From owner-freebsd-scsi  Mon Mar 22 11:12:27 1999
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Date: Mon, 22 Mar 1999 12:02:58 -0700 (MST)
From: "Justin T. Gibbs" <gibbs@narnia.plutotech.com>
Message-Id: <199903221902.MAA26990@narnia.plutotech.com>
To: Charles Owens <owensc@enc.edu>
Cc: scsi@FreeBSD.org
Subject: Re: ch(4) driver is noisy
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In article <36F684F6.FF645E3B@enc.edu> you wrote:
> Every time I use the chio command to control my tape library
> (MediaLogic) I get a kernal message or the sort
> 
> Mar 22 12:29:42 r2s3 /kernel: (ch0:ahc0:0:5:0): warning, READ ELEMENT STATUS avail != count

Hmm.  This will take a little more investigation on my part to see how
the code is supposed to work.  It seems that chio is not requesting
the same number of elements to be reported as known to your changer
device.  Can you apply this patch which will instrument the code and
help me figure out what is going on.

--
Justin


==== //depot/cam/sys/cam/scsi/scsi_ch.c#18 - /a/perforce/src/sys/cam/scsi/scsi_ch.c ====
*** /tmp/tmp.26982.0	Mon Mar 22 12:02:10 1999
--- /a/perforce/src/sys/cam/scsi/scsi_ch.c	Mon Mar 22 12:02:02 1999
***************
*** 1189,1195 ****
  
  	if (avail != cesr->cesr_element_count) {
  		xpt_print_path(periph->path);
! 		printf("warning, READ ELEMENT STATUS avail != count\n");
  	}
  
  	user_data = (struct changer_element_status *)
--- 1189,1196 ----
  
  	if (avail != cesr->cesr_element_count) {
  		xpt_print_path(periph->path);
! 		printf("warning, READ ELEMENT STATUS avail(%d) != count(%d)\n",
! 		       avail, cesr->cesr_element_count);
  	}
  
  	user_data = (struct changer_element_status *)


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