diff options
Diffstat (limited to 'debian/initramfs')
| -rw-r--r-- | debian/initramfs/hook | 266 | ||||
| -rw-r--r-- | debian/initramfs/script.local-top | 101 |
2 files changed, 367 insertions, 0 deletions
diff --git a/debian/initramfs/hook b/debian/initramfs/hook new file mode 100644 index 00000000..85bad65e --- /dev/null +++ b/debian/initramfs/hook @@ -0,0 +1,266 @@ +#!/bin/sh +# +# Copyright © 2006-2008 Martin F. Krafft <madduck@debian.org>, +# 2012 Michael Tokarev <mjt@tls.msk.ru> +# based on the scripts in the initramfs-tools package. +# released under the terms of the Artistic Licence. +# +set -eu + +PREREQ= +prereqs() +{ + echo "$PREREQ" +} + +case "${1:-}" in + prereqs) + prereqs + exit 0 + ;; +esac + +is_true() +{ + case "${1:-}" in + [Yy]es|[Yy]|1|[Tt]rue|[Tt]) return 0;; + *) return 1;; + esac +} + +write() +{ + local PREFIX; PREFIX=$1; shift + echo "${PREFIX}: mdadm: $@" >&2 +} + +info() +{ + is_true ${VERBOSE:-false} && write I "$@" || : +} + +warn() +{ + write W "$@" +} + +err() +{ + write E "$@" +} + +MDADM=/sbin/mdadm +MDMON=/sbin/mdmon +[ -x "$MDADM" ] || exit 0 + +[ -r /usr/share/initramfs-tools/hook-functions ] || exit 0 +. /usr/share/initramfs-tools/hook-functions + +# copy the binary as early as possible +copy_exec $MDADM /sbin +copy_exec $MDMON /sbin + +# copy all modules into the initramfs, just for safety. +# we copy raid456 / raid5+raid6 because the hook script just won't do +# anything when the module cannot be found. +modules="linear multipath raid0 raid1 raid456 raid5 raid6 raid10" +for mod in $modules; do manual_add_modules $mod; done + +# read in the configuration +CONFIG=/etc/mdadm/mdadm.conf +ALTCONFIG=/etc/mdadm.conf +[ ! -f $CONFIG ] && [ -f $ALTCONFIG ] && CONFIG=$ALTCONFIG || : + +DEBIANCONFIG=/etc/default/mdadm +INITRDSTART=all +[ -s $DEBIANCONFIG ] && . $DEBIANCONFIG +[ -z "$INITRDSTART" ] && INITRDSTART=none + +DESTMDADMCONF=$DESTDIR/etc/mdadm/mdadm.conf +DESTCONFIG=$DESTDIR/conf/mdadm + +if [ -f $CONFIG ]; then + homehost="$(sed -ne 's,^[[:space:]]*HOMEHOST[[:space:]]*,,p' $CONFIG)" +fi +if [ -z "${homehost:-}" ] || [ "${homehost:-}" = '<system>' ]; then + echo "MD_HOMEHOST='$(hostname)'" > $DESTCONFIG +fi + +install_config() +{ + # install the configuration file + mkdir -p ${2%/*} + # only copy ARRAY/DEVICE/HOMEHOST lines, and merge continuation lines into one + if [ -f "$1" ] ; then + sed -e :a -re '$!N;s/\n[[:space:]]+/ /;ta' -ne '/^(ARRAY|DEVICE|HOMEHOST)/P;D' $1 > $2 + fi +} + +if [ ! -f $CONFIG ]; then + # there is no configuration file, so let's create one + + if /usr/share/mdadm/mkconf generate $CONFIG; then + # all is well + install_config $CONFIG $DESTMDADMCONF + info "auto-generated the mdadm.conf configuration file." + else + # we failed to auto-generate, so let the emergency procedure take over + warn "failed to auto-generate the mdadm.conf file." + fi + +else + + if grep -q '^ARRAY' $CONFIG; then + + # this is the ideal case + install_config $CONFIG $DESTMDADMCONF + info "using configuration file: $CONFIG" + + else + + # the file defines no ARRAYs. We better create a temporary file to be sure. + + warn "$CONFIG defines no arrays." + + mkdir --parents ${DESTMDADMCONF%/*} + tmpfile="${DESTMDADMCONF}.tmp" + if /usr/share/mdadm/mkconf > $tmpfile; then + # all is well, we now have a temporary configuration file + info "auto-generated temporary mdadm.conf configuration file." + install_config $tmpfile $DESTMDADMCONF + else + # stuff's really broke, as we failed to generate a temporary file. + # let's hope the unchecked file works, provided it contains at least one + # ARRAY statement... + warn "failed to auto-generate temporary mdadm.conf file." + if grep -q '^ARRAY' $CONFIG; then + warn "using the unchecked file and hoping for the best..." + install_config $CONFIG $DESTMDADMCONF + fi + fi + rm -f $tmpfile + + fi + +fi + +# if at this point, $DESTMDADMCONF does not exist or it does not contain any +# ARRAY statements, we must let the initramfs handle stuff. +if [ ! -f $DESTMDADMCONF ]; then + warn "no configuration file available." + info "letting initramfs assemble auto-detected arrays." + exit 0 +elif ! grep -q '^ARRAY' $DESTMDADMCONF; then + warn "no arrays defined in configuration file." + info "letting initramfs assemble auto-detected arrays." + exit 0 +else + # obtain devices list from config file, honouring multiline entries + devices="$( + dev= + while read line; do + case "$line" in + (ARRAY*) :;; + (*) continue;; + esac + for atom in $line; do + case "$atom" in + (/dev*) dev=$atom;; + esac + done + + # /dev/mdX and /dev/md/X are the same, really + case "$dev" in + "") continue ;; + (/dev/md/*) alt=/dev/md${dev##*/};; + (/dev/md*) alt=/dev/md/${dev#/dev/md};; + (*) + err "unknown device encountered: $dev" + warn_emergency + exit 0 + ;; + esac + if [ ! -b "$dev" ] && [ -b "$alt" ]; then + dev="$alt" + fi + + echo "$dev" + done < $DESTMDADMCONF)" || exit $? +fi + +if [ "$INITRDSTART" != none ] && [ -n "$devices" ]; then + + devs= + for dev in $devices; do + case "$INITRDSTART " in + all|*${dev}[[:space:]]*) + case "$devs " in # uniquiness + (*${dev}\ *) :;; + (*) devs="${devs:+$devs }$dev" ;; + esac + ;; + *) :;; + esac + done + + # make sure the configuration file knows about all running devices + $MDADM --detail --scan | while read array device params; do + uuid=${params#*UUID=}; uuid=${uuid%% *} + if ! grep -qi "uuid=$uuid" $DESTMDADMCONF; then + warn "the array $device with UUID $uuid" + warn "is currently active, but it is not listed in mdadm.conf. if" + warn "it is needed for boot, then YOUR SYSTEM IS NOW UNBOOTABLE!" + warn "please inspect the output of /usr/share/mdadm/mkconf, compare" + warn "it to $CONFIG, and make the necessary changes." + fi + done + + for i in $INITRDSTART; do + case "$INITRDSTART" in all) break;; *) :;; esac + case "$devs" in + *${i}*) continue;; + *) :;; + esac + + warn "I am supposed to start $i from the initial ramdisk," + warn "yet I cannot find the array in the configuration file." + warn "I am thus reverting to starting all arrays." + INITRDSTART=all + break + done + + if [ "$INITRDSTART" = all ]; then + echo "MD_DEVS=all" >> $DESTCONFIG + else + echo "MD_DEVS='$devs'" >> $DESTCONFIG + fi + + if [ "$INITRDSTART" = all ]; then + info "will start all available MD arrays from the initial ramdisk." + else + for i in $devs; do + info "will start MD array $i from the initial ramdisk." + done + fi + + # Copy udev rules, which udev no longer does + for rules_file in 63-md-raid-arrays.rules 64-md-raid-assembly.rules + do + for rules_folder in /lib/udev/rules.d /etc/udev/rules.d; do + if [ -f $rules_folder/$rules_file ]; then + mkdir -p $DESTDIR$rules_folder + cp $rules_folder/$rules_file $DESTDIR$rules_folder/$rules_file + fi + done + done + +else + echo "MD_DEVS=none" >> $DESTCONFIG + info "no MD arrays will be started from the initial ramdisk." +fi + +# only output this on Debian systems +[ -s /etc/default/mdadm ] && \ + info 'use `dpkg-reconfigure --priority=low mdadm` to change this.' + +exit 0 diff --git a/debian/initramfs/script.local-top b/debian/initramfs/script.local-top new file mode 100644 index 00000000..9450bb72 --- /dev/null +++ b/debian/initramfs/script.local-top @@ -0,0 +1,101 @@ +#!/bin/sh +# +# Copyright © 2006-2008 Martin F. Krafft <madduck@debian.org>, +# 2012 Michael Tokarev <mjt@tls.msk.ru> +# based on the scripts in the initramfs-tools package. +# released under the terms of the Artistic Licence. +# +set -eu + +case ${1:-} in + prereqs) echo "multipath"; exit 0;; +esac + +. /scripts/functions + +maybe_break pre-mdadm + +if [ -e /scripts/local-top/md ]; then + log_warning_msg "old md initialisation script found, getting out of its way..." + exit 0 +fi + +MDADM=/sbin/mdadm +[ -x "$MDADM" ] || exit 0 + +verbose() +{ + case "$quiet" in y*|Y*|1|t*|T*) + return 1;; + *) + return 0;; + esac +} + +MD_DEVS=all +[ -s /conf/mdadm ] && . /conf/mdadm + +if [ "$MD_DEVS" = none ]; then + verbose && + log_warning_msg "INITRDSTART set to \"none\" in /etc/default/mdadm, not assembling raid arrays" + exit 0 +fi + +if [ ! -f /proc/mdstat ] && ! modprobe -q md_mod; then + verbose && log_warning_msg "failed to load module md_mod." +fi +if [ ! -f /proc/mdstat ]; then + verbose && log_warning_msg "cannot initialise MD subsystem (/proc/mdstat missing)" + exit 0 +fi + +# handle /dev/md/X nodes +mkdir -p /dev/md + +CONFIG=/etc/mdadm/mdadm.conf +# in case the hook failed to install a configuration file, this is our last +# attempt... the "emergency procedure"... <drumroll> +if [ ! -e $CONFIG ]; then + log_warning_msg "missing mdadm.conf file, trying to create one..." + mkdir -p ${CONFIG%/*} + echo DEVICE partitions > $CONFIG + $MDADM --examine --scan >> $CONFIG + if [ -s $CONFIG ]; then + verbose && log_success_msg "mdadm.conf created." + else + verbose && log_failure_msg "could not create mdadm.conf, the boot will likely fail." + fi + MD_DEVS=all +fi + +if [ "$MD_DEVS" = all ]; then + + verbose && log_begin_msg "Assembling all MD arrays" + extra_args='' + [ -n "${MD_HOMEHOST:-}" ] && extra_args="--homehost=$MD_HOMEHOST" + if $MDADM --assemble --scan --run --auto=yes${extra_args:+ $extra_args}; then + verbose && log_success_msg "assembled all arrays." + else + log_failure_msg "failed to assemble all arrays." + fi + verbose && log_end_msg + +else + for dev in $MD_DEVS; do + + verbose && log_begin_msg "Assembling MD array $dev" + if $MDADM --assemble --scan --run --auto=yes $dev; then + verbose && log_success_msg "started $dev" + else + log_failure_msg "failed to start $dev" + fi + verbose && log_end_msg + + done +fi + +wait_for_udev 10 + +maybe_break post-mdadm + +exit 0 |