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Date:      Thu, 13 Oct 2005 18:47:06 +0200
From:      Danny Braniss <danny@cs.huji.ac.il>
To:        scsi@freebsd.org
Cc:        "Kenneth D. Merry" <ken@freebsd.org>
Subject:   iSCSI/CAM & tags
Message-ID:  <E1EQ6EU-0001vS-Ax@cs1.cs.huji.ac.il>
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I need to 'syncronize' the discovery of devices on the target with
the iscsi module so that is can set the tag opening size. At the
moment im doing this in the user mode control (iscontrol) with
a sleep.
     ...
     sleep(5);
     // this call will return the needed info:
     //	cam_id, target_id, nluns, luns[].
     if(ioctl(sess->fd, ISCSIGETCAM, &sess->cam) != 0) {
	  syslog(LOG_WARNING, "ISCSIGETCAM failed: %d", errno);
	  return;
     }
     ...
     while(sess->camdev == NULL) {
	       sess->camdev = cam_open_btl(sess->cam.path_id,
                                           sess->cam.target_id,
					   sess->cam.target_lun[i], O_RDWR,
                                           NULL);
	       if(sess->camdev != NULL) {
		    if(count-- == 0) {
			 syslog(LOG_WARNING, "%s", cam_errbuf);
			 debug(3, "%s", cam_errbuf);
			 return;
		    }
	       }
	       sleep(1);
     }

There must be a better way.
any ideas are welcomed.

	danny

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