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#!/bin/bash
#
# cciss_id
#
# Generates device node names according to the cciss naming rules
#
# Copyright (C) 2011 SUSE Linux Products GmbH
# Author:
# Hannes Reinecke <hare@suse.de>
#
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation version 2 of the License.
#
# This script generates a device node name which is compatible
# with the 'cciss' device naming rules.
# It is intended to provide backward-compatible names for the
# 'hpsa' driver.
#
cciss_enumerate()
{
local last_pci_dev=${1##0000:}
local cur_pci_dev
local cciss_num=0
for cur_pci_dev in $(lspci -n | tac | sed -n 's/\(..:..\..\) .* 103c:\(3220\|3230\|3238\|323a\|323b\) .*/\1/p') ; do
if [ "$cur_pci_dev" == "$last_pci_dev" ] ; then
echo "$cciss_num"
return;
fi
cciss_num=$(($cciss_num + 1))
done
echo "$cciss_num"
}
hpsa_lun_offset()
{
local scsi_host=$1
scsi_id=$(lsscsi 2>/dev/null | sed -n "s/.\(${scsi_host}:[0-9]*:[0-9]*:[0-9]*\)..*disk .*/\1/p" | head -1)
echo ${scsi_id##*:}
}
DEVPATH=$1
SCSIPATH=$(cd -P /sys$DEVPATH/device; echo $PWD)
SCSIID=${SCSIPATH##*/}
HOSTID=${SCSIID%%:*}
LUNID=${SCSIID##*:}
PCIPATH=${SCSIPATH%%/host*}
PCIDEV=${PCIPATH##*/}
HOSTPATH=${PCIPATH}/host${HOSTID}/scsi_host/host${HOSTID}
read controller 2>/dev/null <${HOSTPATH}/ctlr_num || controller=$(cciss_enumerate $PCIDEV)
# hpsa lies about the LUN ...
disk_offset=$(hpsa_lun_offset $HOSTID)
if [ "$disk_offset" ] ; then
disk=$(( $LUNID - $disk_offset ))
else
disk=$LUNID
fi
if [ "$controller" ] && [ "$disk" ] ; then
echo "ID_CCISS=c${controller}d${disk}"
fi
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