/usr/lib/dracut/modules.d/95iscsi/iscsiroot.sh is in dracut-network 040+1-1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 | #!/bin/sh
#
# This implementation is incomplete: Discovery mode is not implemented and
# the argument handling doesn't follow currently agreed formats. This is mainly
# because rfc4173 does not say anything about iscsi_initiator but open-iscsi's
# iscsistart needs this.
#
type getarg >/dev/null 2>&1 || . /lib/dracut-lib.sh
type parse_iscsi_root >/dev/null 2>&1 || . /lib/net-lib.sh
type write_fs_tab >/dev/null 2>&1 || . /lib/fs-lib.sh
PATH=/usr/sbin:/usr/bin:/sbin:/bin
# Huh? Empty $1?
[ -z "$1" ] && exit 1
# Huh? Empty $2?
[ -z "$2" ] && exit 1
# Huh? Empty $3? This isn't really necessary, since NEWROOT isn't
# used here. But let's be consistent
[ -z "$3" ] && exit 1
# root is in the form root=iscsi:[<servername>]:[<protocol>]:[<port>]:[<LUN>]:<targetname>
netif="$1"
iroot="$2"
# If it's not iscsi we don't continue
[ "${iroot%%:*}" = "iscsi" ] || exit 1
iroot=${iroot#iscsi}
iroot=${iroot#:}
# XXX modprobe crc32c should go in the cmdline parser, but I haven't yet
# figured out a way how to check whether this is built-in or not
modprobe crc32c 2>/dev/null
if [ -e /sys/module/bnx2i ] && ! [ -e /tmp/iscsiuio-started ]; then
iscsiuio
> /tmp/iscsiuio-started
fi
handle_firmware()
{
if ! [ -e /tmp/iscsistarted-firmware ]; then
if ! iscsistart -f; then
warn "iscistart: Could not get list of targets from firmware."
return 1
fi
for p in $(getargs rd.iscsi.param -d iscsi_param); do
iscsi_param="$iscsi_param --param $p"
done
if ! iscsistart -b $iscsi_param; then
warn "'iscsistart -b $iscsi_param' failed"
fi
if [ -d /sys/class/iscsi_session ]; then
echo 'started' > "/tmp/iscsistarted-iscsi:"
echo 'started' > "/tmp/iscsistarted-firmware"
else
return 1
fi
need_shutdown
fi
return 0
}
handle_netroot()
{
local iscsi_initiator iscsi_target_name iscsi_target_ip iscsi_target_port
local iscsi_target_group iscsi_protocol iscsirw iscsi_lun
local iscsi_username iscsi_password
local iscsi_in_username iscsi_in_password
local iscsi_iface_name iscsi_netdev_name
local iscsi_param
local p
# override conf settings by command line options
arg=$(getargs rd.iscsi.initiator -d iscsi_initiator=)
[ -n "$arg" ] && iscsi_initiator=$arg
arg=$(getargs rd.iscsi.target.name -d iscsi_target_name=)
[ -n "$arg" ] && iscsi_target_name=$arg
arg=$(getargs rd.iscsi.target.ip -d iscsi_target_ip)
[ -n "$arg" ] && iscsi_target_ip=$arg
arg=$(getargs rd.iscsi.target.port -d iscsi_target_port=)
[ -n "$arg" ] && iscsi_target_port=$arg
arg=$(getargs rd.iscsi.target.group -d iscsi_target_group=)
[ -n "$arg" ] && iscsi_target_group=$arg
arg=$(getargs rd.iscsi.username -d iscsi_username=)
[ -n "$arg" ] && iscsi_username=$arg
arg=$(getargs rd.iscsi.password -d iscsi_password)
[ -n "$arg" ] && iscsi_password=$arg
arg=$(getargs rd.iscsi.in.username -d iscsi_in_username=)
[ -n "$arg" ] && iscsi_in_username=$arg
arg=$(getargs rd.iscsi.in.password -d iscsi_in_password=)
[ -n "$arg" ] && iscsi_in_password=$arg
for p in $(getargs rd.iscsi.param -d iscsi_param); do
iscsi_param="$iscsi_param --param $p"
done
parse_iscsi_root "$1" || return 1
# XXX is this needed?
getarg ro && iscsirw=ro
getarg rw && iscsirw=rw
fsopts=${fsopts:+$fsopts,}${iscsirw}
if [ -z $iscsi_initiator ]; then
# XXX Where are these from?
[ -f /etc/initiatorname.iscsi ] && . /etc/initiatorname.iscsi
[ -f /etc/iscsi/initiatorname.iscsi ] && . /etc/iscsi/initiatorname.iscsi
iscsi_initiator=$InitiatorName
# XXX rfc3720 says 'SCSI Initiator Name: The iSCSI Initiator Name specifies
# the worldwide unique name of the initiator.' Could we use hostname/ip
# if missing?
fi
if [ -z $iscsi_initiator ]; then
if [ -f /sys/firmware/ibft/initiator/initiator-name ]; then
iscsi_initiator=$(while read line; do echo $line;done < /sys/firmware/ibft/initiator/initiator-name)
fi
fi
if [ -z $iscsi_target_port ]; then
iscsi_target_port=3260
fi
if [ -z $iscsi_target_group ]; then
iscsi_target_group=1
fi
if [ -z $iscsi_initiator ]; then
# XXX is this correct?
iscsi_initiator=$(iscsi-iname)
fi
if [ -z $iscsi_lun ]; then
iscsi_lun=0
fi
echo "InitiatorName='$iscsi_initiator'" > /run/initiatorname.iscsi
ln -fs /run/initiatorname.iscsi /dev/.initiatorname.iscsi
# FIXME $iscsi_protocol??
if [ "$root" = "dhcp" ]; then
# if root is not specified try to mount the whole iSCSI LUN
printf 'SYMLINK=="disk/by-path/*-iscsi-*-%s", SYMLINK+="root"\n' $iscsi_lun >> /etc/udev/rules.d/99-iscsi-root.rules
udevadm control --reload
write_fs_tab /dev/root
wait_for_dev -n /dev/root
# install mount script
[ -z "$DRACUT_SYSTEMD" ] && \
echo "iscsi_lun=$iscsi_lun . /bin/mount-lun.sh " > $hookdir/mount/01-$$-iscsi.sh
fi
# force udevsettle to break
> $hookdir/initqueue/work
iscsistart -i $iscsi_initiator -t $iscsi_target_name \
-g $iscsi_target_group -a $iscsi_target_ip \
-p $iscsi_target_port \
${iscsi_username:+-u $iscsi_username} \
${iscsi_password:+-w $iscsi_password} \
${iscsi_in_username:+-U $iscsi_in_username} \
${iscsi_in_password:+-W $iscsi_in_password} \
${iscsi_iface_name:+--param iface.iscsi_ifacename=$iscsi_iface_name} \
${iscsi_netdev_name:+--param iface.net_ifacename=$iscsi_netdev_name} \
${iscsi_param} \
|| :
netroot_enc=$(str_replace "$1" '/' '\2f')
echo 'started' > "/tmp/iscsistarted-iscsi:${netroot_enc}"
}
ret=0
# loop over all netroot parameter
if getarg netroot; then
for nroot in $(getargs netroot); do
[ "${nroot%%:*}" = "iscsi" ] || continue
nroot="${nroot##iscsi:}"
if [ -n "$nroot" ]; then
handle_netroot "$nroot"
ret=$(($ret + $?))
fi
done
if getargbool 0 rd.iscsi.firmware -d -y iscsi_firmware ; then
handle_firmware
ret=$(($ret + $?))
fi
else
if [ -n "$iroot" ]; then
handle_netroot "$iroot"
ret=$?
else
if getargbool 0 rd.iscsi.firmware -d -y iscsi_firmware ; then
handle_firmware
ret=$?
fi
fi
fi
need_shutdown
# now we have a root filesystem somewhere in /dev/sda*
# let the normal block handler handle root=
exit $ret
|