vblade/debian/patches/cherry-pick.vblade-24-1-g02afd36.support-for-vblade-persistence.patch

Subject: RFC: Support for vblade persistence
Origin: vblade-24-1-g02afd36
Upstream-Author: Christoph Biedl <debian.axhn@manchmal.in-ulm.de>
Date: Sat Sep 1 18:27:04 2018 +0200

    Additionally, a typo fix

--- /dev/null
+++ b/contrib/persistence/vblade-generator
@@ -0,0 +1,37 @@
+#!/bin/sh
+
+set -eu
+
+SERVICEFILE="/lib/systemd/system/vblade@.service"
+WANTDIR="$1/vblade.service.wants"
+
+CONFIG_DIR=/etc/vblade.conf.d/
+
+if [ -d "$CONFIG_DIR" ] ; then
+    mkdir -p "$WANTDIR"
+    cd "$CONFIG_DIR"
+    for CONFIG in *.conf ; do
+        [ -f "$CONFIG" ] || continue
+        INSTANCE="$(systemd-escape "${CONFIG%%.conf}")"
+        LINK="$WANTDIR/vblade@$INSTANCE.service"
+
+        sh -n "$CONFIG_DIR$CONFIG" 2>/dev/null || continue
+
+        shelf=
+        slot=
+        netif=
+        filename=
+        options=
+
+        . "$CONFIG_DIR$CONFIG"
+
+        [ "$netif" ] || continue
+        [ "$shelf" ] || continue
+        [ "$slot" ] || continue
+        [ "$filename" ] || continue
+
+        ln -s "$SERVICEFILE" "$LINK"
+    done
+fi
+
+exit 0
--- /dev/null
+++ b/contrib/persistence/vblade-persistence.txt
@@ -0,0 +1,107 @@
+
+= VBLADE-PERSISTENCE(5)
+
+== NAME
+
+vblade-persistence - description of the vblade persistence
+
+== DESCRIPTION
+
+vblade-persistence uses the files in `/etc/vblade.conf.d/` to manage
+exports. File names must end in `.conf`. The "instance" name is the
+file name without `.conf`.
+
+The file format is a POSIX shell fragment.
+
+The following variables *must* be defined: `netif`, `shelf`, `slot`,
+and `filename`. See vblade(8) for their meaning. Incomplete
+configuration files are ignored, so are files that are not a valid
+shell syntax.
+
+Additionally, the following variables may be defined:
+
+* `options`
+
+Any options as provided by vblade(7).
+
+* `ionice`
+
+Use these to define an I/O scheduling class and level for that export.
+The value must be understood by ionice(1).
+
+
+== EXAMPLE
+
+----
+    shelf=14
+    slot=2
+    netif=ens3
+    filename=/dev/mapper/export
+    options='-r -m 11:22:33:44:55:66,22:33:44:55:66:77 -o 8'
+    ionice='--class best-effort --classdata 7'
+----
+
+
+== USAGE
+
+=== On systems using systemd
+
+Install `vblade-generator` in `/lib/systemd/system-generators/`, and
+both `vblade.service` and `vblade@.service` in `/lib/systemd/system/`.
+Enable the vblade service, reload systemd. Additional units for each
+export should appear, named `vblade@<instance>.service`.
+
+=== On systems using SysV init
+
+Individual instances may be controlled by providing their name as
+a second option, e.g.
+
+----
+    /etc/init.d/vblade status demo
+----
+
+Two different init scripts are available:
+
+==== `vblade.init.lsb-daemon`
+
+Uses LSB functions and daemon(1) program to control the instance.
+
+Pros: daemon(1) is a very fine tool for this, providing also respawning
+and output redirection.
+
+==== `vblade.init.daemon`
+
+As above, but without using LSB functions.
+
+Pros: Should be fairly portable, no thrills.
+
+==== Template
+
+The template for these scripts is `vblade.init.in`, the actual
+templating is done using tpage(1p), see `vblade.init.generate`.
+
+Support for using Debian's start-stop-daemon has been prepared but
+requires pid file supprt in vblade to be usable.
+
+
+== BUGS
+
+On SysV init systems, the configuration files are always sourced as
+shell scripts. On systemd systems, the configuration file is just
+a key/value store without shell expansion.
+
+It's a wise idea to run `sh -n` against a configuration file after any
+modification for basic format validation.
+
+
+== SEE ALSO
+
+daemon: <http://www.libslack.org/daemon/>
+
+tpage(1p)
+
+vblade(8)
+
+== AUTHOR
+
+Christoph Biedl <sourceforge.bnwi@manchmal.in-ulm.de>
--- /dev/null
+++ b/contrib/persistence/vblade.init.daemon
@@ -0,0 +1,191 @@
+#!/bin/sh
+
+PATH=/sbin:/usr/sbin:/bin:/usr/bin
+DESC="vblade export"
+NAME=vblade
+VBLADE="/usr/sbin/$NAME"
+DAEMON=/usr/bin/daemon
+IONICE=/usr/bin/ionice
+PIDDIR="/var/run/vblade/"
+
+[ -x "$VBLADE" ] || exit 0
+[ -x "$DAEMON" ] || exit 0
+
+mkdir -p "$PIDDIR"
+
+# Emulation of LSB functions
+VERBOSE=1
+log_daemon_msg () {
+    printf '%s ' "$@"
+}
+log_end_msg () {
+    local CODE="$1"
+    if [ "$CODE" -eq 0 ] ; then
+        echo '.'
+    else
+        echo 'failed!'
+    fi
+}
+
+# Start a vblade instance
+#
+# Return
+#   0 if daemon has been started
+#   1 if daemon was already running
+#   2 if daemon could not be started
+do_start () {
+    local INSTANCE="$1"
+    local CONFIG="$2"
+
+    sh -n "$CONFIG" 2>/dev/null || return 2
+
+    shelf=
+    slot=
+    filename=
+    netif=
+    options=
+    ionice=
+
+    . "$CONFIG"
+
+    [ "$netif" ] || return 2
+    [ "$shelf" ] || return 2
+    [ "$slot" ] || return 2
+    [ "$filename" ] || return 2
+
+    if [ "$ionice" ] ; then
+        if [ -x "$IONICE" ] ; then
+            ionice="$IONICE $ionice"
+        else
+            ionice=
+        fi
+    fi
+
+    "$DAEMON" \
+        --running \
+        --name "$INSTANCE" \
+        --pidfiles "$PIDDIR" \
+        && return 1
+    $ionice "$DAEMON" \
+        --respawn \
+        --name "$INSTANCE" \
+        --pidfiles "$PIDDIR" \
+        --output daemon.notice \
+        --stdout daemon.notice \
+        --stderr daemon.err -- \
+        $VBLADE $options $shelf $slot $netif $filename || return 2
+}
+
+# Stop a vblade instance
+#
+# Return
+#   0 if daemon has been stopped
+#   1 if daemon was already stopped
+#   2 if daemon could not be stopped
+#   other if a failure occurred
+do_stop () {
+    local INSTANCE="$1"
+
+    "$DAEMON" \
+        --running \
+        --name "$INSTANCE" \
+        --pidfiles "$PIDDIR" || return 1
+    "$DAEMON" \
+        --stop \
+        --name "$INSTANCE" \
+        --pidfiles "$PIDDIR" \
+        --stop || return 2
+    # Wait until the process is gone
+    for i in $(seq 1 10) ; do
+        "$DAEMON" \
+            --running \
+            --name "$INSTANCE" \
+            --pidfiles "$PIDDIR" || return 0
+    done
+    return 2
+}
+
+EXIT=0
+
+do_action () {
+    local CONFIG="$1"
+
+    INSTANCE="$(basename "${CONFIG%%.conf}")"
+
+    case "$ACTION" in
+        start)
+            [ "$VERBOSE" != no ] && log_daemon_msg "Starting $DESC" "$INSTANCE"
+            do_start "$INSTANCE" "$CONFIG"
+            case "$?" in
+                0|1)    [ "$VERBOSE" != no ] && log_end_msg 0 ;;
+                2)      [ "$VERBOSE" != no ] && log_end_msg 1 ;;
+            esac
+            ;;
+        stop)
+            [ "$VERBOSE" != no ] && log_daemon_msg "Stopping $DESC" "$INSTANCE"
+            do_stop "$INSTANCE"
+            case "$?" in
+                0|1)    [ "$VERBOSE" != no ] && log_end_msg 0 ;;
+                2)      [ "$VERBOSE" != no ] && log_end_msg 1 ;;
+            esac
+            ;;
+        status)
+            if "$DAEMON" \
+                --running \
+                --name "$INSTANCE" \
+                --pidfiles "$PIDDIR"
+            then
+                echo "$DESC instance $INSTANCE is running"
+            else
+                echo "$DESC instance $INSTANCE is not running"
+                EXIT=1
+            fi
+            ;;
+        restart|force-reload)
+            log_daemon_msg "Restarting $DESC" "$INSTANCE"
+            do_stop "$INSTANCE"
+            case "$?" in
+                0|1)
+                    do_start "$INSTANCE" "$CONFIG"
+                    case "$?" in
+                        0)  log_end_msg 0 ;;
+                        *)
+                            # Old process is still running or
+                            # failed to start
+                            log_end_msg 1 ;;
+                    esac
+                    ;;
+                *)
+                    # Failed to stop
+                    log_end_msg 1
+                    ;;
+                esac
+            ;;
+        *)
+            echo "Usage: /etc/init.d/vblade {start|stop|status|restart|force-reload} [<export> ...]" >&2
+            exit 3
+            ;;
+    esac
+}
+
+
+ACTION="$1"
+shift
+
+if [ "$1" ] ; then
+    while [ "$1" ] ; do
+        CONFIG="/etc/vblade.conf.d/$1.conf"
+        if [ -f "$CONFIG" ] ; then
+            do_action "$CONFIG"
+        fi
+        shift
+    done
+else
+    for CONFIG in /etc/vblade.conf.d/*.conf ; do
+        if [ -f "$CONFIG" ] ; then
+            do_action "$CONFIG"
+        fi
+    done
+fi
+
+exit $EXIT
--- /dev/null
+++ b/contrib/persistence/vblade.init.generate
@@ -0,0 +1,24 @@
+#!/bin/sh
+
+set -e
+
+TEMPDIR="$(mktemp --directory --tmpdir "vblade.init.generate.$$.XXXXX")"
+trap "cd / ; rm -rf \"$TEMPDIR\"" EXIT
+
+run () {
+    local OUTPUT="$1"
+    echo "I: Processing $OUTPUT"
+    TEMP="$TEMPDIR/$OUTPUT"
+    shift
+    tpage "$@" vblade.init.in>"$TEMP"
+    sh -n "$TEMP"
+    if [ -f "$OUTPUT" ] && cmp -s "$TEMP" "$OUTPUT" ; then
+        echo "I: $OUTPUT is fresh"
+    else
+        cp "$TEMP" "$OUTPUT"
+    fi
+}
+
+# run 'vblade.init.debian'        --define lsb=1  --define control=ssd
+run 'vblade.init.lsb-daemon'    --define lsb=1  --define control=daemon
+run 'vblade.init.daemon'        --define lsb=   --define control=daemon
--- /dev/null
+++ b/contrib/persistence/vblade.init.in
@@ -0,0 +1,245 @@
+#!/bin/sh
+
+[% IF lsb -%]
+### BEGIN INIT INFO
+# Provides:          vblade
+# Required-Start:    $remote_fs $syslog $network
+# Required-Stop:     $remote_fs $syslog $network
+# Default-Start:     2 3 4 5
+# Default-Stop:      0 1 6
+# Short-Description: vblade exports
+# Description:       Manage all vlbade exports defined in
+#                    /etc/vblade.conf.d/
+### END INIT INFO
+
+[% END -%]
+PATH=/sbin:/usr/sbin:/bin:/usr/bin
+DESC="vblade export"
+NAME=vblade
+VBLADE="/usr/sbin/$NAME"
+[% IF control == 'ssd' -%]
+[% PERL -%]die ('control=ssd cannot be used as  long as vblade as no pidfile support');[% END -%]
+[% ELSIF control == 'daemon' -%]
+DAEMON=/usr/bin/daemon
+[% END -%]
+IONICE=/usr/bin/ionice
+PIDDIR="/var/run/vblade/"
+
+[ -x "$VBLADE" ] || exit 0
+[% IF control == 'daemon' -%]
+[ -x "$DAEMON" ] || exit 0
+[% END -%]
+
+mkdir -p "$PIDDIR"
+
+[% IF lsb -%]
+# Load the VERBOSE setting and other rcS variables
+. /lib/init/vars.sh
+
+# Define LSB functions
+. /lib/lsb/init-functions
+[% ELSE -%]
+# Emulation of LSB functions
+VERBOSE=1
+log_daemon_msg () {
+    printf '%s ' "$@"
+}
+log_end_msg () {
+    local CODE="$1"
+    if [ "$CODE" -eq 0 ] ; then
+        echo '.'
+    else
+        echo 'failed!'
+    fi
+}
+[% END -%]
+
+# Start a vblade instance
+#
+# Return
+#   0 if daemon has been started
+#   1 if daemon was already running
+#   2 if daemon could not be started
+do_start () {
+    local INSTANCE="$1"
+    local CONFIG="$2"
+
+    sh -n "$CONFIG" 2>/dev/null || return 2
+
+    shelf=
+    slot=
+    filename=
+    netif=
+    options=
+    ionice=
+
+    . "$CONFIG"
+
+    [ "$netif" ] || return 2
+    [ "$shelf" ] || return 2
+    [ "$slot" ] || return 2
+    [ "$filename" ] || return 2
+
+    if [ "$ionice" ] ; then
+        if [ -x "$IONICE" ] ; then
+            ionice="$IONICE $ionice"
+        else
+            ionice=
+        fi
+    fi
+
+[% IF control == 'ssd' -%]
+    local PIDFILE="$PIDDIR/$INSTANCE.pid"
+    start-stop-daemon --start --quiet \
+        --pidfile "$PIDFILE" --exec "$VBLADE" --test > /dev/null \
+        || return 1
+    start-stop-daemon --start --quiet \
+        --pidfile "$PIDFILE" \
+        --exec $ionice "$VBLADE" -- \
+        $shelf $slot $netif $filename $options \
+        || return 2
+[% ELSIF control == 'daemon' -%]
+    "$DAEMON" \
+        --running \
+        --name "$INSTANCE" \
+        --pidfiles "$PIDDIR" \
+        && return 1
+    $ionice "$DAEMON" \
+        --respawn \
+        --name "$INSTANCE" \
+        --pidfiles "$PIDDIR" \
+        --output daemon.notice \
+        --stdout daemon.notice \
+        --stderr daemon.err -- \
+        $VBLADE $options $shelf $slot $netif $filename || return 2
+[% END -%]
+}
+
+# Stop a vblade instance
+#
+# Return
+#   0 if daemon has been stopped
+#   1 if daemon was already stopped
+#   2 if daemon could not be stopped
+#   other if a failure occurred
+do_stop () {
+    local INSTANCE="$1"
+
+[% IF control == 'ssd' -%]
+    local PIDFILE="$PIDDIR/$INSTANCE.pid"
+    start-stop-daemon --stop --quiet \
+        --retry=TERM/30/KILL/5 --pidfile "$PIDFILE" --name "$NAME"
+    RETVAL="$?"
+    [ "$RETVAL" = 2 ] && return 2
+    # Many daemons don't delete their pidfiles when they exit.
+    rm -f "$PIDFILE"
+    return "$RETVAL"
+[% ELSIF control == 'daemon' -%]
+    "$DAEMON" \
+        --running \
+        --name "$INSTANCE" \
+        --pidfiles "$PIDDIR" || return 1
+    "$DAEMON" \
+        --stop \
+        --name "$INSTANCE" \
+        --pidfiles "$PIDDIR" \
+        --stop || return 2
+    # Wait until the process is gone
+    for i in $(seq 1 10) ; do
+        "$DAEMON" \
+            --running \
+            --name "$INSTANCE" \
+            --pidfiles "$PIDDIR" || return 0
+    done
+    return 2
+[% END -%]
+}
+
+EXIT=0
+
+do_action () {
+    local CONFIG="$1"
+
+    INSTANCE="$(basename "${CONFIG%%.conf}")"
+
+    case "$ACTION" in
+        start)
+            [ "$VERBOSE" != no ] && log_daemon_msg "Starting $DESC" "$INSTANCE"
+            do_start "$INSTANCE" "$CONFIG"
+            case "$?" in
+                0|1)    [ "$VERBOSE" != no ] && log_end_msg 0 ;;
+                2)      [ "$VERBOSE" != no ] && log_end_msg 1 ;;
+            esac
+            ;;
+        stop)
+            [ "$VERBOSE" != no ] && log_daemon_msg "Stopping $DESC" "$INSTANCE"
+            do_stop "$INSTANCE"
+            case "$?" in
+                0|1)    [ "$VERBOSE" != no ] && log_end_msg 0 ;;
+                2)      [ "$VERBOSE" != no ] && log_end_msg 1 ;;
+            esac
+            ;;
+        status)
+[% IF lsb -%]
+            status_of_proc -p "$PIDDIR/$INSTANCE.pid" "$VBLADE" "vblade instance $INSTANCE" || EXIT=$?
+[% ELSE -%]
+            if "$DAEMON" \
+                --running \
+                --name "$INSTANCE" \
+                --pidfiles "$PIDDIR"
+            then
+                echo "$DESC instance $INSTANCE is running"
+            else
+                echo "$DESC instance $INSTANCE is not running"
+                EXIT=1
+            fi
+[% END -%]
+            ;;
+        restart|force-reload)
+            log_daemon_msg "Restarting $DESC" "$INSTANCE"
+            do_stop "$INSTANCE"
+            case "$?" in
+                0|1)
+                    do_start "$INSTANCE" "$CONFIG"
+                    case "$?" in
+                        0)  log_end_msg 0 ;;
+                        *)
+                            # Old process is still running or
+                            # failed to start
+                            log_end_msg 1 ;;
+                    esac
+                    ;;
+                *)
+                    # Failed to stop
+                    log_end_msg 1
+                    ;;
+                esac
+            ;;
+        *)
+            echo "Usage: /etc/init.d/vblade {start|stop|status|restart|force-reload} [<export> ...]" >&2
+            exit 3
+            ;;
+    esac
+}
+
+
+ACTION="$1"
+shift
+
+if [ "$1" ] ; then
+    while [ "$1" ] ; do
+        CONFIG="/etc/vblade.conf.d/$1.conf"
+        if [ -f "$CONFIG" ] ; then
+            do_action "$CONFIG"
+        fi
+        shift
+    done
+else
+    for CONFIG in /etc/vblade.conf.d/*.conf ; do
+        if [ -f "$CONFIG" ] ; then
+            do_action "$CONFIG"
+        fi
+    done
+fi
+
+exit $EXIT
--- /dev/null
+++ b/contrib/persistence/vblade.init.lsb-daemon
@@ -0,0 +1,185 @@
+#!/bin/sh
+
+### BEGIN INIT INFO
+# Provides:          vblade
+# Required-Start:    $remote_fs $syslog $network
+# Required-Stop:     $remote_fs $syslog $network
+# Default-Start:     2 3 4 5
+# Default-Stop:      0 1 6
+# Short-Description: vblade exports
+# Description:       Manage all vblade exports defined in
+#                    /etc/vblade.conf.d/
+### END INIT INFO
+
+PATH=/sbin:/usr/sbin:/bin:/usr/bin
+DESC="vblade export"
+NAME=vblade
+VBLADE="/usr/sbin/$NAME"
+DAEMON=/usr/bin/daemon
+IONICE=/usr/bin/ionice
+PIDDIR="/var/run/vblade/"
+
+[ -x "$VBLADE" ] || exit 0
+[ -x "$DAEMON" ] || exit 0
+
+mkdir -p "$PIDDIR"
+
+# Load the VERBOSE setting and other rcS variables
+. /lib/init/vars.sh
+
+# Define LSB functions
+. /lib/lsb/init-functions
+
+# Start a vblade instance
+#
+# Return
+#   0 if daemon has been started
+#   1 if daemon was already running
+#   2 if daemon could not be started
+do_start () {
+    local INSTANCE="$1"
+    local CONFIG="$2"
+
+    sh -n "$CONFIG" 2>/dev/null || return 2
+
+    shelf=
+    slot=
+    filename=
+    netif=
+    options=
+    ionice=
+
+    . "$CONFIG"
+
+    [ "$netif" ] || return 2
+    [ "$shelf" ] || return 2
+    [ "$slot" ] || return 2
+    [ "$filename" ] || return 2
+
+    if [ "$ionice" ] ; then
+        if [ -x "$IONICE" ] ; then
+            ionice="$IONICE $ionice"
+        else
+            ionice=
+        fi
+    fi
+
+    "$DAEMON" \
+        --running \
+        --name "$INSTANCE" \
+        --pidfiles "$PIDDIR" \
+        && return 1
+    $ionice "$DAEMON" \
+        --respawn \
+        --name "$INSTANCE" \
+        --pidfiles "$PIDDIR" \
+        --output daemon.notice \
+        --stdout daemon.notice \
+        --stderr daemon.err -- \
+        $VBLADE $options $shelf $slot $netif $filename || return 2
+}
+
+# Stop a vblade instance
+#
+# Return
+#   0 if daemon has been stopped
+#   1 if daemon was already stopped
+#   2 if daemon could not be stopped
+#   other if a failure occurred
+do_stop () {
+    local INSTANCE="$1"
+
+    "$DAEMON" \
+        --running \
+        --name "$INSTANCE" \
+        --pidfiles "$PIDDIR" || return 1
+    "$DAEMON" \
+        --stop \
+        --name "$INSTANCE" \
+        --pidfiles "$PIDDIR" \
+        --stop || return 2
+    # Wait until the process is gone
+    for i in $(seq 1 10) ; do
+        "$DAEMON" \
+            --running \
+            --name "$INSTANCE" \
+            --pidfiles "$PIDDIR" || return 0
+    done
+    return 2
+}
+
+EXIT=0
+
+do_action () {
+    local CONFIG="$1"
+
+    INSTANCE="$(basename "${CONFIG%%.conf}")"
+
+    case "$ACTION" in
+        start)
+            [ "$VERBOSE" != no ] && log_daemon_msg "Starting $DESC" "$INSTANCE"
+            do_start "$INSTANCE" "$CONFIG"
+            case "$?" in
+                0|1)    [ "$VERBOSE" != no ] && log_end_msg 0 ;;
+                2)      [ "$VERBOSE" != no ] && log_end_msg 1 ;;
+            esac
+            ;;
+        stop)
+            [ "$VERBOSE" != no ] && log_daemon_msg "Stopping $DESC" "$INSTANCE"
+            do_stop "$INSTANCE"
+            case "$?" in
+                0|1)    [ "$VERBOSE" != no ] && log_end_msg 0 ;;
+                2)      [ "$VERBOSE" != no ] && log_end_msg 1 ;;
+            esac
+            ;;
+        status)
+            status_of_proc -p "$PIDDIR/$INSTANCE.pid" "$VBLADE" "vblade instance $INSTANCE" || EXIT=$?
+            ;;
+        restart|force-reload)
+            log_daemon_msg "Restarting $DESC" "$INSTANCE"
+            do_stop "$INSTANCE"
+            case "$?" in
+                0|1)
+                    do_start "$INSTANCE" "$CONFIG"
+                    case "$?" in
+                        0)  log_end_msg 0 ;;
+                        *)
+                            # Old process is still running or
+                            # failed to start
+                            log_end_msg 1 ;;
+                    esac
+                    ;;
+                *)
+                    # Failed to stop
+                    log_end_msg 1
+                    ;;
+                esac
+            ;;
+        *)
+            echo "Usage: /etc/init.d/vblade {start|stop|status|restart|force-reload} [<export> ...]" >&2
+            exit 3
+            ;;
+    esac
+}
+
+
+ACTION="$1"
+shift
+
+if [ "$1" ] ; then
+    while [ "$1" ] ; do
+        CONFIG="/etc/vblade.conf.d/$1.conf"
+        if [ -f "$CONFIG" ] ; then
+            do_action "$CONFIG"
+        fi
+        shift
+    done
+else
+    for CONFIG in /etc/vblade.conf.d/*.conf ; do
+        if [ -f "$CONFIG" ] ; then
+            do_action "$CONFIG"
+        fi
+    done
+fi
+
+exit $EXIT
--- /dev/null
+++ b/contrib/persistence/vblade.service
@@ -0,0 +1,13 @@
+[Unit]
+Description=vblade exports
+Documentation=man:vblade-persistence(5)
+Documentation=man:vblade(8)
+
+[Service]
+Type=oneshot
+ExecStart=/bin/true
+ExecReload=/bin/true
+RemainAfterExit=on
+
+[Install]
+WantedBy=multi-user.target
--- /dev/null
+++ b/contrib/persistence/vblade@.service
@@ -0,0 +1,18 @@
+[Unit]
+Description=vblade instance %I
+SourcePath=/etc/vblade.conf.d/%I.conf
+Documentation=man:vblade(8)
+PartOf=vblade.service
+After=rc-local.service
+
+[Service]
+Type=simple
+Environment="ionice=-c2 -n7"
+EnvironmentFile=/etc/vblade.conf.d/%I.conf
+ExecStart=/usr/bin/ionice $ionice /usr/sbin/vblade $shelf $slot $netif $filename $options
+SyslogIdentifier=vblade
+Restart=always
+RestartSec=10
+
+[Install]
+WantedBy=multi-user.target