D48839.diff
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	diff --git a/sys/cam/scsi/scsi_da.c b/sys/cam/scsi/scsi_da.c
	--- a/sys/cam/scsi/scsi_da.c
	+++ b/sys/cam/scsi/scsi_da.c
	@@ -2208,7 +2208,8 @@
	ccb = (union ccb *)arg;

	/*
	- * Handle all UNIT ATTENTIONs except our own, as they will be
	+ * Unit attentions are broadcast to all the LUNs of the device
	+ * so handle all UNIT ATTENTIONs except our own, as they will be
	* handled by daerror().
	*/
	if (xpt_path_periph(ccb->ccb_h.path) != periph &&
	@@ -6050,6 +6051,16 @@
	/* 28/0: NOT READY TO READY CHANGE, MEDIUM MAY HAVE CHANGED */
	softc->flags &= ~DA_FLAG_PROBED;
	disk_media_changed(softc->disk, M_NOWAIT);
	+ /*
	+ * In an ideal world, we'd make sure that we have the
	+ * same medium mounted (if we'd seen one already) but
	+ * instead we don't invalidate the pack here and flag
	+ * below to retry the UAs. If we exhaust retries, then
	+ * we'll invalidate it in dadone for ENXIO errors (which
	+ * 28/0 will fail with eventually). Usually, retrying
	+ * just works and/or we get this before we've opened the
	+ * device (which clears the invalid flag).
	+ */
	} else if (sense_key == SSD_KEY_UNIT_ATTENTION &&
	asc == 0x3F && ascq == 0x03) {
	/* 3f/3: INQUIRY DATA HAS CHANGED */