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block-npiv
301
block-npiv
@@ -8,100 +8,267 @@ dir=$(dirname "$0")
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#set -x
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#command=$1
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# Find first alive non-VHOST
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find_qla()
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# Look for the NPIV vport with the WWPN
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# $1 contains the WWPN (assumes it does not contain a leading "0x")
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find_vhost()
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{
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unset qla
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for qla in /proc/scsi/qla2xxx/*; do
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if grep -q "<DEAD>" $qla; then
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continue
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fi
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if grep -q "VHOST index" $qla; then
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continue
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unset vhost
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# look in upstream locations
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for fchost in /sys/class/fc_vports/* ; do
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if test -e $fchost/port_name ; then
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wwpn=`cat $fchost/port_name | sed -e s/^0x//`
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if test $wwpn = $1 ; then
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# Note: makes the assumption the vport will always have an scsi_host child
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vhost=`ls -d $fchost/device/host*`
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vhost=`basename $vhost`
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return
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fi
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fi
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done
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# look in vendor-specific locations
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# Emulex - just looks like another scsi_host - so look at fc_hosts...
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for fchost in /sys/class/fc_host/* ; do
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if test -e $fchost/port_name ; then
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wwpn=`cat $fchost/port_name | sed -e s/^0x//`
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if test $wwpn = $1 ; then
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# Note: makes the assumption the vport will always have an scsi_host child
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vhost=`basename $fchost`
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return
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fi
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fi
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return
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done
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}
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# Find dev for NPIV
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# Create a NPIV vport on the fabric w/ FABRICNM, with WWPN,WWNN
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# $1 contains FABRICNM
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# $2 contains the VPORT WWPN
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# $3 contains the VPORT WWNN
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# (assumes no name contains a leading "0x")
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create_vport()
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{
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# find a base adapter with npiv support that is on the right fabric
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# Look via upstream interfaces
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for fchost in /sys/class/fc_host/* ; do
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if test -e $fchost/vport_create ; then
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# is the link up, w/ NPIV support ?
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pstate=`cat $fchost/port_state`
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ptype=`cat $fchost/port_type | cut -c 1-5`
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fname=`cat $fchost/fabric_name | sed -e s/^0x//`
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if [ $pstate = "Online" -a $ptype = "NPort" -a $fname = $1 ] ; then
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vmax=`cat $fchost/max_npiv_vports`
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vinuse=`cat $fchost/npiv_vports_inuse`
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avail=`expr $vmax - $vinuse`
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if [ $avail -gt 0 ] ; then
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# create the vport
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echo $2":"$3 > $fchost/vport_create
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if [ $? -eq 0 ] ; then
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return 0
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fi
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# failed - so we'll just look for the next adapter
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fi
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fi
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fi
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done
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# Look in vendor-specific locations
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# Emulex: interfaces mirror upstream, but are under adapter scsi_host
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for shost in /sys/class/scsi_host/* ; do
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if [ -e $shost/vport_create ] ; then
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fchost=`ls -d $shost/device/fc_host*`
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# is the link up, w/ NPIV support ?
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pstate=`cat $fchost/port_state`
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ptype=`cat $fchost/port_type | cut -c 1-5`
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fname=`cat $fchost/fabric_name | sed -e s/^0x//`
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if [ $pstate = "Online" -a $ptype = "NPort" -a $fname = $1 ] ; then
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vmax=`cat $shost/max_npiv_vports`
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vinuse=`cat $shost/npiv_vports_inuse`
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avail=`expr $vmax - $vinuse`
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if [ $avail -gt 0 ] ; then
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# create the vport
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echo $2":"$3 > $shost/vport_create
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if [ $? -eq 0 ] ; then
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return 0
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fi
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# failed - so we'll just look for the next adapter
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fi
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fi
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fi
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done
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return 1
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}
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# Look for the LUN on the indicated scsi_host (which is an NPIV vport)
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# $1 is the scsi_host name (normalized to simply the hostX name)
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# $2 is the WWPN of the tgt port the lun is on
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# Note: this implies we don't support a multipath'd lun, or we
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# are explicitly identifying a "path"
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# $3 is the LUN number of the scsi device
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find_sdev()
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{
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unset dev
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for host in /proc/scsi/qla2xxx/*; do
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if grep -q $1 $host; then
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h=${host##*/}
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dev=`readlink /sys/class/scsi_device/$h*:0/device/block*`
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dev=${dev##*/}
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return
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fi
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done
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}
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# Find host for NPIV
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find_host()
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{
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unset host
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for host in /proc/scsi/qla2xxx/*; do
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if grep -q $1 $host; then
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host=${host##*/}
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return
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fi
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done
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}
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# Find NPIV for dev
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find_sdev_rev()
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{
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unset npiv
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for host in /proc/scsi/qla2xxx/*; do
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h=${host##*/}
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if test ! -L /sys/class/scsi_device/$h*:0/device/block*; then
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continue
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fi
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dev=`readlink /sys/class/scsi_device/$h*:0/device/block*`
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dev=${dev##*/}
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if test $dev = $1; then
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npiv=`grep adapter-port= $host`
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npiv=${npiv##*=}
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npiv=${npiv%;}
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return
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hostno=${1/*host/}
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for sdev in /sys/class/scsi_device/${hostno}:*:$3 ; do
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if test -e $sdev/device/../fc_trans*/port_name ; then
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tgtwwpn=`cat $sdev/device/../fc_trans*/port_name | sed -e s/^0x//`
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if test $tgtwwpn = $2 ; then
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if test -e $sdev/device/block* ; then
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dev=`readlink $sdev/device/block*`
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dev=${dev##*/}
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return
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fi
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fi
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fi
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done
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}
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find_qla
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test -z "$qla" && exit 2
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# Look for the NPIV vhost based on a scsi "sdX" name
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# $1 is the "sdX" name
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find_vhost_from_dev()
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{
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unset vhost
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hostno=`readlink /sys/block/$1/device`
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hostno=${hostno##*/}
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hostno=${hostno%%:*}
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if test -z "$hostno" ; then return; fi
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vhost="host"$hostno
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}
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# We're about to terminate a vhost based on a scsi device
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# Flush all nodes on that vhost as they are about to go away
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# $1 is the vhost
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flush_nodes_on_vhost()
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{
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if test ! -x /sbin/blockdev ; then return; fi
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hostno=${1/*host/}
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for sdev in /sys/class/scsi_device/${hostno}:* ; do
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if test -e $sdev/device/block* ; then
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dev=`readlink $sdev/device/block*`
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dev=${dev##*/}
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dev="/dev/"$dev
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if test -n "$dev"; then
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blockdev --flushbufs $dev
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fi
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fi
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done
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}
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# Terminate a NPIV vhost
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# $1 is vhost
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delete_vhost()
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{
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# use upstream interface
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for vport in /sys/class/fc_vports/* ; do
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if test -e $vport/device/$1 ; then
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if test -e $vport/vport_delete ; then
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echo "1" > $vport/vport_delete
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if test $? -ne 0 ; then exit 6; fi
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sleep 4
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return
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fi
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fi
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done
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# use vendor specific interface
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# Emulex
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if test -e /sys/class/fc_host/$1/device/../scsi_host*/lpfc_drvr_version ; then
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shost=`ls -1d /sys/class/fc_host/$1/device/../scsi_host* | sed s/.*scsi_host://`
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vportwwpn=`cat /sys/class/fc_host/$1/port_name | sed s/^0x//`
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vportwwnn=`cat /sys/class/fc_host/$1/node_name | sed s/^0x//`
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echo "$vportwwpn:$vportwwnn" > /sys/class/scsi_host/$shost/vport_delete
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if test $? -ne 0 ; then exit 6; fi
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sleep 4
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return
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fi
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# Qlogic
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if test -e /sys/class/fc_host/$1/device/../scsi_host*/driver_version ; then
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shost=`ls -1d /sys/class/fc_host/$1/device/../scsi_host* | sed s/.*scsi_host://`
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vportwwpn=`cat /sys/class/fc_host/$1/port_name | sed s/^0x//`
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vportwwnn=`cat /sys/class/fc_host/$1/node_name | sed s/^0x//`
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echo "$vportwwpn:$vportwwnn" > /sys/class/scsi_host/$shost/vport_delete
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if test $? -ne 0 ; then exit 6; fi
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sleep 4
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return
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fi
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exit 6
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}
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case "$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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# FABRIC-VPWWPN-VPWWNN-TGTWWPN-LUN#
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# arg 2 - Fabric Name
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# arg 3 - VPORT's WWPN
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# arg 4 - VPORT's WWNN
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# arg 5 - Target's WWPN
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# arg 6 - 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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#par=$2
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NPIV=$par
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find_sdev $NPIV
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if test -z "$dev"; then
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echo "scsi-qlavportc=$NPIV" > $qla
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NPIVARGS=$par;
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LUN=${NPIVARGS##*-*-*-*-}; NPIVARGS=${NPIVARGS%-*}
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if test $LUN = $NPIVARGS ; then exit 1; fi
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TGTWWPN=${NPIVARGS##*-*-*-}; NPIVARGS=${NPIVARGS%-*}
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if test $TGTWWPN = $NPIVARGS ; then exit 1; fi
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VPORTWWNN=${NPIVARGS##*-*-}; NPIVARGS=${NPIVARGS%-*}
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if test $VPORTWWNN = $NPIVARGS ; then exit 1; fi
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VPORTWWPN=${NPIVARGS##*-}; NPIVARGS=${NPIVARGS%-*}
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if test $VPORTWWPN = $NPIVARGS ; then exit 1; fi
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FABRICNM=$NPIVARGS
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# Ensure we compare everything using lower-case hex characters
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TGTWWPN=`echo $TGTWWPN | tr A-Z a-z`
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VPORTWWPN=`echo $VPORTWWPN | tr A-Z a-z`
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VPORTWWNN=`echo $VPORTWWNN | tr A-Z a-z`
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FABRICNM=`echo $FABRICNM | tr A-Z a-z`
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find_vhost $VPORTWWPN
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if test -z "$vhost" ; then
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create_vport $FABRICNM $VPORTWWPN $VPORTWWNN
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if [ $? -ne 0 ] ; then exit 2; fi
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sleep 8
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find_host $NPIV
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# echo "/sys/class/scsi_host/host$host/scan"
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echo "- - -" > /sys/class/scsi_host/host$host/scan
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sleep 1
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find_sdev $NPIV
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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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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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xenstore-write $XENBUS_PATH/node /dev/$dev
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write_dev /dev/$dev
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exit 0
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fi
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exit 1
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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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#node=$2
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dev=$node; dev=${dev#/dev/}
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find_sdev_rev $dev
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if test -x /sbin/blockdev -a -n "$node"; then blockdev --flushbufs $node; fi
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test -z "$npiv" && exit 2
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# echo "scsi-qlavportd" > $qla
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echo "scsi-qlavportd=$npiv" > $qla
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sleep 4
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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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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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exit 0
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;;
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esac
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