Date: Sat, 28 May 2011 18:03:41 -0400 From: Dan Langille <dan@langille.org> To: freebsd-scsi@freebsd.org Subject: Does the tape library need cleaning? Message-ID: <C11C1FC4-8D39-4503-9CFF-00DC8544987D@langille.org>
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I'm wondering if there is a way to query my tape library to see if =
cleaning is required? This information is shown on the display of the =
unit, but I'd like to query the device and display it on a webpage.
Here is what I have.
$ mtx -f /dev/pass11 inquiry
Product Type: Medium Changer
Vendor ID: 'DEC '
Product ID: 'TL800 (C) DEC'
Revision: '0326'
Attached Changer API: No
I'm guessing I need to know more about about the scsi commands I can =
send to the device and use camcontrol to extract the information. Much =
like this command pulls back data (as extracted from a a:
set -- `camcontrol cmd $tape -v -t 3 -c "4d 0 43 0 0 0 0 0 40 0" -i 64 =
\
"{skip} *i4 \
{skip} *i4 \
{Corrected errors with substantial delay } i4 \
{skip} *i4 \
{Corrected errors with possible delay } i4 \
{skip} *i4 \
{Total errors } i4 \
{skip} *i4 \
{Total errors corrected } i4 \
{skip} *i4 \
{Total times correction algorithm processed} i4 \
{skip} *i4 \
{Total bytes processed } i2 i3 i3 \
{skip} *i4 \
{Total uncorrected errors } i4"
`
echo " Corrected errors with substantial delay: $1"
echo " Corrected errors with possible delay : $2"
echo " Total errors : $3"
echo " Total errors corrected : $4"
echo " Total times correction algorithm used : $5"
tmp=3D`echo "($6 * 16777216 + $7) * 16777216 + $8" | bc`
echo " Total bytes processed : $tmp"
--=20
Dan Langille - http://langille.org
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