Hi Laurent,
I opened a github pull request for this at
https://github.com/ceph/ceph/pull/378
We might consider putting /etc/rbdmap in /etc/ceph/rbdmap to avoid
polluting /etc... Dan, can you take a look?
Thanks!
sage
On Fri, 21 Jun 2013, Laurent Barbe wrote:
> Init script for mapping/unmapping rbd device on startup and shutdown.
> On start, map rbd dev according to /etc/rbdmap, and force mount -a
> On stop, umount file system depending on rbd and unmap all rbd
> Since some distribution use symlink for /etc/mtab, the user-space attribute
> _netdev is not enough to umount file system before rbd dev.
> (also concern: #1790)
>
> Signed-off-by: Laurent Barbe <[email protected]>
> ---
> src/init-rbdmap | 103
> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
> src/rbdmap | 3 ++
> 2 files changed, 106 insertions(+)
> create mode 100755 src/init-rbdmap
> create mode 100644 src/rbdmap
>
> diff --git a/src/init-rbdmap b/src/init-rbdmap
> new file mode 100755
> index 0000000..a2187ce
> --- /dev/null
> +++ b/src/init-rbdmap
> @@ -0,0 +1,103 @@
> +#!/bin/bash
> +
> +### BEGIN INIT INFO
> +# Provides: rbdmap
> +# Required-Start: $network
> +# Required-Stop: $network
> +# Default-Start: 2 3 4 5
> +# Default-Stop: 0 1 6
> +# Short-Description: Ceph RBD Mapping
> +# Description: Ceph RBD Mapping
> +### END INIT INFO
> +
> +DESC="RBD Mapping"
> +RBDMAPFILE="/etc/rbdmap"
> +
> +. /lib/lsb/init-functions
> +
> +do_map() {
> + if [ ! -f "$RBDMAPFILE" ]; then
> + log_warning_msg "$DESC : No $RBDMAPFILE found."
> + exit 0
> + fi
> +
> + log_daemon_msg "Starting $DESC"
> + # Read /etc/rbdtab to create non-existant mapping
> + newrbd=
> + RET=0
> + while read DEV PARAMS; do
> + case "$DEV" in
> + ""|\#*)
> + continue
> + ;;
> + */*)
> + ;;
> + *)
> + DEV=rbd/$DEV
> + ;;
> + esac
> + OIFS=$IFS
> + IFS=','
> + for PARAM in ${PARAMS[@]}; do
> + CMDPARAMS="$CMDPARAMS --$(echo $PARAM | tr '=' ' ')"
> + done
> + IFS=$OIFS
> + if [ ! -b /dev/rbd/$DEV ]; then
> + log_progress_msg $DEV
> + rbd map $DEV $CMDPARAMS
> + [ $? -ne "0" ] && RET=1
> + newrbd="yes"
> + fi
> + done < $RBDMAPFILE
> + log_end_msg $RET
> +
> + # Mount new rbd
> + if [ "$newrbd" ]; then
> + log_action_begin_msg "Mounting all filesystems"
> + mount -a
> + log_action_end_msg $?
> + fi
> +}
> +
> +do_unmap() {
> + log_daemon_msg "Stopping $DESC"
> + RET=0
> + # Unmap all rbd device
> + for DEV in /dev/rbd[0-9]*; do
> + log_progress_msg $DEV
> + # Umount before unmap
> + MNTDEP=$(findmnt --mtab --source $DEV --output TARGET | sed
> 1,1d | sort -r)
> + for MNT in $MNTDEP; do
> + umount $MNT || sleep 1 && umount -l $DEV
> + done
> + rbd unmap $DEV
> + [ $? -ne "0" ] && RET=1
> + done
> + log_end_msg $RET
> +}
> +
> +
> +case "$1" in
> + start)
> + do_map
> + ;;
> +
> + stop)
> + do_unmap
> + ;;
> +
> + reload)
> + do_map
> + ;;
> +
> + status)
> + rbd showmapped
> + ;;
> +
> + *)
> + log_success_msg "Usage: rbdmap {start|stop|reload|status}"
> + exit 1
> + ;;
> +esac
> +
> +exit 0
> diff --git a/src/rbdmap b/src/rbdmap
> new file mode 100644
> index 0000000..9d34e9e
> --- /dev/null
> +++ b/src/rbdmap
> @@ -0,0 +1,3 @@
> +# RbdDevice Parameters
> +#rbd/rbddevice id=client,keyring=/etc/ceph/ceph.client.keyring
> +
> --
> 1.8.1.2
>
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