| Current Path : /lib/dracut/modules.d/95iscsi/ |
Linux gator3171.hostgator.com 4.19.286-203.ELK.el7.x86_64 #1 SMP Wed Jun 14 04:33:55 CDT 2023 x86_64 |
| Current File : //lib/dracut/modules.d/95iscsi/module-setup.sh |
#!/bin/bash
# -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-
# ex: ts=8 sw=4 sts=4 et filetype=sh
check() {
local _rootdev
# If our prerequisites are not met, fail anyways.
require_binaries iscsistart hostname iscsi-iname || return 1
# If hostonly was requested, fail the check if we are not actually
# booting from root.
is_iscsi() {
local _dev=$1
[[ -L "/sys/dev/block/$_dev" ]] || return
cd "$(readlink -f "/sys/dev/block/$_dev")"
until [[ -d sys || -d iscsi_session ]]; do
cd ..
done
[[ -d iscsi_session ]]
}
[[ $hostonly ]] || [[ $mount_needs ]] && {
pushd . >/dev/null
for_each_host_dev_and_slaves is_iscsi
local _is_iscsi=$?
popd >/dev/null
[[ $_is_iscsi == 0 ]] || return 255
}
return 0
}
get_ibft_mod() {
local ibft_mac=$1
local iface_mac iface_mod
# Return the iSCSI offload module for a given MAC address
for iface_desc in $(iscsiadm -m iface | cut -f 2 -d ' '); do
iface_mod=${iface_desc%%,*}
iface_mac=${iface_desc#*,}
iface_mac=${iface_mac%%,*}
if [ "$ibft_mac" = "$iface_mac" ] ; then
echo $iface_mod
return 0
fi
done
}
install_ibft() {
# When iBFT / iscsi_boot is detected:
# - Use 'ip=ibft' to set up iBFT network interface
# Note: bnx2i is using a different MAC address of iSCSI offloading
# so the 'ip=ibft' parameter must not be set
# - specify firmware booting cmdline parameter
for d in /sys/firmware/* ; do
if [ -d ${d}/ethernet0 ] ; then
read ibft_mac < ${d}/ethernet0/mac
ibft_mod=$(get_ibft_mod $ibft_mac)
fi
if [ -z "$ibft_mod" ] && [ -d ${d}/ethernet1 ] ; then
read ibft_mac < ${d}/ethernet1/mac
ibft_mod=$(get_ibft_mod $ibft_mac)
fi
if [ -d ${d}/initiator ] ; then
if [ ${d##*/} = "ibft" ] && [ "$ibft_mod" != "bnx2i" ] ; then
echo -n "ip=ibft "
fi
echo -n "rd.iscsi.firmware=1"
fi
done
}
depends() {
echo network rootfs-block
}
installkernel() {
local _arch=$(uname -m)
instmods bnx2i qla4xxx cxgb3i cxgb4i be2iscsi
hostonly="" instmods iscsi_tcp iscsi_ibft crc32c iscsi_boot_sysfs
iscsi_module_filter() {
local _funcs='iscsi_register_transport'
# subfunctions inherit following FDs
local _merge=8 _side2=9
function bmf1() {
local _f
while read _f; do
case "$_f" in
*.ko) [[ $(< $_f) =~ $_funcs ]] && echo "$_f" ;;
*.ko.gz) [[ $(gzip -dc <$_f) =~ $_funcs ]] && echo "$_f" ;;
*.ko.xz) [[ $(xz -dc <$_f) =~ $_funcs ]] && echo "$_f" ;;
esac
done
return 0
}
function rotor() {
local _f1 _f2
while read _f1; do
echo "$_f1"
if read _f2; then
echo "$_f2" 1>&${_side2}
fi
done | bmf1 1>&${_merge}
return 0
}
# Use two parallel streams to filter alternating modules.
set +x
eval "( ( rotor ) ${_side2}>&1 | bmf1 ) ${_merge}>&1"
[[ $debug ]] && set -x
return 0
}
{ find_kernel_modules_by_path drivers/scsi; if [ "$_arch" = "s390" -o "$_arch" = "s390x" ]; then find_kernel_modules_by_path drivers/s390/scsi; fi;} \
| iscsi_module_filter | instmods
}
cmdline() {
install_ibft
}
# called by dracut
install() {
inst_multiple umount iscsistart hostname iscsi-iname
inst_multiple -o iscsiuio
inst_libdir_file 'libgcc_s.so*'
# Detect iBFT and perform mandatory steps
if [[ $hostonly_cmdline == "yes" ]] ; then
local _ibftconf=$(install_ibft)
[[ $_ibftconf ]] && printf "%s\n" "$_ibftconf" >> "${initdir}/etc/cmdline.d/95iscsi.conf"
fi
inst_hook cmdline 90 "$moddir/parse-iscsiroot.sh"
inst_hook cleanup 90 "$moddir/cleanup-iscsi.sh"
inst "$moddir/iscsiroot.sh" "/sbin/iscsiroot"
if ! dracut_module_included "systemd"; then
inst "$moddir/mount-lun.sh" "/bin/mount-lun.sh"
else
inst_multiple -o \
$systemdsystemunitdir/iscsi.service \
$systemdsystemunitdir/iscsid.service \
$systemdsystemunitdir/iscsid.socket \
$systemdsystemunitdir/iscsiuio.service \
$systemdsystemunitdir/iscsiuio.socket \
iscsiadm iscsid
mkdir -p "${initdir}/$systemdsystemunitdir/sockets.target.wants"
for i in \
iscsiuio.socket \
; do
ln_r "$systemdsystemunitdir/${i}" "$systemdsystemunitdir/sockets.target.wants/${i}"
done
mkdir -p "${initdir}/$systemdsystemunitdir/basic.target.wants"
for i in \
iscsid.service \
; do
ln_r "$systemdsystemunitdir/${i}" "$systemdsystemunitdir/basic.target.wants/${i}"
done
# Make sure iscsid is started after dracut-cmdline and ready for the initqueue
mkdir -p "${initdir}/$systemdsystemunitdir/iscsid.service.d"
(
echo "[Unit]"
echo "After=dracut-cmdline.service"
echo "Before=dracut-initqueue.service"
) > "${initdir}/$systemdsystemunitdir/iscsid.service.d/dracut.conf"
fi
inst_dir /var/lib/iscsi
dracut_need_initqueue
}