ceph/src/rbdmap
Boris Ranto c0980af3c7 rbdmap: Move do_map and do_unmap shell functions to rbdmap script
This patch creates rbdmap shell script that is called from init-rbdmap
init script. The patch also renames src/rbdmap configuration file to
src/etc-rbdmap so that rbdmap shell script can be installed via build
system directly. Finally, the patch accomodates these changes in spec
file and build system.

Fixes: #13374
Signed-off-by: Boris Ranto <branto@redhat.com>
2015-11-05 21:04:50 +01:00

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#!/bin/sh
do_map() {
if [ ! -f "$RBDMAPFILE" ]; then
logger -p "daemon.warning" -t init-rbdmap "No $RBDMAPFILE found."
exit 0
fi
# Read /etc/rbdtab to create non-existant mapping
RET=0
while read DEV PARAMS; do
case "$DEV" in
""|\#*)
continue
;;
*/*)
;;
*)
DEV=rbd/$DEV
;;
esac
logger -p "daemon.debug" -t init-rbdmap "Mapping '${DEV}'"
newrbd=""
MAP_RV=""
OIFS=$IFS
IFS=','
CMDPARAMS=""
for PARAM in ${PARAMS[@]}; do
CMDPARAMS="$CMDPARAMS --$(echo $PARAM | tr '=' ' ')"
done
IFS=$OIFS
if [ -b /dev/rbd/$DEV ]; then
MAP_RV="$(readlink -f /dev/rbd/$DEV)"
else
MAP_RV="$(rbd map $DEV $CMDPARAMS 2>&1)"
if [ $? -eq 0 ]; then
newrbd="yes"
else
RET=$((${RET}+$?))
logger -p "daemon.warning" -t init-rbdmap "Failed to map '${DEV}"
continue
fi
fi
logger -p "daemon.debug" -t init-rbdmap "Mapped '${DEV}' to '${MAP_RV}'"
if [ "$newrbd" ]; then
## Mount new rbd
MNT_RV=""
mount --fake /dev/rbd/$DEV >>/dev/null 2>&1 \
&& MNT_RV=$(mount -vn /dev/rbd/$DEV 2>&1)
[ -n "${MNT_RV}" ] && logger -p "daemon.debug" -t init-rbdmap "Mounted '${MAP_RV}' to '${MNT_RV}'"
## post-mapping
if [ -x "/etc/ceph/rbd.d/${DEV}" ]; then
logger -p "daemon.debug" -t init-rbdmap "Running post-map hook '/etc/ceph/rbd.d/${DEV}'"
/etc/ceph/rbd.d/${DEV} map "/dev/rbd/${DEV}"
fi
fi
done < $RBDMAPFILE
exit ${RET}
}
do_unmap() {
RET=0
## Unmount and unmap all rbd devices
if ls /dev/rbd[0-9]* >/dev/null 2>&1; then
for DEV in /dev/rbd[0-9]*; do
## pre-unmapping
for L in $(find /dev/rbd -type l); do
LL="${L##/dev/rbd/}"
if [ "$(readlink -f $L)" = "${DEV}" ] \
&& [ -x "/etc/ceph/rbd.d/${LL}" ]; then
logger -p "daemon.debug" -t init-rbdmap "Running pre-unmap hook for '${DEV}': '/etc/ceph/rbd.d/${LL}'"
/etc/ceph/rbd.d/${LL} unmap "$L"
break
fi
done
logger -p "daemon.debug" -t init-rbdmap "Unmapping '${DEV}'"
MNT=$(findmnt --mtab --source ${DEV} --noheadings | awk '{print $1'})
if [ -n "${MNT}" ]; then
logger -p "daemon.debug" -t init-rbdmap "Unmounting '${MNT}'"
umount "${MNT}" >>/dev/null 2>&1
fi
if mountpoint -q "${MNT}"; then
## Un-mounting failed.
logger -p "daemon.warning" -t init-rbdmap "Failed to unmount '${MNT}'"
RET=$((${RET}+1))
continue
fi
## Un-mapping.
rbd unmap $DEV >>/dev/null 2>&1
if [ $? -ne 0 ]; then
logger -p "daemon.warning" -t init-rbdmap "Failed to unmap '${MNT}'"
RET=$((${RET}+$?))
continue
fi
logger -p "daemon.debug" -t init-rbdmap "Unmapped '${DEV}'"
done
fi
exit ${RET}
}
case "$1" in
map)
do_map
;;
unmap)
do_unmap
;;
*)
echo "Usage: rbdmap map | unmap"
esac