> smartmontools-5.37-1.1.fc6 from Fedora Core 6
>
> "smartctl -i -d sat /dev/sdc" gives me
>
> Smartctl: Device Read Identity Failed
I presume /dev/sdc is an actual disk rather than a
RAID device made up of several disks. The SAT standard
(and smartmontools) don't have a general way of
addressing individual disks behind RAID infrastructure.
For recent versions of smartmontools version 5.37 and
MPT Fusion SAS HBAs this should work if /dev/sdc is
a SATA disk. Your HBA may need a firmware upgrade.
You might fetch sg3_utils version 1.24 and try:
sg_sat_identify /dev/sdc
That needs to work before smartctl has a hope.
> Same with "-d ata".
>
> If I treat the disk as SCSI ("-d scsi"), the command
> will not fail, but wil only retrieve the serial number.
With MPT Fusion SAS hardware (that I have seen) the SAT
layer is in the HBA firmware. Only later versions of the
firmware support the SCSI ATA PASS-THROUGH command.
Doug Gilbert
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