modules.d/95iscsi/module-setup.sh

   1 #!/bin/bash
   2 # -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-
   3 # ex: ts=8 sw=4 sts=4 et filetype=sh
   4
   5 check() {
   6     local _rootdev
   7     # If our prerequisites are not met, fail anyways.
   8     type -P iscsistart hostname iscsi-iname >/dev/null || return 1
   9
  10     # If hostonly was requested, fail the check if we are not actually
  11     # booting from root.
  12
  13     . $dracutfunctions
  14
  15     [[ $debug ]] && set -x
  16
  17     is_iscsi() (
  18         [[ -L /sys/dev/block/$1 ]] || return
  19         cd "$(readlink -f /sys/dev/block/$1)"
  20         until [[ -d sys || -d iscsi_session ]]; do
  21             cd ..
  22         done
  23         [[ -d iscsi_session ]]
  24     )
  25
  26     [[ $hostonly ]] && {
  27         _rootdev=$(find_root_block_device)
  28         if [[ $_rootdev ]]; then
  29             # root lives on a block device, so we can be more precise about
  30             # hostonly checking
  31             check_block_and_slaves is_iscsi "$_rootdev" || return 1
  32         else
  33             return 1
  34         fi
  35     }
  36     return 0
  37 }
  38
  39 depends() {
  40     echo network rootfs-block
  41 }
  42
  43 installkernel() {
  44     instmods iscsi_tcp iscsi_ibft crc32c
  45     iscsi_module_test() {
  46         local _iscsifuncs='iscsi_register_transport'
  47         fgrep -q "$_iscsifuncs" "$1"
  48     }
  49     instmods $(filter_kernel_modules iscsi_module_test)
  50 }
  51
  52 install() {
  53     dracut_install umount
  54     inst iscsistart
  55     inst hostname
  56     inst iscsi-iname
  57     inst_hook cmdline 90 "$moddir/parse-iscsiroot.sh"
  58     inst "$moddir/iscsiroot" "/sbin/iscsiroot"
  59     inst "$moddir/mount-lun.sh" "/bin/mount-lun.sh"
  60 }