130 lines
3.5 KiB
Bash
130 lines
3.5 KiB
Bash
#!/bin/bash
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# Usage: block-npiv [add npiv | remove dev]
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dir=$(dirname "$0")
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. "$dir/block-npiv-common.sh"
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. "$dir/block-common.sh"
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#set -x
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#command=$1
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case "$command" in
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add)
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# Params is one big arg, with fields separated by hyphens:
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# single path:
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# VPWWPN-TGTWWPN-LUN#
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# multipath:
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# {VPWWPN1.VPWWPN2....VPWWPNx}-{TGTWWPN1.TGTWWPN2....TGTWWPNx}-LUN#
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# arg 1 - VPORT's WWPN
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# arg 2 - Target's WWPN
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# arg 3 - LUN # on Target
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# no wwn contains a leading 0x - it is a 16 character hex value
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# You may want to optionally pick a specific adapter ?
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par=`xenstore-read $XENBUS_PATH/params` || true
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NPIVARGS=(${par//-/ })
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wc=${#NPIVARGS[@]}
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if [ $wc -eq 5 ]; then
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# support old syntax
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# FABRIC-VPWWPN-VPWWNN-TGTWWPN-LUN
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VPORTWWPNS=${NPIVARGS[1]}
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VPORTWWNNS=${NPIVARGS[2]}
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TGTWWPNS=${NPIVARGS[3]}
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LUN=${NPIVARGS[4]}
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elif [ $wc -eq 3 ]; then
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# new syntax
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VPORTWWPNS=${NPIVARGS[0]}
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TGTWWPNS=${NPIVARGS[1]}
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LUN=${NPIVARGS[2]}
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else
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# wrong syntax
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exit 1
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fi
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# Ensure we compare everything using lower-case hex characters
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TGTWWPNS=`echo $TGTWWPNS | tr A-Z a-z |sed 's/[{.}]/ /g'`
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VPORTWWPNS=`echo $VPORTWWPNS | tr A-Z a-z |sed 's/[{.}]/ /g'`
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# Only one VPWWNN is supported
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VPORTWWNN=`echo $VPORTWWNNS | tr A-Z a-z | sed -e 's/\..*//g' -e 's/{//'`
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claim_lock "npiv"
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paths=0
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for VPORTWWPN in $VPORTWWPNS; do
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find_vhost $VPORTWWPN
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if test -z "$vhost" ; then
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create_vport $VPORTWWPN $VPORTWWNN
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if [ $? -ne 0 ] ; then exit 2; fi
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sleep 8
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find_vhost $VPORTWWPN
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if test -z "$vhost" ; then exit 3; fi
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fi
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for TGTWWPN in $TGTWWPNS; do
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find_sdev $vhost $TGTWWPN $LUN
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if test -z "$dev"; then
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echo "- - -" > /sys/class/scsi_host/$vhost/scan
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sleep 2
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find_sdev $vhost $TGTWWPN $LUN
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fi
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if test -z "$dev"; then
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exit 4
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fi
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paths=$(($paths+1))
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done
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done
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release_lock "npiv"
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if test $paths -gt 1; then
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xenstore-write $XENBUS_PATH/multipath 1
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/etc/init.d/multipathd start
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if test $? -ne 0 ; then exit 4; fi
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dm=`multipath -l /dev/$dev | grep dm | cut -f2 -d' '`
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else
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xenstore-write $XENBUS_PATH/multipath 0
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dm=$dev
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fi
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if test ! -z "$dm"; then
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xenstore-write $XENBUS_PATH/node /dev/$dm
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write_dev /dev/$dm
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exit 0
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fi
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exit 4
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;;
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remove)
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node=`xenstore-read $XENBUS_PATH/node` || true
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multipath=`xenstore-read $XENBUS_PATH/multipath` || true
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# this is really screwy. the first delete of a lun will
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# terminate the entire vport (all luns)
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if test $multipath = 1; then
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par=`xenstore-read $XENBUS_PATH/params` || true
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NPIVARGS=(${par//-/ })
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wc=${#NPIVARGS[@]}
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if [ $wc -eq 5 ]; then
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# old syntax
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# FABRIC-VPWWPN-VPWWNN-TGTWWPN-LUN
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VPORTWWPNS=${NPIVARGS[1]}
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elif [ $wc -eq 3 ]; then
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# new syntax
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VPORTWWPNS=${NPIVARGS[0]}
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fi
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VPORTWWPNS=`echo $VPORTWWPNS | tr A-Z a-z |sed 's/[{.}]/ /g'`
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for VPORTWWPN in $VPORTWWPNS; do
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find_vhost $VPORTWWPN
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if test -z "$vhost" ; then exit 5; fi
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flush_nodes_on_vhost $vhost
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delete_vhost $vhost
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done
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else
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dev=$node; dev=${dev#/dev/}
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find_vhost_from_dev $dev
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if test -z "$vhost" ; then exit 5; fi
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flush_nodes_on_vhost $vhost
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delete_vhost $vhost
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fi
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exit 0
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;;
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esac
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