diff options
Diffstat (limited to 'debian/mdrun')
| -rw-r--r-- | debian/mdrun | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/debian/mdrun b/debian/mdrun new file mode 100644 index 00000000..cb63ff3d --- /dev/null +++ b/debian/mdrun @@ -0,0 +1,189 @@ +#!/bin/sh + +# mdrun, (c) Eduard Bloch <blade@debian.org> 2003 + +# Usage: +# Without arguments: autodetect all RAID partitions and activate MDs +# Arguments: [ DEVDIR ] NUMBER UUID [ <NUMBER UUID> ... ] +# a number of number/uuid pairs, where NUMBER is the one from /dev/md/* +# Argument: LIST +# lists all raids in the syntax needed for the pairs (see above) + +# IMPORTANT: create /dev/fs directory if you have devfs support in the kernel +# but do not want to mount it over /dev. Usage of /dev/fs directory will keep +# mdrun away from /dev. + +# If the first argument is a directory, it will be used as a writeable +# temporary directory for device nodes. mdrun needs mknod to create them +# on-the-fly + +# Environment: +# MORERAIDVOLUMES (list of strings) : additional raid disks to scan, +# eg. loop devices + +is_true() +{ + case "$1" in + [Yy]es|[Yy]|1|[Tt]rue) return 0;; + *) return 1; + esac +} + +warn() +{ + echo "$@" >&2 +} + +[ -f /etc/default/mdadm ] && . /etc/default/mdadm +# disabled until the transition is complete +if false && ! is_true $USE_DEPRECATED_MDRUN; then + warn + warn ========================= + warn mdrun deprecation warning + warn ========================= + warn + warn If you are seeing this during boot, please upgrade to a newer + warn version of the initramfs-tools package and ignore the rest of + warn this message. + warn + warn You are running $0, or your system is not properly configured + warn such that $0 is used as a fallback. Due to technical limitations, + warn $0 is deprecated and will be removed in a future relese of mdadm. + warn Please see /usr/share/doc/mdadm/README.mdrun for more info. + warn + + TIMEOUT=15 + if [ -r /dev/stdin ]; then + # cannot use -t or -n, which is not POSIX + read -p'Please hit return to continue...' resp < /dev/stdin >&2 + warn + else + warn "Pausing for $TIMEOUT seconds..." >&2 + sleep $TIMEOUT + fi +fi + +if ! test -e /proc/partitions ; then + echo "/proc not mounted!" + exit 1 +fi + +DEVDIR=/dev + +if [ -d "$1" ] ; then + AUTOCREATE=true + DEVDIR="$1" + shift +fi + +# For people that compile the kernel with devfs (means: different +# proc/partitions content), but without auto-mounting it +if ! uname -r | grep "^2.6" 1>/dev/null && [ -z "$AUTOCREATE" ] && grep " devfs" /proc/filesystems >/dev/null 2>&1 && ! grep "^devfs" /proc/mounts >/dev/null 2>&1 ; then + + mkdir /dev/fs 2>/dev/null + # if we can do it - good, we will use it. Otherwise, use /dev even if it is ugly + + # mount devfs for now to make the device names match, umount later + if [ -d /dev/fs ] ; then + DEVDIR=/dev/fs + fi + mount none $DEVDIR -tdevfs + UMNTDEVFS="umount $DEVDIR" +fi + +# arr(array, index): return contents in array[index]; as with Bourne shell +# in general, there is no easy way to distinguish between index not +# existing and empty string assigned. +arr() { sa_i=`arr_index $2`; eval "echo \"\$$1_${sa_i}\""; unset sa_i; } + +# seterr(array, index, value): assign the given value to array[index]. +setarr() { sa_i=`arr_index $2`; eval "$1_${sa_i}=\"$3\""; unset sa_i; } + +# arr_index(index): make sure the given index is valid for use. +arr_index() { echo $1 | sed -e 's/:/_/g' | sed 's;/;_;g'; } + + +BASE=$DEVDIR/md +export BASE +#devfs +test -d $BASE && BASE=$BASE/ + +next_free_md() { + for raidnr in 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24; do + if ! mdadm -D $BASE$raidnr >/dev/null 2>&1 ; then + echo $BASE$raidnr + return 0 + fi + done + return 1 +} + +listpairs() { + for NUMBER in `cat /proc/mdstat | grep "^md. : active" | sed -e 's/^md\(.\) :.*/\1/'`; do + echo $NUMBER + mdadm -D ${BASE}$NUMBER 2>/dev/null |grep UUID | sed 's/.*: \(.*\)/\1/' + done +} + +if [ "$1" = LIST ] ; then + echo `listpairs` + $UMNTDEVFS + exit 0 +fi + +DEVDIRESC=$(echo $DEVDIR | sed -e 's!/!\\/!g') +if [ "$AUTOCREATE" ] ; then + CREATECMD=$(sed -e "s/.*major.*//; s/.*\ \([:0-9:]\+\)\ \+\ \([:0-9:]\+\)\ \+\ [:0-9:]\+\ \+\([:a-z0-9\/:]\+\).*/mknod \3 b \1 \2 ; / ; s/\//_/g" < /proc/partitions) + export CREATECMD + export DEVDIR + # and we need array nodes, of course + ( + cd $DEVDIR ; + eval $CREATECMD ; + for x in 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 ; do + mknod ${BASE}$x b 9 $x + done + ) + PARTLIST=$(sed -e "s/.*major.*//; s/.*\ \([:0-9:]\+\)\ \+\ \([:0-9:]\+\)\ \+\ [:0-9:]\+\ \+\([:a-z0-9\/:]\+\).*/DEVDIR\3 /; s/\//_/g ; s/DEVDIR/$DEVDIRESC\//;" < /proc/partitions) +else + PARTLIST=$(sed -e "s/.*major.*//; s/^[:0-9 :]* \([:a-z:].[:a-z0-9\/:]*\).*/\1/; s/^\([:a-z:].*\)/$DEVDIRESC\/\1/g" < /proc/partitions) +fi + +for SRC in $PARTLIST $MORERAIDVOLUMES ; do + SUM=$(mdadm -E $SRC 2>/dev/null | grep UUID | sed 's/.*: \(.*\)/\1/') + for x in $SUM; do + UUIDS="$UUIDS $SUM" + setarr MDS $SUM "`arr MDS $SUM` $SRC" + done +done + +if [ "$#" -gt 1 ] ; then + NUMBER=${BASE}$1 + MD=$2 + shift ; shift + if [ "`arr MDS $MD`" != "started" ] ; then + mdadm -A -a yes $NUMBER -f `arr MDS $MD` && setarr MDS $MD "started" + # just to be sure + ln /dev/md/$NUMBER /dev/md$NUMBER 2>/dev/null + fi +fi + +# and process the rest, if it exists +# do not touch active arrays +#dropactive() { + for NUMBER in `cat /proc/mdstat | grep "^md. : active" | sed -e 's/^md\(.\) :.*/\1/'`; do + setarr MDS `mdadm -D ${BASE}$NUMBER 2>/dev/null |grep UUID | sed 's/.*: \(.*\)/\1/'` "started" + done +#} + + +for MD in $UUIDS; do + if [ "`arr MDS $MD`" != "started" ] ; then + NUMBER=`next_free_md` + mdadm -A -a yes $NUMBER -f `arr MDS $MD` && setarr MDS $MD "started" + # just to be sure + ln /dev/md/$NUMBER /dev/md$NUMBER 2>/dev/null + fi +done + +$UMNTDEVFS |