__ __ __ __ _____ _ _ _____ _ _ _
| \/ | \ \ / / | __ \ (_) | | / ____| | | | |
| \ / |_ __\ V / | |__) | __ ___ ____ _| |_ ___ | (___ | |__ ___| | |
| |\/| | '__|> < | ___/ '__| \ \ / / _` | __/ _ \ \___ \| '_ \ / _ \ | |
| | | | |_ / . \ | | | | | |\ V / (_| | || __/ ____) | | | | __/ | |
|_| |_|_(_)_/ \_\ |_| |_| |_| \_/ \__,_|\__\___| |_____/|_| |_|\___V 2.1
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For_More_Tools:
### Disable OBDR mode
###
if ! grep -q '^cciss ' -e '^hpsa ' /proc/modules; then
return
fi
if ! type -p lsscsi &>/dev/null; then
echo "WARNING: Missing required lsscsi binary" >&2
return
fi
if ! type -p sg_wr_mode &>/dev/null; then
echo "WARNING: Missing required sg_wr_mode binary" >&2
return
fi
### Wait for SCSI engage to settle before disabling OBDR
sleep 2
### Find CCISS tape host device
CDROM_DEVICE="$(lsscsi | awk '/ +cd\/dvd +HP +Ultrium/ { print $7; exit }')"
### Disable OBDR mode
if [[ "$CDROM_DEVICE" && -b $CDROM_DEVICE ]]; then
echo "Disable OBDR mode for device $CDROM_DEVICE" >&2
sg_wr_mode -f -p 3eh -c 3e,2,0,0 $CDROM_DEVICE
sleep 2
fi
### Find Host/Channel/Id/Lun of device
### On systems with large number of connected perhepials, we need to find proper HCIL from lsscsi, f.x.
### [2:0:10:0] tape HP Ultrium 6-SCSI 25MW /dev/st6
### As awk's Field Separator use three characters '] [ :' , but we have to double escape brackets
### Ref. https://www.gnu.org/software/gawk/manual/html_node/Command-Line-Field-Separator.html
HCIL="$(lsscsi | awk 'BEGIN {FS="[\\]|\\[|:]"} / +cd\/dvd +HP +Ultrium/ { print $2, $3, $4, $5; exit }')"
### Rescan device to turn cdrom into tape device
if [[ "$HCIL" ]]; then
echo "Rescan single device using $HCIL" >&2
echo "scsi remove-single-device $HCIL" >/proc/scsi/scsi
sleep 2
echo "scsi add-single-device $HCIL" >/proc/scsi/scsi
### FIXME: Monitor for the device instead ?
echo "Wait for devices to settle" >&2
sleep 10
fi