# [OmniOS-discuss] Intel C600 driver issue

Marion Hakanson hakansom at ohsu.edu
Wed Sep 17 07:12:43 UTC 2014

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    Greetings,

    I'm trying to install OmniOS 151010u onto an Intel S2600WP motherboard,
    and the OmniOS live image is not finding the boot/root drive.  This
    system is in a 4-motherboard chassis with a disk backplane on the front,
    and each of the 4 motherboards gets some drive slots on that backplane.

    In this particular case, there's a single SSD for boot/root, and while
    the motherboard includes two SATA controllers, the SSD is plumbed to
    the "difficult" one, which has two modes in the BIOS:

    (1) RSTe mode (default);  Functions in SATA pass-through mode, according
        to the BIOS blurb.  Windows would use the "iastor" driver.  In this
        mode, the device describes itself (in "prtconf -Dv" or "scanpci") as:
    	C602 chipset 4-Port SATA Storage Control Unit

    (2) ERST2 mode;  Functions like an LSI-something SAS/SATA RAID controller.
        Windows/Linux would supposedly use the "megasr" driver.  In this
        mode, the device describes itself (in "prtconf -Dv" or "scanpci") as:
    	C600/X79 series chipset 4-Port SATA Storage Control Unit

    Unfortunately, OmniOS drivers do not attach to this device.  I've tried
    some manual driver suggestions, all of which fail to attach, in either
    of the above two modes:

      update_drv -a -i '"pci8086,358f"' mpt
      update_drv -a -i '"pci8086,358f"' mega_sas
      update_drv -a -i '"pci8086,358f"' mr_sas
      update_drv -a -i '"pci8086,358f"' mpt_sas
      update_drv -a -i '"pci8086,358f"' ahci

    I've also tried pci8085,106b, which is a device-id alias listed in
    the "prtconf -Dv" output.

    Has anyone in OmniOS- or illumo-land gotten the OS to talk to this
    storage controller?  Suggestions?  Linux appears to use the "isci"
    driver for this device.

    Thanks and regards,

    Marion

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