• Kurt Garloff's avatar
    [SCSI] BLIST_ATTACH_PQ3 flags · 13f7e5ac
    Kurt Garloff authored
    Some devices report a peripheral qualifier of 3 for LUN 0; with the original
    code, we would still try a REPORT_LUNS scan (if SCSI level is >= 3 or if we
    have the BLIST_REPORTLUNS2 passed in), but NOT any sequential scan.
    Also, the device at LUN 0 (which is not connected according to the PQ) is not
    registered with the OS.
    
    Unfortunately, SANs exist that are SCSI-2 and do NOT support REPORT_LUNS, but
    report a unknown device with PQ 3 on LUN 0. We still need to scan them, and
    most probably we even need BLIST_SPARSELUN (and BLIST_LARGELUN). See the bug
    reference for an infamous example.
    
    This is patch 3/3:
    3. Implement the blacklist flag BLIST_ATTACH_PQ3 that makes the scsi
       scanning code register PQ3 devices and continues scanning; only sg
       will attach thanks to scsi_bus_match().
    Signed-off-by: default avatarKurt Garloff <garloff@suse.de>
    Signed-off-by: default avatarJames Bottomley <James.Bottomley@SteelEye.com>
    13f7e5ac
scsi_devinfo.h 1.8 KB