• Douglas Gilbert's avatar
    [SCSI] permit READ DEFECT DATA in block/scsi_ioctl · 942fc2fb
    Douglas Gilbert authored
    The soon to be released smartmontools 5.34 uses the
    READ DEFECT DATA command on SCSI disks. A disk that
    has defect list entries (or worse, an increasing number
    of them) is at risk.
    
    Currently the first invocation of smartctl causes this:
       scsi: unknown opcode 0x37
    message to appear the console and in the log.
    
    The READ DEFECT DATA SCSI command does not change
    the state of a disk. Its opcode (0x37) is valid for
    SBC devices (e.g. disks) and SMC-2 devices (media
    changers) where it is called INITIALIZE STATUS ELEMENT
    WITH RANGE and again doesn't change the external state
    of the device.
    
    Changelog:
      - mark SCSI opcode 0x37 (READ DEFECT DATA) as
        safe_for_read
    Signed-off-by: default avatarDouglas Gilbert <dougg@torque.net>
    Acked-by: default avatarJens Axboe <axboe@suse.de>
    Signed-off-by: default avatarJames Bottomley <James.Bottomley@SteelEye.com>
    942fc2fb
scsi_ioctl.c 13.9 KB