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    SubjectRe: AIC7xxx LUN enumeration failure and DV config failure
    > We have two transtec 5016 IDE disks/SCSI interface raid arrays
    > connected to a motherboard Adaptec AIC7902 Ultra320 SCSI adapter on
    > scsi1. Each is split in two LUNs, 2x1.4Tb for the first and 2x2Tb for
    > the second.


    > Sep 17 14:41:42 m61 kernel: scsi1:A:0:0: DV failed to configure device. Please file a bug report against this driver.
    > Sep 17 14:41:42 m61 kernel: scsi1:A:1:0: DV failed to configure device. Please file a bug report against this driver.

    In the case of SCSI-IDE RAID arrays, many of which are of questionable
    quality, this typically means that the device is not providing a valid
    echo buffer size for performing domain validation. In this case, the
    driver defaults to running at the maximum speed supported by the device,
    but also prints out a diagnostic. I plan to remove the diagnostic for
    the echo buffer issue since there seem to be lots of broken devices
    out there.

    Your RAID array only supports U160, so it only runs at that speed.
    This has everything to do with the device, and nothing to do with the
    aic79xx controller/driver.

    As to the LUN issues, as already pointed out by others, it looks like
    the report luns support in this device is broken. Perhaps the vendor
    has a firmware update available.


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