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Direktori : /lib/dracut/modules.d/95iscsi/ |
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 }