problems with tape drive
David Tonhofer
d.tonhofer at m-plify.com
Thu Feb 1 14:27:15 UTC 2007
Dana Holland wrote:
>
>
> This is what's showing in /proc/scsi/scsi - the device with Id: 06
> used to say Seagate DAT-72, so I've obviously changed something in my
> attempts to fix this.
>
>
You mean to say that there is no entry?
Try scanning the SCSI bus with this little script (just run it as
scan_scsi_bush.sh)
#!/bin/bash
# Skript to rescan SCSI bus, using the
# scsi add-single-device mechanism
# (w) 98/03/19 Kurt Garloff <kurt at garloff.de> (c) GNU GPL
# Return hosts. /proc/scsi/HOSTADAPTER/? must exist
findhosts ()
{
hosts=
for name in /proc/scsi/*/?; do
name=${name#/proc/scsi/}
if test ! $name = scsi
then hosts="$hosts ${name#*/}"
echo "Host adapter ${name#*/} (${name%/*}) found."
fi
done
}
# Test if SCSI device $host $channen $id $lun exists
# Outputs description from /proc/scsi/scsi, returns new
testexist ()
{
grepstr="scsi$host Channel: 0$channel Id: 0*$id Lun: 0$lun"
new=`cat /proc/scsi/scsi|grep -e"$grepstr"`
if test ! -z "$new"
then cat /proc/scsi/scsi|grep -e"$grepstr"
cat /proc/scsi/scsi|grep -A2 -e"$grepstr"|tail -2|pr -o4 -l1
fi
}
# Perform search (scan $host)
dosearch ()
{
for channel in $channelsearch; do
for id in $idsearch; do
for lun in $lunsearch; do
new=
devnr="$host $channel $id $lun"
echo "Scanning for device $devnr ..."
printf "OLD: "
testexist
if test ! -z "$remove" -a ! -z "$new"
then echo "scsi remove-single-device $devnr" >/proc/scsi/scsi
echo "scsi add-single-device $devnr" >/proc/scsi/scsi
printf "\r\x1b[A\x1b[A\x1b[AOLD: "
testexist
if test -z "$new"; then printf "\rDEL: \r\n\n\n\n"; let
rmvd+=1; fi
fi
if test -z "$new"
then printf "\rNEW: "
echo "scsi add-single-device $devnr" >/proc/scsi/scsi
testexist
if test -z "$new"; then printf "\r\x1b[A"; else let found+=1; fi
fi
done
done
done
}
# main
if test @$1 = @--help -o @$1 = @-h
then
echo "Usage: scan_scsi_bus.sh [-l] [-w] [-c] [host [host ...]]"
echo " -l activates scanning for LUNs 0 .. 7 [default: 0]"
echo " -w enables scanning for device IDs 0 .. 15 [def.: 0 .. 7]"
echo " -r enables removing of devices [default: disabled]"
echo " -c enables scanning of channels 0 1 [default: 0]"
echo " If hosts are given, only these are scanned [default: all]"
exit 0
fi
# defaults
lunsearch="0"
idsearch="0 1 2 3 4 5 6 7"
channelsearch="0"
remove=""
# Scan options
opt="$1"
while test ! -z "$opt" -a -z "${opt##-*}"; do
opt=${opt#-}
case "$opt" in
l) lunsearch="0 1 2 3 4 5 6 7" ;;
w) idsearch="0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15" ;;
c) channelsearch="0 1" ;;
r) remove=1 ;;
*) echo "Unknown option -$opt !" ;;
esac
shift
opt="$1"
done
# Hosts given ?
if test @$1 = @; then findhosts; else hosts=$*; fi
declare -i found=0
declare -i rmvd=0
for host in $hosts; do dosearch; done
echo "$found new device(s) found. "
echo "$rmvd device(s) removed. "
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