source: trunk/packages/invirt-xen-config/debian/invirt-xen-config.init @ 1471

Last change on this file since 1471 was 1471, checked in by price, 15 years ago

simplify some shell code

  • Property svn:executable set to *
File size: 2.2 KB
Line 
1#!/bin/bash
2### BEGIN INIT INFO
3# Provides:          invirt-xen-config
4# Required-Start:    $local_fs $remote_fs
5# Required-Stop:     $local_fs $remote_fs
6# Default-Start:     2 3 4 5
7# Default-Stop:      0 1 6
8# Short-Description: Startup script for the Invirt Xen host
9# Description:       
10### END INIT INFO
11
12PACKAGE=invirt-xen-config
13NAME="$PACKAGE"
14DESC="Invirt Xen host"
15PARENTPACKAGE=xend
16SYSVMS=(s_master s_remote s_console)
17GEN_FILES=(/etc/xen/xend-config.sxp.invirt "${SYSVMS[@]/#//etc/xen/sysvms/}")
18
19dpkg -s "$PACKAGE" >/dev/null 2>/dev/null || exit 0
20
21. /lib/init/gen-files.sh
22. /lib/init/std-init.sh
23
24start_sysvm() {
25    # Attempt to start a sysvm, but only if it's not running already
26    # somewhere on the cluster
27   
28    VM="$1"
29    DISK="/dev/xenvg/${VM}_hda"
30   
31    # Don't bother trying to start the VM if it's already running
32    if xm list "$1" >/dev/null 2>&1; then
33        return 1
34    fi
35   
36    if lvchange -a n "$DISK" >/dev/null 2>&1 && lvchange -a ey "$DISK" >/dev/null 2>&1; then
37        # If we can disable and then re-enable the VMs disk, then the
38        # VM can't be running. If the lvchange -a ey succeeds, then we
39        # have an exclusive lock across the cluster on enabling the
40        # disk, which avoids the potential race condition of two hosts
41        # starting a VM at the same time
42        [ "$VERBOSE" != no ] && log_daemon_msg "Starting sysvm $VM"
43        xm create "sysvms/$VM" >/dev/null
44        [ "$VERBOSE" != no ] && log_end_msg $?
45        RET=0
46    else
47        RET=1
48    fi
49   
50    # Regardless of whether we could get the lock or not, the
51    # lvchange -a n probably disabled the LV somewhere; be sure we
52    # clean up
53    lvchange -a y "$DISK" >/dev/null 2>&1
54   
55    return $RET
56}
57
58do_startup() {
59    gen_files
60   
61    for vm in "${SYSVMS[@]}"; do
62        start_sysvm "$vm"
63    done
64   
65    echo 1 >/proc/sys/net/ipv4/ip_forward
66    for i in all default; do
67        echo 1 >/proc/sys/net/ipv4/conf/$i/rp_filter
68        echo 1 >/proc/sys/net/ipv4/conf/$i/proxy_arp
69    done
70   
71    invoke-rc.d "$PARENTPACKAGE" "$1"
72}
73
74do_start() {
75    do_startup "start"
76}
77
78do_reload() {
79    do_startup "reload"
80}
81
82do_stop() {
83    invoke-rc.d "$PARENTPACKAGE" stop
84}
85
86std_init "$1"
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