I noticed that there is a char scsi_level in the struct scsi_device,
what does scsi_level mean?
struct scsi_device {
...
char scsi_level;
...
}
Is it SCSI revision?
If the answer is true, then I am quite curious, from the code I have
read, SCSI_2 is something special, see following function:
picked up from drivers/scsi/scsi_sysfs.c:
int scsi_sysfs_target_initialize(struct scsi_device *sdev){
/*
* If there wasn't another lun already configured at
* this target, then default this device to SCSI_2
* until we know better
*/
sdev->scsi_level = SCSI_2;
}
Why SCSI_2 could be the default value, why not SCSI_1, why not SCSI_3,
and etc.Seems SCSI_2 is distinguished from other levels,any reason for
this?
Thanks
Jason Xiao
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