nutools/lib/backup.mount

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2013-08-27 15:14:44 +04:00
#!/bin/bash
# -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
BCKDIR="${1:-/backup}"
VGNAME="$2"
LVNAME="$3"
###############################################################################
# Ne pas modifier à partir d'ici
function die() {
[ -n "$*" ] && echo "$*"
exit 1
}
mountvg=
mount=
mountrw=
# Vérifier que le volume group est monté
if [ -n "$VGNAME" ]; then
# Vérifier la présence du volume group
found=
try=1
while [ "$try" -le 2 ]; do
VGNAMES=($(vgs --noheadings -o vg_name | sed 's/ //g'))
for vgname in "${VGNAMES[@]}"; do
if [ "$vgname" == "$VGNAME" ]; then
found=1
break
fi
done
if [ -n "$found" ]; then
break
else
vgscan >&/dev/null
try=$(($try + 1))
fi
done
[ -n "$found" ] || die "ERR volume group $VGNAME not found"
# Vérifier qu'il est monté
if [ ! -d "/dev/$VGNAME" ]; then
vgchange -ay "$VGNAME" >&/dev/null
mountvg=1
fi
[ -d "/dev/$VGNAME" ] || die "ERR directory /dev/$VGNAME not found"
fi
# Vérifier que le répertoire est monté
if [ ! -d "$BCKDIR" ]; then
mkdir "$BCKDIR" >&/dev/null || die "ERR cannot mkdir $BCKDIR"
fi
if ! mount | grep -q "on $BCKDIR "; then
if grep -q "$BCKDIR" /etc/fstab; then
mount "$BCKDIR" >&/dev/null || die "ERR cannot mount $BCKDIR"
mount=1
elif [ -n "$LVNAME" -a -n "$VGNAME" ]; then
mount "/dev/$VGNAME/$LVNAME" "$BCKDIR"
mount=1
fi
fi
# Vérifier que le répertoire est monté en lecture/écriture
if ! mount | grep "on $BCKDIR " | grep -q '(.*rw.*)'; then
mount -o remount,rw "$BCKDIR" >&/dev/null || die "ERR cannot remount $BCKDIR as R/W"
mountrw=1
fi
echo OK "$BCKDIR" "$VGNAME" "$LVNAME" ${mountvg:+ mounted_vg}${mount:+ mounted}${mountrw:+ mounted_rw}