mirror of
https://github.com/ibm-s390-linux/s390-tools.git
synced 2026-08-05 02:14:52 +00:00
bdaef6e76d
The linear search in the nested loop over SCSI devices and over the indexed array is still time consuming. So replace the indexed array with an associative array. Build the array once outside of the nested loop by using pathname expansion and extracting key and value from each item. Within the SCSI device loop, an array entry is removed by means of the key without linear search. This commit is separate from the previous one so it is possible to revert this one in case associative arrays would not be available and still get the speed improvement from the indexed array in the previous commit. Before: $ time ~/git/s390-tools/zconf/lszfcp -De | wc -l 1036 real 0m17.605s user 0m17.159s sys 0m0.308s After: $ time ~/git/s390-tools/zconf/lszfcp -De | wc -l 1036 real 0m0.207s user 0m0.175s sys 0m0.032s Reviewed-by: Benjamin Block <bblock@linux.ibm.com> Signed-off-by: Steffen Maier <maier@linux.ibm.com> Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
606 lines
15 KiB
Bash
Executable File
606 lines
15 KiB
Bash
Executable File
#!/bin/bash
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#
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# lszfcp - Tool to display information about zfcp devices (adapters/ports/units)
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#
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# Copyright IBM Corp. 2006, 2023
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#
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# s390-tools is free software; you can redistribute it and/or modify
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# it under the terms of the MIT license. See LICENSE for details.
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#
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SCRIPTNAME='lszfcp'
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SYSFS=`cat /proc/mounts | grep -m1 sysfs | awk '{ print $2 }'`
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FC_CLASS=false
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# Command line parameters
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VERBOSITY=0
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SHOW_MODPARMS=0
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SHOW_HOSTS=0
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SHOW_PORTS=0
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SHOW_DEVICES=0
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SHOW_ATTRIBUTES=false
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SHOW_MORE_ATTRS=0
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SHOW_EXTENDED=false
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unset PAR_BUSID PAR_WWPN PAR_LUN
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##############################################################################
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check_sysfs()
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{
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if [ -z $SYSFS -o ! -d $SYSFS -o ! -r $SYSFS ]; then
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echo "Error: sysfs not available."
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exit 1
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fi
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}
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check_zfcp_support()
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{
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if [ ! -e $SYSFS/bus/ccw/drivers/zfcp ]; then
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echo "Error: No zfcp support available."
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echo "Load the zfcp module or compile"
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echo "the kernel with zfcp support."
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exit 1
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fi
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}
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check_fcp_devs()
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{
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local found=0
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if $FC_CLASS; then
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# theoretically this includes "defunct" (and thus online) devs
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ignore=`ls $SYSFS/class/fc_host/host* 2>&1`
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else
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ignore=`ls $SYSFS/devices/css0/[0-9]*/[0-9]*/host[0-9]* 2>&1`
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fi
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[ $? -eq 0 ] && found=1
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if [ $found -eq 0 ] && $SHOW_EXTENDED; then
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# nothing found yet so search for "defunct" FCP devices
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ignore=$(ls -dX $SYSFS/devices/css[0-9]*/defunct/[0-9]*/host[0-9]* 2>&1)
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[ $? -eq 0 ] && found=1
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fi
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if [ $found -eq 0 ] && $SHOW_EXTENDED; then
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local mypath mylist=""
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# nothing found yet so search for FCP devices never been online
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for mypath in $SYSFS/bus/ccw/drivers/zfcp/*.*.*; do
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if [ "$mypath" = "$SYSFS/bus/ccw/drivers/zfcp/*.*.*" ];
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then
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break # glob did not match anything
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fi
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[ -d $mypath/host[0-9]* ] && continue # is/was online
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mylist="$mylist $(readlink -e $mypath)/-"
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done
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[ -n "$mylist" ] && found=1
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fi
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if [ $found -eq 0 ]; then
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echo "Error: No fcp devices found."
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exit 1
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fi
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}
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check_fc_class()
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{
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if [ -d "$SYSFS/class/fc_host" ]; then
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FC_CLASS=true
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fi
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}
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print_version()
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{
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cat <<EOF
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$SCRIPTNAME: version %S390_TOOLS_VERSION%
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Copyright IBM Corp. 2006, 2019
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EOF
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}
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print_help()
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{
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cat <<EOF
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Usage: $SCRIPTNAME [OPTIONS]
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Provide information contained in sysfs about zfcp adapters, ports and
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units that are online.
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Mandatory arguments to long options are mandatory for short options too.
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OPTIONS:
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-H, --hosts show host information (default)
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-P, --ports show remote port information
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-D, --devices show SCSI device information
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-Z, --modparms show zfcp (module) parameters
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-b, --busid=BUSID select specific busid
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-p, --wwpn=WWPN select specific port name
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-l, --lun=LUN select specific LUN
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-a, --attributes show attributes
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-m, --moreattrs show more attributes
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(host: css; port: zfcp_port; SCSI device: zfcp_unit)
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specify twice to show more attributes for SCSI devices
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(scsi_disk,block,integrity,queue,iosched)
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-V, --verbose show sysfs paths of associated class
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and bus devices
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-e, --extended extended output format
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-s, --sysfs=PATH use path as sysfs (for dbginfo archives)
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-h, --help print this help
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-v, --version print version information
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EXAMPLE:
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List for all zfcp adapters, ports and units the names of their
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associated SCSI hosts, FC remote ports and SCSI devices.
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#> lszfcp -P -H -D
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0.0.3d0c host0
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0.0.3d0c/0x500507630300c562 rport-0:0-0
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0.0.3d0c/0x500507630300c562/0x4010403300000000 0:0:0:0
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The default is to list bus_ids of all zfcp adapters and corresponding
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SCSI host names (equals "lszfcp -H").
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EOF
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}
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show_attributes()
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{
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if [ -z $1 -o ! -d $1 -o ! -r $1 ]; then
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return 1
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fi
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for FILE in `ls $1`; do
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read 2>/dev/null CONTENT < $1/$FILE
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# Read fails for directories and
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# files with permissions 0200.
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if [ $? -ne 0 ]; then
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continue
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fi
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printf " %-19s = \"%s\"\n" "$FILE" "$CONTENT"
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done
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}
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show_modparms()
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{
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local modparmdir=$SYSFS/module/zfcp/parameters
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[ -d "$modparmdir" ] || return
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if [ $VERBOSITY -ne 0 ]; then
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echo "$modparmdir"
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fi
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echo 'Module = "zfcp"'
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show_attributes "$modparmdir"
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echo
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}
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show_hosts()
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{
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HOST_LIST=`ls -dX $SYSFS/devices/css0/[0-9]*/[0-9]*/host[0-9]* \
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2> /dev/null`
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if $SHOW_EXTENDED; then
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# add all "defunct" FCP devices
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HOST_LIST="$HOST_LIST
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$(ls -dX $SYSFS/devices/css[0-9]*/defunct/[0-9]*/host[0-9]* 2>/dev/null)"
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# add all FCP devices that have never been online
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for HOST_PATH in $SYSFS/bus/ccw/drivers/zfcp/*.*.*; do
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[ -d $HOST_PATH/host[0-9]* ] && continue # is/was online
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HOST_LIST="$HOST_LIST
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$(readlink -e $HOST_PATH)/-"
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done
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fi
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for HOST_PATH in $HOST_LIST; do
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SCSI_HOST=`basename $HOST_PATH`
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ADAPTER_PATH=`dirname $HOST_PATH`
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ADAPTER=`basename $ADAPTER_PATH`
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[ $ADAPTER != ${PAR_BUSID:-$ADAPTER} ] && continue
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read ONLINE < $ADAPTER_PATH/online
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read AVAILABILITY < $ADAPTER_PATH/availability
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[ -r "$SYSFS/class/fc_host/$SCSI_HOST/port_state" ] && read PORT_STATE < "$SYSFS/class/fc_host/$SCSI_HOST/port_state"
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[ -r $ADAPTER_PATH/failed ] && read FAILED < $ADAPTER_PATH/failed
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DEFUNCT=${ADAPTER_PATH%/*} # strip devbusid
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DEFUNCT=${DEFUNCT##*/} # basename
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HOSTMARKER=""
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if $SHOW_EXTENDED; then
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if [ "$DEFUNCT" = "defunct" ]; then
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HOSTMARKER=" defunct"
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elif [ "$ONLINE" = "0" ]; then
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HOSTMARKER=" offline"
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elif [ "$PORT_STATE" = "Linkdown" ]; then
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HOSTMARKER=" linkdown"
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elif [ "$FAILED" = "1" ]; then
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HOSTMARKER=" failed"
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elif [ "$AVAILABILITY" != "good" ]; then
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HOSTMARKER=" NotAvailable"
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elif [ "$PORT_STATE" != "Online" ]; then
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HOSTMARKER=" NotOnline"
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fi
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fi
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if [ $VERBOSITY -eq 0 ]; then
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echo $ADAPTER $SCSI_HOST$HOSTMARKER
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else
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echo $ADAPTER_PATH$HOSTMARKER
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if [ "$SCSI_HOST" != "-" ]; then
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$FC_CLASS && echo "$SYSFS/class/fc_host/$SCSI_HOST"
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echo "$SYSFS/class/scsi_host/$SCSI_HOST"
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else
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echo "-"
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echo "-"
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fi
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fi
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if $SHOW_ATTRIBUTES; then
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if [ $SHOW_MORE_ATTRS -ge 1 ]; then
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echo 'Bus = "css"'
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if [ "$DEFUNCT" = "defunct" ]; then
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printf " %-19s\n" "defunct"
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else
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show_attributes ${ADAPTER_PATH%/*}
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fi
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fi
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echo 'Bus = "ccw"'
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show_attributes $ADAPTER_PATH
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if [ "$SCSI_HOST" = "-" ]; then
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# skip output of non-existent fc_host & scsi_host
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echo
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continue
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fi
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if $FC_CLASS; then
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echo 'Class = "fc_host"'
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show_attributes \
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"$SYSFS/class/fc_host/$SCSI_HOST"
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fi
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echo 'Class = "scsi_host"'
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show_attributes "$SYSFS/class/scsi_host/$SCSI_HOST"
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echo
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fi
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done
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}
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show_ports()
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{
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# Without fc_remote_class there is far less information to display.
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if ! $FC_CLASS; then
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PORT_LIST=`ls -d $SYSFS/devices/css0/*/*/0x*`
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for PORT_PATH in $PORT_LIST; do
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WWPN=`basename $PORT_PATH`
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ADAPTER=`basename \`dirname $PORT_PATH\``
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[ $WWPN != ${PAR_WWPN:-$WWPN} ] && continue
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[ $ADAPTER != ${PAR_BUSID:-$ADAPTER} ] && continue
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if [ $VERBOSITY -eq 0 ]; then
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echo "$ADAPTER/$WWPN"
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else
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echo $PORT_PATH
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fi
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done
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return
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fi
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if [ -e $SYSFS/class/fc_remote_ports/ ]; then
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PORT_LIST=`ls -d $SYSFS/class/fc_remote_ports/* 2>/dev/null`
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fi;
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for FC_PORT_PATH in $PORT_LIST; do
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PORT=`basename $FC_PORT_PATH`
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read PORT_STATE < $FC_PORT_PATH/port_state
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if [ "$PORT_STATE" == "Online" ] || $SHOW_EXTENDED; then
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read WWPN < $FC_PORT_PATH/port_name
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else
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continue
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fi
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PORTSTATEMARKER=""
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$SHOW_EXTENDED && [ "$PORT_STATE" != "Online" ] \
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&& PORTSTATEMARKER=" NotOnline"
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[ $WWPN != ${PAR_WWPN:-$WWPN} ] && continue
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local sysreal=$(readlink -e "$FC_PORT_PATH")
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local ADAPTER=""
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while [ -n "$sysreal" ]; do
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# ascend to parent: strip last path part
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sysreal=${sysreal%/*}
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[ -h $sysreal/subsystem ] || continue
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local subsystem=$(readlink -e $sysreal/subsystem)
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if [ "${subsystem##*/}" = "ccw" ]; then
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ADAPTER=${sysreal##*/}
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break
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fi
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done
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[ -z "$ADAPTER" ] && continue # skip not zfcp-attached ones
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if [ -d $SYSFS/devices/css[0-9]*/[0-9d]*/[0-9]*/$WWPN/../host[0-9]*/$PORT ];
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then
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ADAPTER_PORT_PATH=$SYSFS/devices/css[0-9]*/[0-9d]*/$ADAPTER/$WWPN
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else
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ADAPTER_PORT_PATH="-"
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fi
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[ $ADAPTER != ${PAR_BUSID:-$ADAPTER} ] && continue
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if [ $VERBOSITY -eq 0 ]; then
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echo "$ADAPTER/$WWPN $PORT$PORTSTATEMARKER"
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else
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if [ "$ADAPTER_PORT_PATH" != "-" ]; then
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echo $ADAPTER_PORT_PATH
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else
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echo "- (NoMoreZfcpPort:$ADAPTER/$WWPN)"
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fi
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echo $FC_PORT_PATH$PORTSTATEMARKER
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fi
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if $SHOW_ATTRIBUTES; then
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if [ $SHOW_MORE_ATTRS -ge 1 ] \
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&& [ "$ADAPTER_PORT_PATH" != "-" ] \
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&& [ -d $ADAPTER_PORT_PATH ];
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then
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# fc_rport can exist without zfcp_port
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# (e.g. after port_remove)
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echo 'Class = "zfcp_port"'
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show_attributes "$ADAPTER_PORT_PATH"
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fi
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echo 'Class = "fc_remote_ports"'
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show_attributes "$FC_PORT_PATH"
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echo
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fi
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done
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}
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show_devices()
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{
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# Differentiate old and new sysfs layout
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if $FC_CLASS; then
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SCSI_DEVICE_LIST=`ls -d \
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$SYSFS/bus/ccw/drivers/zfcp/*/host*/rport*/target*/*:*:*:* \
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2>/dev/null`
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else
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SCSI_DEVICE_LIST=`ls -d $SYSFS/devices/css0/*/*/host[0-9]*/*/`
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fi
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declare -A ZFCP_UNIT_DICT
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if $SHOW_EXTENDED; then
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ZFCP_UNITS=false
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for UNIT_PATH in "$SYSFS"/devices/css[0-9]*/[0-9d]*/[0-9]*/0x*/0x*; do
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if [ "$UNIT_PATH" = "$SYSFS/devices/css[0-9]*/[0-9d]*/[0-9]*/0x*/0x*" ]; then
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break # no match (as seen without nullglob)
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else
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ZFCP_UNITS=true
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fi
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STRIPPED_PATH=${UNIT_PATH}
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L=${UNIT_PATH##*/}
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STRIPPED_PATH=${STRIPPED_PATH%/*}
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W=${STRIPPED_PATH##*/}
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STRIPPED_PATH=${STRIPPED_PATH%/*}
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A=${STRIPPED_PATH##*/}
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ZFCP_UNIT_DICT["$A/$W/$L"]=${UNIT_PATH}
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done
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else
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ZFCP_UNITS=false
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fi
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if [ -z "$SCSI_DEVICE_LIST" ] && ! "$ZFCP_UNITS"; then
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if $SHOW_EXTENDED; then
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echo "Error: No zfcp-attached SCSI devices found."
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else
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echo "Error: No fcp devices found."
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fi
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fi
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for SCSI_DEVICE_PATH in $SCSI_DEVICE_LIST; do
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read ADAPTER < $SCSI_DEVICE_PATH/hba_id
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read WWPN < $SCSI_DEVICE_PATH/wwpn
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read LUN < $SCSI_DEVICE_PATH/fcp_lun
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ZFCP_UNIT_PATH="${ZFCP_UNIT_DICT[$ADAPTER/$WWPN/$LUN]}"
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# remove from ZFCP_UNIT_DICT if SCSI device exists
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unset "ZFCP_UNIT_DICT[$ADAPTER/$WWPN/$LUN]"
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[ $LUN != ${PAR_LUN:-$LUN} ] && continue
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[ $WWPN != ${PAR_WWPN:-$WWPN} ] && continue
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[ $ADAPTER != ${PAR_BUSID:-$ADAPTER} ] && continue
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SDEVMARKER=""
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if $SHOW_EXTENDED; then
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[ -n "$ZFCP_UNIT_PATH" ] || SDEVMARKER="$SDEVMARKER auto"
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read SDEVSTATE < $SCSI_DEVICE_PATH/state
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[ "$SDEVSTATE" != "running" ] \
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&& SDEVMARKER="$SDEVMARKER NotRunning"
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else
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# build manually because ZFCP_UNIT_DICT is not used
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ZFCP_UNIT_PATH=$SYSFS/devices/css[0-9]*/[0-9d]*/$ADAPTER/$WWPN/$LUN
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fi
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if [ $VERBOSITY -eq 0 ]; then
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echo "$ADAPTER/$WWPN/$LUN ${SCSI_DEVICE_PATH##*/}$SDEVMARKER"
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else
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echo "`ls -d $SYSFS/devices/css0/[0-9d]*/$ADAPTER`/$WWPN/$LUN"
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echo ${SCSI_DEVICE_PATH%*/}$SDEVMARKER # without trailing slash
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# On live systems, there are links to the block and
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# generic devices. In a dbginfo archive, these links
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# are not present. Therefore, fall back to reading
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# the runtime.out log file.
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if [ `ls $SCSI_DEVICE_PATH | grep -c block:` -eq 1 ]
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then
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BLOCK_DEV=`ls $SCSI_DEVICE_PATH | grep block:`
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GEN_DEV=`ls $SCSI_DEVICE_PATH |\
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grep scsi_generic:`
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echo -n "$SYSFS/block/${BLOCK_DEV#*:} "
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echo "$SYSFS/class/scsi_generic/${GEN_DEV#*:}"
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elif [ -d $SCSI_DEVICE_PATH/block ] && $SHOW_EXTENDED
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then
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# case without CONFIG_SYSFS_DEPRECATED
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BLOCK_DEV=$(echo $SCSI_DEVICE_PATH/block/*)
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BLOCK_DEV=${BLOCK_DEV##*/}
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echo -n "$SYSFS/block/$BLOCK_DEV "
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local SGPATH=$SCSI_DEVICE_PATH/scsi_generic
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if [ -d $SGPATH ]; then
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GEN_DEV=$(echo $SGPATH/*)
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GEN_DEV=${GEN_DEV##*/}
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echo "$SYSFS/class/scsi_generic/$GEN_DEV"
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else
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echo "-"
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fi
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# FIXME Find a way to assign the generic devices.
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elif [ -r $SYSFS/../runtime.out ]; then
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SCSI_DEV=`basename $SCSI_DEVICE_PATH`
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echo "$SYSFS/block/"`grep -r "\[$SCSI_DEV\]"\
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$SYSFS/../runtime.out |\
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awk -F "/dev/" '{print $2}'`
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fi
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fi
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if $SHOW_ATTRIBUTES && [ $SHOW_MORE_ATTRS -ge 1 ]; then
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# auto scan LUNs not necessarily have a zfcp_unit
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if [ -n "$ZFCP_UNIT_PATH" ] && [ -d $ZFCP_UNIT_PATH ]; then
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echo 'Class = "zfcp_unit"'
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show_attributes "$ZFCP_UNIT_PATH"
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fi
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fi
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if $SHOW_ATTRIBUTES; then
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echo 'Class = "scsi_device"'
|
|
show_attributes "$SCSI_DEVICE_PATH"
|
|
fi
|
|
if $SHOW_ATTRIBUTES && [ $SHOW_MORE_ATTRS -ge 2 ]; then
|
|
if [ -d $SCSI_DEVICE_PATH/scsi_disk ]; then
|
|
echo 'Class = "scsi_disk"'
|
|
show_attributes "$SCSI_DEVICE_PATH/scsi_disk/$(basename $SCSI_DEVICE_PATH)"
|
|
fi
|
|
if [ -d $SCSI_DEVICE_PATH/block ]; then
|
|
echo 'Class = "block"'
|
|
show_attributes "$SCSI_DEVICE_PATH/block/*/"
|
|
fi
|
|
if [ -d $SCSI_DEVICE_PATH/block/*/integrity ]; then
|
|
echo 'Class = "block_integrity"'
|
|
show_attributes "$SCSI_DEVICE_PATH/block/*/integrity"
|
|
fi
|
|
if [ -d $SCSI_DEVICE_PATH/block/*/queue ]; then
|
|
echo 'Class = "block_queue"'
|
|
show_attributes "$SCSI_DEVICE_PATH/block/*/queue"
|
|
fi
|
|
if [ -d $SCSI_DEVICE_PATH/block/*/queue/iosched ]; then
|
|
echo 'Class = "block_queue_iosched"'
|
|
show_attributes "$SCSI_DEVICE_PATH/block/*/queue/iosched"
|
|
fi
|
|
fi
|
|
if $SHOW_ATTRIBUTES; then
|
|
echo
|
|
fi
|
|
done
|
|
|
|
# what's left in ZFCP_UNIT_DICT are now units without SCSI device
|
|
for UNIT_PATH in "${ZFCP_UNIT_DICT[@]}"; do
|
|
STRIPPED_PATH=$UNIT_PATH
|
|
LUN=${UNIT_PATH##*/}
|
|
STRIPPED_PATH=${STRIPPED_PATH%/*}
|
|
WWPN=${STRIPPED_PATH##*/}
|
|
STRIPPED_PATH=${STRIPPED_PATH%/*}
|
|
ADAPTER=${STRIPPED_PATH##*/}
|
|
|
|
[ $LUN != ${PAR_LUN:-$LUN} ] && continue
|
|
[ $WWPN != ${PAR_WWPN:-$WWPN} ] && continue
|
|
[ $ADAPTER != ${PAR_BUSID:-$ADAPTER} ] && continue
|
|
|
|
if [ $VERBOSITY -eq 0 ]; then
|
|
echo "$ADAPTER/$WWPN/$LUN - failed"
|
|
else
|
|
echo "$UNIT_PATH failed"
|
|
echo "-"
|
|
echo "- -"
|
|
fi
|
|
|
|
if $SHOW_ATTRIBUTES && [ $SHOW_MORE_ATTRS -ge 1 ]; then
|
|
echo 'Class = "zfcp_unit"'
|
|
show_attributes "$UNIT_PATH"
|
|
fi
|
|
|
|
if $SHOW_ATTRIBUTES; then
|
|
echo
|
|
fi
|
|
done
|
|
}
|
|
|
|
|
|
##############################################################################
|
|
|
|
ARGS=`getopt --options ahvHPDVb:p:l:s:emZ --longoptions \
|
|
attributes,help,version,hosts,ports,devices,verbose,busid:,wwpn:,lun:,sysfs:,extended,moreattrs,modparms \
|
|
-n "$SCRIPTNAME" -- "$@"`
|
|
|
|
if [ $? -ne 0 ]; then
|
|
echo
|
|
print_help
|
|
exit
|
|
fi
|
|
|
|
eval set -- "$ARGS"
|
|
|
|
for ARG; do
|
|
case "$ARG" in
|
|
-a|--attributes) SHOW_ATTRIBUTES=true; shift 1;;
|
|
-m|--moreattrs) ((SHOW_MORE_ATTRS++)); shift 1;;
|
|
-e|--extended) SHOW_EXTENDED=true; shift 1;;
|
|
-b|--busid) PAR_BUSID=$2; shift 2;;
|
|
-h|--help) print_help; exit 0;;
|
|
-l|--lun) PAR_LUN=$2; shift 2;;
|
|
-p|--wwpn) PAR_WWPN=$2; shift 2;;
|
|
-v|--version) print_version; exit 0;;
|
|
-H|--hosts) SHOW_HOSTS=1; shift 1;;
|
|
-D|--devices) SHOW_DEVICES=1; shift 1;;
|
|
-P|--ports) SHOW_PORTS=1; shift 1;;
|
|
-V|--verbose) VERBOSITY=1; shift 1;;
|
|
-Z|--modparms) SHOW_MODPARMS=1; shift 1;;
|
|
-s|--sysfs) SYSFS=$2; shift 2;;
|
|
--) shift; break;;
|
|
esac
|
|
done
|
|
|
|
check_sysfs
|
|
check_zfcp_support
|
|
check_fc_class
|
|
check_fcp_devs
|
|
|
|
default=1
|
|
if [ $SHOW_MODPARMS -eq 1 ]; then
|
|
default=0; show_modparms
|
|
fi
|
|
|
|
if [ $SHOW_HOSTS -eq 1 ]; then
|
|
default=0; show_hosts
|
|
elif [ $SHOW_PORTS -eq 0 -a $SHOW_DEVICES -eq 0 -a -n "$PAR_BUSID" ]; then
|
|
default=0; show_hosts
|
|
fi
|
|
|
|
if [ $SHOW_PORTS -eq 1 ]; then
|
|
default=0; show_ports
|
|
elif [ $SHOW_HOSTS -eq 0 -a $SHOW_DEVICES -eq 0 -a -n "$PAR_WWPN" ]; then
|
|
default=0; show_ports
|
|
fi
|
|
|
|
if [ $SHOW_DEVICES -eq 1 ]; then
|
|
default=0; show_devices
|
|
elif [ $SHOW_HOSTS -eq 0 -a $SHOW_PORTS -eq 0 -a -n "$PAR_LUN" ]; then
|
|
default=0; show_devices
|
|
fi
|
|
|
|
if [ $default == 1 ]; then
|
|
show_hosts
|
|
fi
|