On 08/14/2015 02:27 PM, James Smart wrote: > On 8/14/2015 2:32 AM, Hannes Reinecke wrote: >> On 08/13/2015 01:50 PM, Johannes Thumshirn wrote: >>> Export the RAW SCSI Inquiry to sysfs as binfile. This way the >>> data can be used by userlang without the need to have and ioctl or use the >>> sg_inq tool. >>> >> userland! >> > > Just be careful. There are conditions where this could be stale > data.... LUN reconfig on an array that hasn't been rescanned by > the mid layer yet is such a case. > > Any reason you didn't have the sysfs call initiate a lun scan or > send an inquiry so it's always valid data ? > Currently the SCSI stack doesn't do LUN rescanning; the only way to recover from stale data is to remove the device and initiate a host rescan. That's why we have tools like rescan-scsi-bus.sh etc. We're working on moving the SCSI stack to do a LUN rescanning, but that's still future stuff. So this patch just displays the status quo, without any added functionality. Cheers, Hannes -- Dr. Hannes Reinecke zSeries & Storage hare@xxxxxxx +49 911 74053 688 SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg GF: F. Imendörffer, J. Smithard, J. Guild, D. Upmanyu, G. Norton HRB 21284 (AG Nürnberg) -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
