On Thu, 30 Oct 2008 18:09:22 +1100 "ronnie sahlberg" <ronniesahlberg@xxxxxxxxx> wrote: > On Thu, Oct 30, 2008 at 11:04 AM, FUJITA Tomonori > <fujita.tomonori@xxxxxxxxxxxxx> wrote: > > On Wed, 29 Oct 2008 12:26:58 +0100 > > Tomasz Chmielewski <mangoo@xxxxxxxx> wrote: > > >> Is it possible to send a reset/rescan to all initiators connected to a > >> given target, which would trigger the initiator to rescan the device > >> (and its size)? > > > > A scsi device can notify initiators of such event via UA (unit > > attention), google "CAPACITY DATA HAS CHANGED". tgt has the mechanism > > to handle UA so it's easy to support it. However, on the initiator > > side, Linux doesn't detect such event automatically. > > -- > > I guess this is dependent on the transport, but at least for iSCSI the > way to do this by sending an AsynchronousRequest to the initiator. > To send to connected initiators when a lun changes in size, > also to all connected (and affected) initiators if the lun masking > changes for the target. I guess that you are talking about SCSI Asynchronous Event Reporting, right? SAM-3 has made it obsolete. The proper way to notify initiators of an event is UA now. And I'm not sure there is a standard way to notify initiators of the device resize via AER. > Are you saying that Linux initiators do not understand AsyncRequest PDUs ? At least, open-iscsi doesn't support it, I think. -- To unsubscribe from this list: send the line "unsubscribe stgt" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
