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#!/bin/sh
#
# Copyright © 2006-2007 Martin F. Krafft <madduck@debian.org>
# based on the scripts in the initramfs-tools package.
# released under the terms of the Artistic Licence.
#
set -eu
PREREQ="udev_helper"
prereqs()
{
echo "$PREREQ"
}
case ${1:-} in
prereqs)
prereqs
exit 0
;;
esac
. /scripts/functions
maybe_break pre-mdadm
if [ -e /scripts/local-top/md ]; then
log_warning_msg "old md initialisation script found, getting out of its way..."
exit 1
fi
MDADM=/sbin/mdadm
[ -x "$MDADM" ] || exit 0
verbose()
{
case "$quiet" in y*|Y*|1|t*|T*)
return 1;;
*)
return 0;;
esac
}
MD_DEVS=all
MD_MODULES='linear multipath raid0 raid1 raid456 raid5 raid6 raid10'
[ -s /conf/conf.d/md ] && . /conf/conf.d/md
verbose && log_begin_msg Loading MD modules
for module in ${MD_MODULES:-}; do
if modprobe --syslog "$module"; then
verbose && log_success_msg "loaded module ${module}."
else
log_failure_msg "failed to load module ${module}."
fi
done
log_end_msg
if [ ! -f /proc/mdstat ]; then
verbose && panic "cannot initialise MD subsystem (/proc/mdstat missing)"
exit 1
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 $CONFIG ]; then
verbose && log_success_msg "mdadm.conf created."
else
verbose && log_failure_msg "could not create mdadm.conf, the boot will likely fail."
fi
MD_DEVS=all
fi
# prevent writes/syncs so that resuming works (#415441).
echo 1 > /sys/module/md_mod/parameters/start_ro
if [ "$MD_DEVS" = all ]; then
verbose && log_begin_msg "Assembling all MD arrays"
extra_args=''
[ -n "$MD_HOMEHOST" ] && \
extra_args="--homehost='$MD_HOMEHOST' --auto-update-homehost"
if $MDADM --assemble --scan --run --auto=yes $extra_args; then
verbose && log_success_msg "assembled all arrays."
else
log_failure_msg "failed to assemble all arrays."
fi
verbose && log_end_msg
elif [ "$MD_DEVS" != none ]; then
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 $dev"
fi
verbose && log_end_msg
done
fi
maybe_break post-mdadm
case "$ROOT" in
/dev/disk/by-id/md-*)
MAXWAIT=10
if [ ! -L "$ROOT" ]; then
verbose && log_begin_msg "Waiting for udev array link to $ROOT "
while [ ! -L "$ROOT" ] && [ $MAXWAIT -gt 0 ]; do
verbose && echo -n . >&2
sleep 1
MAXWAIT=$((MAXWAIT - 1))
done
if [ ! -L "$ROOT" ]; then
verbose && log_failure_msg "timed out after $MAXWAIT seconds."
exit 1
else
verbose && log_success_msg "udev array link to $ROOT appeared."
fi
fi
;;
esac
exit 0
|
