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Date:      Sat, 13 May 2006 00:51:01 -0500
From:      Dan Nelson <dnelson@allantgroup.com>
To:        Graham Bentley <gbentley@uk2.net>
Cc:        freebsd-questions@freebsd.org
Subject:   Re: Security / kernel message interpretations please !
Message-ID:  <20060513055101.GC80367@dan.emsphone.com>
In-Reply-To: <20060513051909.B4F1943D46@mx1.FreeBSD.org>
References:  <20060513051909.B4F1943D46@mx1.FreeBSD.org>

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In the last episode (May 13), Graham Bentley said:
> I posted about this a few days ago and its appeared again in my
> security log (the backup routine log appears to be fine)
> 
> +(sa0:ahc0:0:6:0): PREVENT ALLOW MEDIUM REMOVAL. CDB: 1e 0 0 0 0 0 
> +(sa0:ahc0:0:6:0): CAM Status: SCSI Status Error
> +(sa0:ahc0:0:6:0): SCSI Status: Check Condition
> +(sa0:ahc0:0:6:0): UNIT ATTENTION asc:28,0
> +(sa0:ahc0:0:6:0): Not ready to ready change, medium may have changed
> +(sa0:ahc0:0:6:0): Unretryable error
> 
> I have googled about and there is some suggestion that a
> change of tape may cure this ie using DDS4 tapes rather
> than DDS3 in a DDS4 drive. I also read about "Vendor
> Specific ASCQ" but it was beyond me. I am going to leave
> the same tape in and see if its repeated at tonites backup.

I believe you'll get a UNIT ATTENTION on every media load; it's just
how SCSI drivers work.  Not sure why it's getting logged to the
console, though.

-- 
	Dan Nelson
	dnelson@allantgroup.com



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