Am Dienstag 25 September 2007 schrieb Hannes Reinecke: > Oliver Neukum wrote: > > Hi, > > > > what is the difference between these states? What function should > > I call to block a device in order to securely flush the caches? > > > SDEV_BLOCK blocks _any_ commands from the midlayer; eg. if the LLDD > is doing some internal recovery. > SDEV_QUIESCE only blocks 'normal' data commands; others (like control > commands) can still get through. > > So for flushing you should use SDEV_QUIESCE. Thank you, that's very helpful. Regards Oliver - 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
