111 lines
2.7 KiB
Bash
111 lines
2.7 KiB
Bash
#!/bin/bash
|
|
|
|
# Usage: block-iscsi [add tgtname | remove dev]
|
|
#
|
|
# This assumes you're running a correctly configured
|
|
# iscsi target (server) at the other end!
|
|
# Note that we assume that the passwords for discovery (if needed)
|
|
# are in /etc/iscsid.conf
|
|
# and the node session passwords (if required) in the
|
|
# open-iscsi database below /var/lib/open-iscsi/node.db
|
|
#
|
|
# (c) Kurt Garloff <kurt@garloff.de>, 2006-09-04, GNU GPL
|
|
|
|
dir=$(dirname "$0")
|
|
. "$dir/block-common.sh"
|
|
#command=$1
|
|
|
|
#echo "DBG:xen/scripts/block-iscsi $1 $2 XENBUS_PATH=$XENBUS_PATH $par $node"
|
|
|
|
#write_dev()
|
|
#{
|
|
# echo "$1"
|
|
#}
|
|
|
|
sess_lun_to_bdev()
|
|
{
|
|
unset dev
|
|
cnt=`ls -d $1/device/target*/*:0:*:$2/block* | wc -l`
|
|
nm=`ls -d $1/device/target*/*:0:*:$2/block*`
|
|
for n in $nm; do
|
|
d=`readlink $n`
|
|
d=${d##*/}
|
|
if test -z "$dev"; then dev=$d; else dev="$dev $d"; fi
|
|
done
|
|
}
|
|
|
|
# Arguments: IQN name, LUN
|
|
find_sdev()
|
|
{
|
|
unset dev
|
|
lun=${2:-0}
|
|
for session in /sys/class/iscsi_session/session*; do
|
|
if ! test -e $session; then return; fi
|
|
if test $1 = `cat $session/targetname`; then
|
|
sess_lun_to_bdev $session $lun
|
|
#echo "fs: $1[$lun] ($cnt) -> $dev" 1>&2
|
|
return
|
|
fi
|
|
done
|
|
}
|
|
|
|
find_sdev_rev()
|
|
{
|
|
unset tgt
|
|
for session in /sys/class/iscsi_session/session*; do
|
|
if ! test -e $session; then return; fi
|
|
sess_lun_to_bdev $session "*"
|
|
for d in $dev; do
|
|
if test "$d" = "$1"; then
|
|
tgt=`cat $session/targetname`
|
|
#echo "fsr: $2 -> $tgt ($cnt)" 1>&2
|
|
return
|
|
fi
|
|
done
|
|
done
|
|
}
|
|
|
|
case "$command" in
|
|
add)
|
|
# load modules and start iscsid
|
|
/etc/init.d/open-iscsi status >/dev/null 2>&1 ||
|
|
{ /etc/init.d/open-iscsi start >/dev/null 2>&1; sleep 1; }
|
|
# list of targets on node
|
|
par=`xenstore-read $XENBUS_PATH/params` || true
|
|
TGTID=$par; TGTID=${TGTID//@/:}; TGTID=${TGTID//\#/,}
|
|
LUN=${TGTID##*,}; TGTID=${TGTID%,*}
|
|
if test $LUN = $TGTID; then unset LUN; fi
|
|
#echo "add $TGTID lun $LUN" 1>&2
|
|
while read port uuid; do
|
|
if test $uuid = $TGTID; then
|
|
find_sdev $TGTID $LUN
|
|
if test -z "$dev"; then
|
|
#echo iscsiadm -m node -T $uuid -p $port -l 1>&2
|
|
iscsiadm -m node -T $uuid -p $port -l || exit 2
|
|
usleep 100000
|
|
find_sdev $TGTID $LUN
|
|
fi
|
|
xenstore-write $XENBUS_PATH/node /dev/$dev
|
|
write_dev /dev/$dev
|
|
exit 0
|
|
fi
|
|
done < <(iscsiadm -m node)
|
|
exit 1
|
|
;;
|
|
remove)
|
|
node=`xenstore-read $XENBUS_PATH/node` || true
|
|
dev=$node; dev=${dev#/dev/}
|
|
find_sdev_rev $dev
|
|
#echo "remove $dev:$tgt" 1>&2
|
|
if test -x /sbin/blockdev -a -n "$node"; then blockdev --flushbufs $node; fi
|
|
test -z "$tgt" && exit 2
|
|
while read port uuid; do
|
|
if test $uuid = $tgt; then
|
|
iscsiadm -m node -T $uuid -p $port -u
|
|
exit 0
|
|
fi
|
|
done < <(iscsiadm -m node)
|
|
exit 1
|
|
;;
|
|
esac
|